Price : Rs.10,000/- (Rupees Ten Thousand only) (Non refundable)...
Transcript of Price : Rs.10,000/- (Rupees Ten Thousand only) (Non refundable)...
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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CITY & INDUSTRIAL DEVELOPMENT CORPORATION OF
MAHARASHTRA LIMITED
Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB
at Dronagiri.
C.A. No. : 06/CIDCO/EE(DRON-I)/2011-12
Due On : 29/05/2012 to 30/05/2012 on website
cidco.maharashtra.etenders.in
Price : Rs.10,000/- (Rupees Ten Thousand only)
(Non refundable)
OFFICE
THE CHIEF ENGINEER & GENERAL MANAGER (TECH)
CIDCO OF MAHARASHTRA LIMITED,
3RD FLOOR, CIDCO BHAVAN,
CBD-BELAPUR, NAVI MUMBAI.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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Name of Work : Construction / Upgradation of 36 M. wide road (one carriageway) leading to coastal road Dronagiri, Navi Mumbai. (upto 1st stage)
INDEX Sr. No.
Description Sl. Pg. No.
1. Index 1 2
2. Tender Notice 3 7
3. Tendering Programme 8 8
4. Notice of Tender & Instructions to the Tenderers 9 18
5. Undertaking for Submission of Tender 19 22
6. Special Conditions of Contract 23 31
7. Proforma of :
a) Contract Agreement 32 35
b) Bank Guarantee in Lieu of Contract Deposit 36 39
c) Indenture Bond 40 44
d) Promissory Note 45 45
e) Indemnity Bond 46 47
f) Bank Guarantee in Lieu of E.M.D. 48 51
g) Affidavit for Preservation of Mangroves 52 53
h) Agreeing to General Conditions of Contract 54 54
8. General Conditions of Contract 55 170
9. Notes & Preambles to Schedule of Rates & Quantities (Schedule “A”)
171 176
10. Schedule “A” (Bill of Quantities) 177 201
11. Annexure “A” 202 203
12. Schedule “B” 204 204
13. General Specifications 205 205
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Sr. No.
Description Sl. Pg. No.
14. Particular Specifications 206 328
15. Checklist for Ready Mix Concrete 329 335
16. Annexure-I 336 337
17. List of Approved Makes / Brands of Materials 338 338
18. List of Drawings 339 339
19. Drawings 340 345
20. Corrigendum if any --
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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TENDER NOTICE TENDER NOTICE PUBLISHED IN DAILY MARATHI NEWSPAPER
“Vartahar, Pudhari & Punya Nagari ” DATED : 28 March, 2012.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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TTEENNDDEERR NNOOTTIICCEE (WORKS WITH ESTIMATED COST FROM `.1.50 Crs. UPTO `s.15 Crs.)
CIDCO of Maharashtra Limited through the process of e-tendering invites “ON
LINE” item rate percentage tenders from the reputed experienced prospective
bidders, registered with CIDCO Ltd., Maharashtra State PWD, CPWD, MJP, MIDC,
MCGM in appropriate class, who have completed work of similar nature for the
work mentioned below:
Sr. No.
Description Details
1. Name of Work Realignment of 36.0 M wide road in Sector-5,
near existing ROB at Dronagiri.
2. C.A.No. 06/CIDCO/EE(DRON-I)/2011-12
3. Estimated Cost
(` in Lacs) `. 4,93,83,674.90
4. EMD `. 4,94,000.00
5. Registration Class Class II & above
6. Completion Period 12 Months (including monsoon)
7. Cost of Blank Tender
document `. 10,000.00 (Non-Refundable)
ELIGIBILITY CRITERIA:
1) Pre-qualification “On-Line” submission shall be accompanied by attested copies of
a) Valid Registration Certificate
b) Sales Tax Certificate (MVAT)
c) Income Tax Permanent Account Number
2) Experience of having successfully completed works during the last 5(Five)
years ending last day of the month previous to the one in which applications are invited:
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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(a) One similar completed work of costing not less than the amount equal
to 50% of the estimated cost;
OR
(b) Two best similar completed works adding to a total cost of minimum
80% of the estimated cost of proposed work;
OR
(c) Three best similar completed works adding to a total cost of minimum
90% of the estimated cost of proposed work.
3) Joint Venture/Consortium are not permitted.
4) FINANCIAL CRITERIA: The Prospective Bidders will be qualified only if they have minimum financial capabilities as below:-
i) Working Capital (Current Assets – Current Liabilities): Working
Capital (Net Cash Flow) of the Prospective Bidders during last audited financial years should be greater than `. 1.25 Crore
ii) Profitability: Profit after Tax should be Positive FOR “Two Years ”out of
last three consecutive financial years: such that it should be positive for immediate last financial year and one year out of two previous years.
iii) Net Worth: Net worth of Prospective Bidder during last audited
financial year should be greater than `. 0.50 Crores or 10% of cost of work.
5) Average Annual Turnover: The average annual turnover of last three
financial years should be equal to or greater than `. 3.71 Crores or 75% of annualized cost of the work.
Note:
I) Turn over will be considered for main bidder and not for the Group
Company or Subsidiary Company for all members of consortium put together.
ii) The value of works shall be brought to current costing level by
enhancing the executed value of work at simple rate of 7% per annum
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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6) BID CAPACITY CRITERIA:
The Prospective Bidder will be qualified only if their available bid capacity is
more than the Estimated Cost of the work as per notice inviting Tender. The available bid capacity will be calculated base on the following formula:
Available Bid capacity= 2 x A x N - B
where,
A= Average Annual Turn Over for last Three financial years.
N= No. of years prescribed for Completion of the work.
B= Value of existing commitments and on going works to be completed
during the period of Completion of work
NOTES :
1) For Pre-qualification on-line submission shall be accompanied by attested
copies of Registration, valid Bank solvency certificate, sales tax certificate
(MVAT), Income Tax Permanent Account No., list of technical staff, list of
works & it’s magnitude, executed in last Five years along with work completion certificates, list of works in hand.
The applicant should also produce original documents for verification if
called for. Failure to attach necessary documents with application will render
applicant ineligible for purchase / downloading of blank tender without any intimation.
2) Tender documents shall neither be sent nor received by post/courier.
3) Right to issue tender documents is reserved with CIDCO. CIDCO reserves
right to reject any or all tenders without assigning any reason and the same
shall be at the entire discretion of CIDCO. CIDCO’s decision in this respect shall be final and binding.
4) Conditional tenders shall be summarily rejected.
5) The offer shall remain valid for a period of one hundred twenty (120) days from the date of submission of tender.
6) The agencies eligible on the basis of CIDCO’s registration & having fixed
EMD with CIDCO will have to enclose the valid EMD exemption certificate in
appropriate amount issued by CIDCO. In case the agency who have fixed
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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EMD for an amount less than required EMD, will have to pay the balance
amount of EMD. In remaining cases the eligible contractor has to pay full EMD, as prescribed in the Tender Document.
7) Tender price money of Rs. 10,000/- (non-refundable) will be accepted by
Demand Draft only, drawn in favour of “CIDCO LTD”, payable at Navi
Mumbai and copy of the receipt shall be uploaded before purchase of tender.
8) For further details regarding the above, contact Executive Engineer (DRON-I), CIDCO Ltd., CIDCO Nodal Office, Sector –14, Bokadvira, Navi Mumbai-400702, Tel. No. : 022-2722 0282.
The queries from the perspective bidders should be submitted on this e-mail [email protected].
9) For any details regarding e-Tendering system in CIDCO, please contact
service provider M/s. Sify NexTenders (India) Pvt. Ltd., Yuchit, Juhu Tara
Road, Mumbai- 400 049, Tele. No.: 022-2661 1117 or Mob. No.: 9819139090,987020952, 9867804847, website – www.nextenders.com.
10) Tenderers are required to pay charges to the service provider M/s. Sify Nex
Tenders (India) Pvt. Ltd., for uploading the prequalification documents and also for uploading the main tender documents if prequalified, etc.
Chief Engineer & General Manager(Tech.)
CIDCO Ltd.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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TENDERING PROGRAMME Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB at
Dronagiri.
Seq No
CIDCO Stage Vendor Stage Start Date & Time Expiry Date & Time
1 Release Document 28/03/2012 10:00 28/03/2012 17:00 2 Purchase Document 28/03/2012 17:01 16/04/2012 17:00 3 Download, & Prepare
complete Document for Handover
28/03/2012 17:01 16/04/2012 17:00
4 Close New Entries 16/04/2012 17:01 20/04/2012 13:00 5 Handover online the
Prepared Documents 20/04/2012 13:01 27/04/2012 15:00
6 Pre qual Opening & Short listing of Tenders
27/04/2012 15:01 04/05/2012 18:00
7 Main Tender Preparation
04/05/2012 18:01 10/05/2012 17:00
8 Main Tender Document Purchase
10/05/2012 17:01 15/05/2012 17:00
Last date of receipt of Queries from agency
18/05/2012 17:00
Closing of Reply to Queries
23/05/2012 17:00
9 Complete Bid Preparation for Handover
23/05/2012 17:01 29/05/2012 17:00
10 Main Tender Schedule A Document & Online Bid
23/05/2012 17:01 29/05/2012 17:00
11 Close New Entries 29/05/2012 17:01 30/05/2012 13:00 12 Handover the Prepared
Documents 30/05/2012 13:01 05/06/2012 15:00
13 Opening & scrutiny Original Documents
05/06/2012 15:01 07/06/2012 17:00
14 Financial Bid Opening 07/06/2012 17:01 08/06/2012 15:00
NOTE : 1) Submission of original Demand Draft towards cost of tender document, original EMD
documents (Demand Draft / Bank Guarantee) and undertaking for submission of tender on 04.06.2012 during office hours in the office of Executive Engineer (DRON-I), CIDCO Ltd., CIDCO Nodal Office, Sector –14, Bokadvira, Navi Mumbai-400 702.
2) Tenderer may attend financial bid opening as mentioned above. No separate intimation will be given regarding tender opening.
Chief Engineer & General Manager(Tech.) CIDCO LTD.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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NOTICE OF TENDER AND INSTRUCTIONS TO TENDERERS
Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB at Dronagiri.
1.0 TENDER DOCUMENTS
The tender should attach scanned copies of attested documents in PDF
format for “ON-LINE” submission.
2.0 DOWNLOAD OF BLANK TENDER FORM
Contractors intending to download tender for the work shall first get
pre-qualified for the work by applying ON-LINE for prequalification
and attached all relevant documents required by the Employer. Only
those contractors short listed / pre-qualified shall be able to download
the tender document. The right to decide whether a contractor/firm
fulfils the requirements for download tender forms, rests entirely with
the Tender issuing authority of the Employer.
3.0 EARNEST MONEY
The tenderer shall deposit and keep deposited (for the period specified
hereafter) with CIDCO a sum as shown in this tender notice as the
Earnest money. The Earnest Money shall be deposited in one of the
following forms.
(i) By Demand Draft in favour of CIDCO Limited payable at Mumbai.
(ii) By an irrevocable and unconditional Bank Guarantee executed by a
Nationalised/Scheduled Bank approved by CIDCO located either in
Mumbai or in Navi Mumbai in the form prescribed and valid for 180
days from the last date prescribed for submission of tender.
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E.M.D. in form of irrevocable, unconditional Bank Guarantee will be
accepted only if, E.M.D. amount payable is equal or more than
Rs. 1.00 Lac in the cases where Estimated Cost put to Tender is equal or
more than Rs. 100.00 Lacs.
FIXED EMD : The agencies who are eligible to quote the tenders based
on CIDCO Registration and availing the facility of EMD Exemption by
depositing requisite amount with CIDCO Ltd., are required to pay the
difference in amount of EMD fixed for the present tender and amount
already deposited with CIDCO Ltd., for availing the facility of EMD
exemption. The tenderer shall upload the same and also submit attested
copy of valid EMD exemption certificate issued by Executive Engineer(NM),
CIDCO Ltd. to the tender issuing authority prior to opening of financial
bids.
The tenderers who are eligible for issue of tender document on the basis
of registration other than CIDCO registration, shall not be eligible for
availing the facility of EMD Exemption and shall pay full EMD amount.
Tenderers are required to submit the Tender Fee of Rs.10,000/- (Rupees
Ten Thousand Only) (Non-refundable) by way of separate demand draft
drawn in favour of “CIDCO Ltd.” payable at Mumbai / Navi Mumbai and
the same should necessarily be scanned and uploaded in PDF format for
downloading the on-line Tender Document.
The scanned copy of the valid E.M.D. documents of appropriate amount
in PDF format shall be uploaded along with submission of on-line tender.
Original Demand Draft towards cost of tender document, original EMD
documents (Demand draft/Bank Guarantee) and undertaking for
submission of tender shall be submitted in sealed envelope as prescribed
in tendering programme. Financial bid will not be opened till the above
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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documents are submitted. in no case the cost of tender document should
be clubbed with E.M.D. amount.
3.1 The failure or omission to deposit or keep deposited the Earnest Money
shall disqualify the tenderer for that tender.
3.2 No interest shall be payable by CIDCO in respect of such deposited
Earnest Money.
3.3 The Earnest Money of an unsuccessful tenderer shall be refunded after the
final decision on the tenders or on expiry of the validity period whichever
is earlier on presenting receipt thereof.
3.4 a) Invitation by CIDCO to submit the tender shall be a proposal and the
submission of a tender by the tenderer shall be an acceptance of such
proposal to win the contract. The tenderer shall not revoke his tender
or vary its terms and conditions without the consent of CIDCO during
the period of 120 days counted from the last day appointed by
CIDCO for submission of tenders. If the tenderer shall revoke the
tender or vary its terms or condition contrary to his promise to abide
by this condition, the Earnest Money Deposited by him shall stand
forfeited to CIDCO without prejudice to its other rights and remedies.
Without prejudice to the foregoing clause, the tenderer shall be
disentitled to submit a tender to CIDCO for execution of any civil work
during the next 24 months effective from the date of such revocation
or variations of the terms and conditions of the tender.
b) The authorized signatory of the lowest tenderer shall duly sign with
their company seal on each page of the hard copy of the tender
documents prepared, within 7 (Seven) working days after issue of
Letter of Acceptance (LOA).
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3.5 If CIDCO shall accept the tender and signify such acceptance to the
tenderer, the Earnest Money so deposited with CIDCO by Demand Draft
shall be appropriated towards Performance Security payable by the
contractor in accordance with Condition No. 10.1 of the General
Conditions of contract.
3.6 If the tenderer has deposited the Earnest Money by a Bank Guarantee
and he has been communicated the acceptance of his tender by CIDCO
and if he fails or omits to furnish the Contract Deposit within 15 days in
accordance with condition No.10.1.1 of the General Conditions of
contract, CIDCO shall be entitled to encash the Bank Guarantee.
3.7 In case of the successful tenderer, on payment of the required amount
of the Contract Deposit, the Earnest Money Deposited in the form of
Bank Guarantee/Demand Draft/pay order shall be refundable to the
tenderer in the event of CIDCO deciding the award of the contract.
3.8.1 The E.M.D. of the successful tenderers shall be forfeited if he
withdraws/revokes his offer or modifies/changes the same during the
validity of the tender, or if after the acceptance of his tender, the
contractor fails or neglects to furnish the balance Contract Deposit
within 15 days.
3.8.2 The E.M.D. of the successful tenderer shall be entitled for forfeiture if
he fails to execute contract agreement within 15 days from the date of
issue of Work Order.
3.8.3 The E.M.D. of the successful tenderer shall be entitled for forfeiture if
he fails to commence; the work within 30 days from the date of issue
of Letter of Acceptance.
3.8.4 The tenderers may also be dis-qualified for tendering for further works
in CIDCO as provided in foregoing Clause No. 3.4 on Sl. Pg No. 11.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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4.0 INTERPRETATION OF CONDITIONS OF CONTRACT
The tenderer shall be deemed to have studied all plans, specifications,
terms & conditions of tender and visited the site of work and made
himself acquainted with the site conditions, availability of labour, basic
materials, water, electricity, approach road to site etc., before on-line
submission of tender, whether the tenderer inspect them or not.
The tenderer shall be deemed to have made independent enquiries
about probable taxes leviable by the local civic authority or the
Government. The ignorance about probable taxes to be paid either to
the local civic authority or to the government shall not be considered as
an excuse. The percentage quoted by tenderer shall be deemed to
include all the taxes, octroi, duties, royalties, etc. payable under the
rules to local civic authority, and / or Government / Statutory body.
On-line submission of Tender implies that tenderer has read these
conditions and other contract documents of the tender as well as the
conditions of the tender and as made himself aware of the same as
also about the condition and other factors having bearing on the
execution of the order.
In case of difference of opinion or dispute regarding the interpretation
of tender conditions, the interpretation of any of the conditions by
Chief Engineer & General Manager (Tech.) of CIDCO Limited shall be
final and binding on the tenderer.
5.0 BLANK TENDER FORM :
Blank tender form will be downloaded from the website. Any other
additional information and/or clarification can be had from the
office of Superintending Engineer (DRON), 5th Floor, Raigad Bhavan,
CBD-Belapur, Navi Mumbai on all working days during the office
hours.
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6.0 METHOD OF SUBMISSION OF TENDER :
The complete tenders submission, “ON-LINE” on the website
cidco.maharashtra.etenders.in can be made only after payment of
requisite fee through payment gateway of the service provider by
prequalified tenderers.
6.1 Tender should be submitted through website
http://cidco.maharashtra.etenders.in and ON-LINE only.
6.2 Late tender offers : Tender’s grievance/ complaint on account of non
submission of tender due to problem in internet, electricity or any other
reason will not be considered.
7.0 METHOD OF OPENING OF TENDER
On the time specified in the tender programme, the tender will be
opened in the presence of tenderers / their representative through
e-tendering procedure at Training Centre, 3rd Floor, CIDCO Bhavan,
CBD Belapur, Navi Mumbai.
CIDCO reserves the right to reject any or all offers. CIDCO is not
bound to give any reason for not considering such offers.
8.0 VALIDITY OF TENDER
Validity of tender shall be 120 days from the specified date of receipt
of tender by CIDCO & there after until it is withdrawn by notice in
writing duly addressed to the authority opening the tender. Such
withdrawal by CIDCO will be effective from the date of receipt of
notice by the tender opening authority.
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9.0 IMPORTANT POINTS TO BE NOTED BY THE TENDERER
a) The ON-LINE submission of tender document should be done on
website by the eligible contractors as per tender programme. The
tenderer has to quote only the percentage in figures. The
percentage in words as also the total quoted amount in figures is
worked out automatically on the web page.
b) The price-bid (percentage) shall be inclusive of all taxes, octroi,
levies duties etc. to be paid by the tenderer for the work and claim
for extra payment on any such account shall not be entertained.
c) Tenderer shall deemed to have studied all plans, specifications,
terms and made himself/themselves acquainted with the site and
availability etc. before submitting the tender.
d) At any time prior to the deadline for sale of tender, the Employer
may amend the tender documents by issuing Corrigendum.
e) Any corrigendum as well as clarification thus issued shall be a part
of the tender documents and it will be assumed that the information
contained in the amendment have been taken into account by the
tenderer while submitting the tender.
f) To give prospective tenderers reasonable time in which to take the
amendment into account in preparing their tenders, the Employer
shall extend, at its discretion, the deadline for submission of
tenders, in which case, the Employers will notify all tenderers by
placing it on website of the extended deadline and the same will be
binding on them.
g) The Employer is not bound to accept the lowest or any tender. The
Employer reserves the right to reject any or all tenders received
without assigning any reasons whatsoever.
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h) This detailed tender notice shall form part of tender documents.
i) Income Tax as applicable on gross bill at percentage that will be in
force form time to time will be recovered from the contractor’s bills,
for all payment including advances.
j) The successful tenderer is required to execute an agreement on
stamp paper of appropriate value in duplicate in the proforma
attached with the tender documents. The agreement shall be signed
within a period of 30 days from date of acceptance of the tender.
10.0 ACCEPTANCE OF TENDER
Acceptance of tender on behalf of the Employer shall be done by an
officer to whom the powers are delegated by the Management.
11.0 EXECUTION OF CONTRACT AGREEMENT :
The successful tenderer is required to execute a contract agreement in
duplicate in the form attached with the tender documents on stamp
paper of proper value. The proper value at present is Rs. 100/-.
The contract agreement should be signed within 30 days from the date
of acceptance of the tender.
12.0 The successful tenderer will be required to produce to the satisfaction of
the Chief Engineer & General Manager (Tech), a valid contract labour
license issued in his favour under the provision of the contract labour
(Regulation and Abolition) Act, 1970, before starting the work. On
failure to do so, the acceptance of the tender is liable to be withdrawn
and also the earnest money is liable to be forfeited.
13.0 The Contractor shall pay the Contract Sales Tax and turnover tax etc.
directly to the Government. CIDCO shall not take any responsibility for
any kind of tax payment to the Government at any point of time.
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13.1 Under Inter-state Migrant Workmen Act and/or Contract Labour Act,
the Contractor should obtain requisite license / registration Certificate
under the Act while engaging the migrant labour from other State.
14.0 Wherever the tender is silent about the specifications, the work shall be
executed as per the Standard Specifications from PWD, Indian
Standard Specifications (Latest Version) for relevant items and
specifications of the Ministry of Road Transport & Highways and all
specifications of materials and workmanship.
15.0 SPLITTING OF WORK
CIDCO reserves the right to suitably increase/reduce the scope of work
put to this tender. The right to split up the work in two or more parts is
reserved by the Employer and also the right to award the work to more
than one agency is reserved. The contractor shall have no claims
whatsoever on this account.
16.0 SPARE CAPACITY OF WORK FOR TENDERING:
The tenderer shall be eligible to submit the tender to CIDCO subject to
the essential condition that the price tendered by him together with the
value of the outstanding works under execution by him for CIDCO or
any other employer shall not be more than four times the value of the
average annual turnover of works executed during the preceding three
financial years.
16.1 The tenderer shall furnish truly & faithfully the foregoing information by
an Affidavit on a Non-Judicial stamp paper of Rs.100/-. If any
information so furnished shall be found to be untrue or false, the
tender shall be liable to be dis-qualified and the Earnest
Money/Performance Security as the case may be accompanying such
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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tender shall stand forfeited to CIDCO. If the information so furnished
shall be found to untrue or false during the currency of the contract, the
tenderer shall be held to be in default and the contract if any awarded
to him shall be liable to be terminated with its consequences.
17.0 Notice of tender and these instructions shall form part of the contract.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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UNDERTAKING FOR SUBMISSION OF TENDER
From : ____________________________
____________________________
To,
The Additional Chief Engineer (I&NT)
CIDCO of Maharashtra Limited,
3rd Floor, CIDCO Bhavan,
CBD-Belapur, Navi Mumbai.
Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB
at Dronagiri.
C.A. No. : 06/CIDCO/EE(DRON-I)/2011-12
Sir,
1) I/We M/s. __________________________________________ hereby tender for
___________________________________________________________________
___________________________________________________________________
_____________________________________________________ at a total cost
which is quoted in the financial bid ON-LINE at the rate contained in the
aforesaid Schedule of rates and quantities (Schedule - A) including adding to
percentage the rate or deducting the percentage therefrom in case of
percentage tender.
2) I/We agree to execute this work at the above stated offer in accordance with
Design, Drawings, Specifications, Instructions/Directions, Special Conditions
of contract & general conditions of contract supplied by CIDCO which I/We
have read carefully.
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3) I/We have read the General Conditions of Contract & tender documents
attached hereto and agree to abide by such conditions.
4) I/We agree to keep this tender offer open and available to you for
acceptance for a period of 120 (One Hundred Twenty) days from the last
date appointed by CIDCO for submission of tender and further agree not to
revoke the tender or vary its terms and conditions. I/We agree to the
Employer that if I/we revoke the tender or vary its conditions at any time
during such period, the earnest money deposited by us in cash or by way of
bank guarantee shall stand forfeited to you without prejudice to Employers
other rights and remedies.
5) I/We further agree to sign an agreement bond to abide by the General
Condition of Contract and to carry out works according to the specifications
laid down in the tender document.
6) I/We have satisfied myself/ourselves as to the location of the site and working
conditions, examined the requirements of CIDCO, and have obtained all the
information necessary for the successful timely completion of the work.
7) I/We hereby declare that I/We have myself/ourselves thoroughly conversant
with the local conditions regarding availability of all materials such as
cement, steel, sand, stones, murum, pipes, water and power etc. and labour
on which I/We have based my/our rates of this contract. The specifications
and leads of materials to be used in this work have been carefully studied
and understood by me/us before submitting/accepting the contract. I/We
undertake to procure only the best materials approved by the Engineer,
before using the same in the work and to abide by the decision. I/We also
undertake that I/We shall complete the work, if awarded to us, in all respects
on or before the stipulated date of completion.
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8) I/We bind myself/ourselves to deposit the Contract Deposit by way of cash or
as per CIDCO rules, as prescribed in Clause 10.1.1 of General Conditions of
Contract and/or Special Conditions of Contract within 15 days after receiving
your notice that the contract has been awarded to me/us, failing which I/We
shall have no objection to the forfeiture of the earnest money in full, or also
the said earnest money shall be retained by the Employer towards the
Performance Security as specified in the conditions. I/We further bind
myself/ourselves to execute the contract document and to commence work
within stipulated period as mentioned in General Conditions of Contract,
failing which I/We agree to the Employer forfeiting the earnest money and
Performance Security. The said Employer shall also be at liberty to cancel the
notice of acceptance of tender if I/We fail to deposit the Performance Security
as specified or to execute an agreement or to start work as stipulated in the
tender documents.
9) I/We hereby pay the Earnest Money of Rs.__________________________ in
the form of Demand Draft/Bank Guarantee No. ______________________
issued by ______________________________ for the said amount is attached.
10) I/We hereby enclose declaration of my/our experience of execution or works
of similar nature and magnitude carried out by me/us in the prescribed form.
11) I/we understand that you are not bound to accept the lowest tender or bound
to assign any reason for rejecting our tender.
12) I/We agree that the CIDCO shall without prejudice to any other right or
remedy, be at liberty to forfeit the said earnest money absolutely, if -
a) I/We revoke my/our tender or vary any of terms and conditions at any
time during the period of 120 days as stated in Clause No.3.4 of Notice
of Tender & Instructions to the Tenderers.
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b) I/We do not execute the formal contract or make the contract deposit
when called upon to do so.
c) I/We do not commence the work on or before the date specified by
Engineer in the work order.
Yours faithfully, (Signature of Tenderer with seal of the firm)*
Signature of Witness
Date :
Name : ______________________
Address :_____________________
Occupation: _________________
* Power of attorney must be enclosed in case the tender is signed by the
authorized nominees.
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SPECIAL CONDITIONS OF CONTRACT
1.0 GENERAL
The special conditions of contract are to be read in conjunction
with General conditions of contract. If there are any variations or
discrepancies on conflicting provision, the provisions in Special
Conditions shall take precedence over the provisions in the
General Conditions of Contract.
2.0 SCOPE OF WORK
The tender is for the work of “Realignment of 36.0 M wide road in
Sector-5, near existing ROB at Dronagiri.” The work to be carried out
under the contract shall except as otherwise provided in this conditions
include all labour, material, tools, plants, equipment & transport which
may be required in preparation and completion of the works.
The description given in the schedule of works/items/quantities, and
the Bills of Quantities shall, unless otherwise stated, be held to include
waste on materials, carriage & cartage carrying in, return of empties,
hoisting, setting, fitting & fixing in position and all other labour
necessary in & for the full and entire execution & completion as
aforesaid in accordance with good practice & recognized principles.
2.1 The scope of work is as described in detail in schedule “A”. Items of
work to be executed are described in detail to enable the tenderer to
work out rate of each element.
2.2 The exact methodology and quality/quantity audit of carrying out
various items under Schedule “A” and parts shall be incorporated in
the Q.A.M. and such shall be based on/referred as per the approved
Q.A.M. of CIDCO Limited Engineering Department (2009) and further
approved by Engineer.
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2.3 The various items under Schedule “A” will be comprehensively
undertaken as directed by Engineer and laid out programme in the
Quality Assurance Manual (QAM).
3.0 FIELD LABORATORY
The contractor shall establish a Field Laboratory for the various field
tests for items like concrete cubes, cement aggregates, sand,
bitumen & bitumen products, soil, field density and for similar items
as directed by the Engineer. A site laboratory of approx. 3.0 m. x
4.0 m. area with platform etc. shall be constructed as directed by
the Engineer. A contractor shall appoint experienced Laboratory
Technician to carryout various tests at site.
The laboratory must have the following equipments.
A Slump Cone 1 No.
B Cube Moulds for concrete 18 Nos.
C Cube Testing Machine (150 Tonnes capacity) – electrically operated
1 No.
D Weigh Balance
(2 kg., 5 kg., 20 kg. capacity)
2 Nos.
E IS Sieves (for Course & Fine Aggregates) 1 Set (Each)
F Glass measuring cylinders 3 Nos.
G Moisture Meter 1 No.
H. Field density test equipment with sand pouring cylinder, 3 litres & 15 litres capacity, cutter etc.
1 No.
I MPD apparatus with required IS Sieves & Oven
1 Set
J Bitumen Extraction Apparatus (Manual) 1 No.
K Thermometer (Digital) 1 No.
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Construction of field Laboratory well equipped with equipment as
listed above is incidental to the work and no separate payment will
be made for this. He should be obtain all relevant I.S. Codes,
Specification books and be kept at site office.
The contractor shall carry out other various tests for various items
and materials at IIT or VJTI laboratories or any other approved
laboratory as directed by the Engineer at contractor’s own cost. At
the end of each month for each category of the work, i.e. PCC/RCC
work, masonry work etc. the contractor shall give statistical analysis
of all the test results in the format prescribed by the Engineer and
take corrective action in the work in accordance with these results.
All pressure gauges, machines, equipments & other measuring &
testing equipments of the laboratory shall be got checked / calibrated
regularly as directed by the Engineer & the necessary certificates
furnished to the Engineer by the Contractor.
4.0 TESTING OF MATERIALS IN CIDCO LABORATORY:
CIDCO has a well equipped testing laboratory for carrying out tests on
soil, cement, sand, aggregate, brick and concrete etc. as prescribed in
I.S. The Engineer may direct the Contractors to get the samples of
materials tested etc. in CIDCO laboratory. The results of the tests are
normally binding on the Contractor and CIDCO. The Engineer is also
empowered to take action to reject or approve materials based on the
test results.
The Contractor shall pay the stipulated charges for carrying out the tests
as per CIDCO rules. In case the Contractor disputes the results of tests, it
is open for him to ask for re-testing in which case the cost shall be borne
by the Contractor. The decision of the Chief Engineer on acceptability or
otherwise of CIDCO test results, re-testing by CIDCO or testing again
independently in V.J.T.I. or I.I.T. will be binding on both the parties to the
contract.
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5.0 QUARRY
Quarry for extraction of murum shall not be made available by
CIDCO. The Contractor has to make his own arrangement for
quarry at his own cost. Uptill now, the CIDCO was exempted from
paying the Royalty charges for quarries made available in CIDCO
area to the contractors. However, this facility is now cancelled by
Ministry of Revenue and Forest Department of Govt. of Maharashtra
vide their Marathi G.R. No. ieewKeefve/ 1088/433/3592/Ke dated
18.10.2001 and subsequent amendment to this vide Marathi
Circular No. ieewKeefve/10/2001/He.keÀ.308/Ke dated 15.12.2003 and as
amended from time to time. The contractors are requested to obtain
quarry permission from Competent Authority for excavation required
for the work. Therefore, the contractors will have to pay the necessary
Royalty charges for the quarries. Royalty will have to be paid as per
the prevailing rates on the minor minerals available from the
excavation of channels, roads or drains adjoining the roads, bunds,
trenches, reclamation, area leveling, foundation for construction
works etc. use for the works in the same place or at other places.
The Contractor shall have to provide at his cost accesses to the
quarry through private land. All compensation, royalties, fees etc.,
which may be required shall be borne by the Contractor without extra
cost to the Employer.
Contractor will be responsible for payment of royalty for the minor
mineral such as murum etc. available from excavation.
The obstruction and/or impassments caused for access to the quarry
shall be cleared or set right by the Contractor. No claim in this
respect shall be entertained by the Employer.
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If Contractor desires to seek No Objection Certificate for Quarry
form CIDCO for a private land or CIDCO land or Government land,
Revenue land, Authorised land etc., the Contractor shall have to
apply indicating therein the Survey Nos., from where he wishes to
quarry. The contractor will have to furnish the necessary revenue
maps and ‘Sat-bara’ of private owners and No Objection Certificate
of private Owner/Department for quarrying murum. The necessary
charges of processing the application to the respective Collector of
respective District shall have to be borne by the Contractor. The
contractor will have to pay the necessary ground rent/surface rent of
the area if demanded by the Land Section. The Contractor also will
have to pay the environmental cess, if imposed by the Employer for
issuing No Objection Certificate. After issuing the No Objection
Certificate, the Contractor shall have to execute an agreement with
Land Department, on necessary stamp papers. All the expenditure
for processing the case shall have to be borne by the Contractor and
no claim whatsoever on this account shall be entertained.
The Contractor shall have to submit Quarry Permit for the
murum/earth brought at site of work and the quantity of murum for
payment of bills shall be restricted to that of quarry permits
submitted.
Dewatering if required will not be paid separately. Tenderer should
include cost of this item in his offer.
The work shall be carried out according to the cycles of High Tide
and Low Tide period. The tenderer should note that no extra
payment will be made for idle changes for labour and machinery
due to restricted working hours during period of high tide.
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5.1 ENVIRONMENTAL CESS
Environmental cess tax @ Rs.1.00/cum. will be deducted from the
contractor’s payments for gross volume of murum computed
without deductions as mentioned for monthly payment and Final
payment.
5.2 QUARRY PERMIT
The successful tenderer shall obtain the quarry permission from the
competent authority and shall submit original permit issued by
competent authority to CIDCO before starting the work and during
subsequent execution of work till its completion. Besides above, the
tenderer shall also submit the original receipt / challan of the
payment made towards quarry charges before each monthly
statement.
On completion of work, the contractor shall obtain the “Royalty
Clearance Certificate” from the office of the Collector and the same
shall be submitted to Engineer before final statement. The final
payment will not paid till above Royalty Clearance Certificate in
original is submitted to Engineer.
6.0 DOCUMENTATION
The contractors are required to submit three copies of
as built drawings in Auto Cad formats with all relevant details on
reproducible tracing (one copy of tracing and three copies of blue
prints and all data on CD) along with the final statement in neat
folders. Photographic evidence of work under execution/completed in
form of CD as well as photographs will also be submitted. The
contractors shall appoint the services of professional surveyors at no
extra cost to CIDCO.
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Photography & Videography to be done with the help of Digital
camera for documentation of important activities/events. Three copies
& one C.D. of the same should be submitted as directed by Engineer.
This will be at no extra cost to CIDCO.
7.0 QUALITY ASSURANCE SYSTEM :
The contractor will prepare detailed working programme with the help
of professional consultant who should be associated with the work. He
shall also ensure the quality of the work.
7.1 Quality Assurance Manual :- A Quality Assurance manual constituting
a base document outlining policy, procedures, compliance,
acceptance criteria and documentation etc. shall be prepared by the
successful tenderer and should submit for approval within 15 days
from the date of receipt of Work Order. The document shall generally
cover aspects listed below, but is not limited to the same.
i) Identification of all parties involved in Q.A. and their inter-
relationship.
ii) Internal Q.A. system of each party.
iii) Organisation of personnel, responsibilities and lines of
reporting for Q.A. purpose.
iv) Criteria for acceptance / rejection, including identification of
proper authorities for such decisions.
v) Inspection at the end and during defect liability period/
maintenance period.
8.0 SAP
CIDCO Ltd. has implemented Enterprise Resource Planning (ERP)
software SAP in the organization for its various processes. The
contractor will furnish all the project related data, if & when required
by the Engineer, in the manner & format which is compatible to
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Enterprise Resource Planning software SAP R/3. Apart from the above,
the contractor will make a detailed work program on MS project in soft
& hard copy and submit the same to Engineer for approval before
commencement of work. All monitoring will be done on SAP R/3 as
well as MS project.
9.0 RESTRICTION ON THE DESTRUCTION OR DENUDATION OF
MANGROVES IN NAVI MUMBAI
The contractor shall be aware of the directives given by the Hon’ble
High Court in PIL No.3246 of 2005 for preservation of Mangroves.
He shall submit the affidavit on a Stamp Paper of Rs.100/- in this
respect as per the proforma given on Sl.Pg.No. 52 to 53.
10.0 DEDUCTION OF CESS TOWARDS WELFARE OF BUILDING &
CONSTRUCTION WORKERS
As per the Construction Workers Welfare Cess Act 1996, a cess of 1%
of Contract value towards the welfare of construction workers will be
deducted from the monthly payments.
11.0 TRANSPORTATION : The contractor will provide Air Conditioned Hardtop Vehicle viz.
Xylo/Qualis/Scorpio in good condition along with driver and the
same will be kept at the disposal of Engineer for the use by CIDCO
Staff during the contract period as stipulated in Annexure “A”
including extension granted, if any. This vehicle will be used for
CIDCO works under the directives of the Executive Engineer. The
running of vehicle per month will be 3,000 km. The contractor will
bear all expenses, connected with the operation of the maintenance
of this vehicle, including driver’s wages, overtime and other
benefits, cost of the fuel, lubricant, repairs and maintenance, third
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party insurance, any other related expenses etc. to the satisfaction of
the Executive Engineer. The vehicle record will be maintained in the
form of log-book at site. The vehicle shall be replaced with a new
vehicle during breakdown time, failing which the Employer will hire
the vehicle at the risk and cost of the contractor.
12.0 REGISTRATION OF CONTRACTOR UNDER CESS WITH NMMC
Contractors/Suppliers quoting for the work in NMMC area must have
valid NMMC Registration Certificate under Cess Act. Incase
registration under Cess Act is not available with Contractor/ Supplier
at the time of tendering, he shall submit an undertaking on Rs.100/-
Stamp Paper of agreeing to submit the same before issue of
Acceptance Letter.
13.0 REGISTRATION WITH E.S.I.C. :
The contractor to get registered with E.S.I.C. under Contract Labour
Act, within 15 days from the date of work order. In absence of getting
registration from E.S.I.C. and not furnishing the license, 1% of contract
sum shall be recovered from Monthly and Final Payments in order to
pay the demand raised by E.S.I.C.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
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PROFORMA OF CONTRACT AGREEMENT
(On Stamp paper of Rs.100/-)
AGREEMENT FOR THE WORK OF “_____________________________________
______________________________________________________________” (Name of
Work) Article of Agreement made at _________________ (Place)on _____(day)of
_____(Month) of Two Thousand __________ (Year) between City and Industrial
Development Corporation of Maharashtra Limited, a Government of Maharashtra
Undertaking, incorporated under the Companies Act, 1956 and having its
Registered Office at ‘NIRMAL’, 2nd floor, Nariman Point, Mumbai-400 021
(hereinafter called the ‘EMPLOYER’) of the One part and
__________________________________________________(Name of Agency) whose
Registered office is situated at ____________________________________________
(address) (hereinafter called the ‘CONTRACTOR’) of the Other Part.
WHEREAS
The Employer being desirous of providing & executing the work mentioned,
enumerated or referred to in the Tender Notice including Corrigendum to Tender
Notice, Instructions to Tenderer, General Conditions of Contract, Special
Conditions of Contract, Notes & Preambles, Schedule of Rates & Quantities,
Specifications, Drawings and other documents, constituting a Bid and acceptance
thereof, copy hereto annexed all of which are designed to form part of this contract
and are included in the term ‘CONTRACT’ wherever herein used.
AND WHEREAS
The Employer accepted the Bid of the Contractor for the provisions and the
execution of the said work at the rates/percentage stated in the schedule of
quantities of works (hereinafter called the Schedule of Rates upon the terms and
subject to the conditions of contract)
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AND WHEREAS
The Contractor has deposited with the Employer the sum of Rs._____________
(Rupees______________________________________ only) being the Contract
Deposit payable by him at the rate of 2.50% of the Contract sum and undertake to
pay the balance of the Performance Security payable by him at the rate of 2.50% of
the Contract sum, by allowing the Employer to deduct amount from the bills payable
to him at rate of 5% provided that the total deduction together with contract deposit
shall not exceed in the aggregate 5% of the contract sum.
NOW THIS AGREEMENT WITNESSES AND IT IS HEREBY AGREED BY AND
BETWEEN THE PARTIES AND DECLARED AS FOLLOWS :-
1. The documents which form part of the contract will be the Tender Notice,
including Corrigendum to Tender Notice, Instructions to Tenderers, General
Conditions of Contract, Special Conditions of Contract, Notes & Preambles,
Schedule of Rates & Quantities, Specifications, Drawings and other
documents, constituting a Bid and acceptance thereof. It is further agreed
that the “Acceptance Letter” vide No. ____________________ dated________
& Work Order or Order for Commencement of Work shall constitute part and
parcel of the contract between the parties.
2. In consideration of the payments to be made to the Contractor for the works
to be executed by him, the Contractor shall and will duly provide, execute and
complete the said work on or before the dates mentioned in the time schedule
of completion of work attached to the Bid documents and shall maintain the
same at his own cost for the defects liability period thereafter and perform all
such acts and things in the contract mentioned or described or which are to
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be implied there from or may be reasonably necessary for the completion of
the said works at the times and the manner and subject to the terms and
conditions or stipulations mentioned in the contract.
3. In consideration of the due provision, execution and completion of the said
works, the Employer does hereby agree with the Contractor that the Employer
will pay to the contractor, the respective amount for the work actually done by
him at the schedule rates quoted and such other sums as may become
payable to the Contractor under the provisions of the contract, such payment
to be made at such time and in such manner as provided for in the
agreement.
4. In consideration of the due provisions, execution and completion of the said
work, the ‘Contractor’ does hereby agree to pay to the Employer the sums as
may be due to the Employer for the services if rendered by the Employer to the
Contractor and such other sum or sums as may become payable to the
Employer towards loss, damage to the Employer’s equipment, materials
construction plant and machinery, including those hired to the contractor, if
any set forth in the said conditions of contract, such payments to be made at
such time and in such manner as provided in the contract.
5. All disputes arising out of or in any way connected with this Contract
Agreement shall be deemed to have arisen in Mumbai and only the courts in
Mumbai shall have jurisdiction to determine the same.
6. The several parts of this contract have been read by me/us and fully
understood by me/us.
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IN WITNESS WHEREAS THE PARTIES HAVE EXECUTED THESE PRESENTS IN DUPLICATE THE DAY AND YEAR FIRST MENTIONED ABOVE.
SIGNED & DELIVERED FOR AND ON } BEHALF OF CITY AND INDUSTRIAL } DEVELOPMENT CORPORATION OF } MAHARASHTRA LIMITED. } Signature __________________
Designation_________________
In the presence of WITNESS :
1. ____________________ Address _______________
2. ____________________ Address _______________
SIGNED AND DELIVERED FOR }
AND ON BEHALF OF M/s. __________} _________________________________ }
Signature ________________
In the presence of WITNESS :
1._____________________ Address __________________
2._____________________ Address __________________
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PROFORMA OF BANK GUARANTEE
IN LIEU OF CONTRACT DEPOSIT
(on stamp paper Rs. 100.00 from Nationalised Bank
& operatable in Mumbai or Navi Mumbai only)
(B.G. shall be in case of Contract Amount more than Rs.100 Lacs) To,
City & Industrial Development Corporation of Maharashtra Limited, ‘Nirmal’, 2nd Floor, Nariman Point, Mumbai - 400 021.
1) In consideration of the City and Industrial Development Corporation of
Maharashtra Limited., a Company incorporated under the Companies Act
1956 (1 of 56) and having its registered Office at Nirmal, 2nd Floor, Nariman
Point, Mumbai-400021 (hereinafter called the ‘Employer’ which expression
shall unless repugnant to the subject or context include its successors and
assigns) having agreed under the terms and conditions of Contract
No.________________________ dated________ made between M/s
__________________________ (Name of Agency) (hereinafter called the
‘Contractor’ which expression shall unless repugnant to the subject or
context include his heirs, executors administrators and assigns / (its successors
and assigns) and the Employer in consideration with
____________________________________________________(Name of Work).
(hereinafter called the said “Contract”) to accept a deed of Guarantee as
herein provided for Rs.______________by _____________________ (Name of
the Nationalized / Scheduled Bank, Mumbai / Navi Mumbai Branch) towards
Contract Deposit, for the due fulfillment by the Contractor of the terms and
conditions contained in the said contract, We, _________________________
(Name of Bank and detailed address) the Bank constituted and established under
the Banking Companies (Acquisition and Transfer of Undertaking) Act, 1979
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(hereinafter referred to as the ‘said Bank’) and having our Head Office at
____________________________________________________(address) at the
request of M/s. _____________________________________ (Name of Agency)
do hereby undertake to pay to the Employer an amount not exceeding
Rs._____________ (Rupees _________________________________________
only) against any loss or damage caused to or suffered or would be caused to
or suffered by the Employer by reasons of any breach or breaches by the said
Contractor(s) of any of the terms or conditions contained in the said Contract
Agreement and to unconditionally pay the amount claimed by the Employer
on demand and without demur to the extent expressed.
2) We, ________________________________________________ (Name of Bank)
do hereby undertake to pay the amounts due and payable under this
guarantee without any demur, merely on a demand from the Employer stating
that the amount claimed is due by way of loss or damage caused to, or would
be caused to or suffered by the Employer by reasons of breach by the said
Contractor(s) of any of the terms or condition contained in the said Contract
Agreement or by reasons of the Contractor(s) failure to perform the said
Contract Agreement. Any such demand made on the Bank shall be
conclusive as regards the amount due and payable by the Bank under this
guarantee. However, our liability under this guarantee shall be restricted
to an amount not exceeding Rs.____________________ (Rupees
____________________________________________________________only).
3) We, _______________________________________________(Name of Bank)
further agree that the Employer shall be the sole judge of and as to whether
the Contractor has committed and breach of any of the terms and conditions
of the said Contract and the extent of loss, damage, costs, charges &
expenses caused to or suffered by or that may be caused to or suffered by the
Employer on account thereof and the decision of the Employer that the
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Contractor has committed such breach and as to the amount or amounts of
loss, damage, costs, charges & expenses caused to or suffered by or that may
be caused to or suffered by the Employer from time to time shall be final and
binding on us.
4) We undertake to pay to the Employer any money so demanded
notwithstanding any dispute or disputes raised by the Contractor(s) /
Supplier(s) in any suit or proceeding pending before any Court or Tribunal
unequivocal, without demur. The payment so made by us under this bond
shall be a valid discharge of our liability for payment thereunder and the
Contractor(s)/ Supplier(s) shall have no claim against us for making such
payment.
5) We, _______________________________________________ (Name of Bank)
further agree that the guarantee herein contained shall remain in full force
and effect during the Contract Period including extensions in time limit if any
& also till such time the Taking Over Certificate is issued for the whole
completed work including that would be taken from the performance of the
said Agreement and shall continue to be enforceable till all the dues of the
Employer under or by the said Agreement have been fully paid and its claims
satisfied or discharged or till the _________________________________
_____________________(indicate the Authority & Administrative Department)
certified that the terms and conditions of the said Contract Agreement have
been fully and properly carried out by the said Contractor (s) and accordingly
discharges this guarantee. Unless a demand or claim under this guarantee is
made on us in writing on or before _________________ (Contract period +
claim period) we shall be discharged from all liability under this guarantee
thereafter.
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6) We, _______________________________, further agree with the Employer,
that the Employer shall have the fullest liberty without our consent and without
affecting in any manner our obligations hereunder to vary any of the terms
and conditions of the said Agreement or to extend the time of performance by
the said Contractor(s) from time to time or to postpone for any time any of the
powers exercisable by the Employer against the said Contractor (s) and to
forbear or enforce any of the terms and conditions relating to the said
Agreement and we shall not be relieved from our liability by reasons of any
such variation, or extension being granted the said Contractor(s) or for any
forbearance act or omission on the part of the Employer or any indulgence by
the Employer to the said Contractor(s) or by any such matter or thing
whatsoever which under the law relating to sureties would, but for this
provision have effect of so relieving us.
7) This guarantee will not be discharged due to the change of the constitution of
the Bank or the Contractor(s) /Supplier(s).
8) This guarantee is valid till ___________(completion due) unless a suitable
action to enforce the claim under this guarantee is made within six months
from completion date i.e. up to _____________(date) all yours rights under
this guarantee shall be forfeited and we shall be relieved and discharged
from all liabilities thereunder.
9) We, _____________________________ (Name of Bank) lastly undertake not to
revoke this guarantee during the currency except with the previous consent of
the Employer in writing.
Dated this ______ day of ________ 20__
FOR & ON BEHALF OF BANK
The above guarantee is accepted For and on behalf of the Employer
(Name & Designation)
Date :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
40
INDENTURE BOND (On stamp paper of Rs.100)
THIS INDENTURE made on the ______(Day) of __________(Month), 20____ (Year)
M/s. _________________________________________(Name of Agency) (hereinafter
called the ‘Contractor’ which expression shall, where the context so admits or
implies be deemed to include his heirs, executors, administrators, and assigns) of
the ONE PART and City and Industrial Development Corporation of Maharashtra
Limited, a Company incorporated under the Companies Act, 1956 and having its
registered office at ‘Nirmal’, 2nd floor, Nariman Point, Mumbai 400 021
(hereinafter called the ‘EMPLOYER’, which expression shall, where the context so
admits or implies be deemed to include its successor and assigns) of the OTHER
PART.
The contractor has entered into a contract dated _____________ for the work of
“_______________________________________________________________________”
(Name of Work) on the terms and conditions set out their.
The contractor has applied to the Employer that he be allowed advances on the
materials (hereinafter called the ‘said Material’) absolutely belonging to him and
brought by him to the site of the works for use in construction of such of the works
as he had undertaken to execute at stipulated rates, AND of aforesaid nature. The
security of the quantities and other particulars of the materials for which the
advances are being made in the Monthly Payments, will be the sole responsibility of
the Contractor.
NOW THIS INDENTURE WITNESSTH THAT IN PURSUANCE OF THE SAID
CONTRACT and in consideration of the sum of Rs.________________ paid on or
before the execution of these presents to the contractor by the Employer and of the
such further advance (if any) as may be made to him as aforesaid, the Contractor
hereby covenant and agree with the Employer and declares as follows:
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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1. That the said sum so advanced by the Employer to the Contractor as
aforesaid and all or any further sum or sums advanced as aforesaid shall
be used by the contractor in or towards expediting the execution of the
said works and for no other purpose whatsoever.
2. That the said materials which have been offered to and accepted by the
Employer for advances on material, is absolutely the Contractor’s own
property and free from encumbrances of any kind and the contractor shall
not make any application or receive a further advance from the Employer
on the same materials. The contractor indemnifies the Employer against
all claims to any material in respect of which an advance has been made
to him as aforesaid.
3. That the said materials and all other materials on the security of which any
further advances may hereafter be made as aforesaid shall be used by the
Contractor solely in the execution of the said works in accordance with the
direction of the Engineer (hereinafter called ‘the Engineer’) and in terms of
the said contract.
4. That the contractor shall make at his own cost all necessary and adequate
arrangements for the proper watch, safe custody and protection against
all risks of the said materials in the contractor’s custody and on his own
responsibility and shall at times be open to inspection by the Engineer or
any officer authorised by him. In the event of the said materials or any
part thereof being stolen, destroyed, or damaged, the contractor shall
forthwith replace the same with other materials of like quantity or repair
and make good the same as required by the Engineer.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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5. The above said materials shall not on any account be removed from the
site except with the written permission of the Engineer or any officer
authorised by him on that behalf.
6. That the advance shall be repayable in full when or before the contractor
receives the payment from the Employer on the price payable to him for
the said works under the contract provided that if any intermediate
payment are made to the contractor on account of work done, when on
the occasion of such payment the Employer will be at liberty to make a
recovery from the Contractor’s payment, for such payment by deducting
therefrom the value of the said materials actually used in the construction
and in respect of which recovery has not been made previously. The
value for the purpose of recovery has not been made previously. The
value for the purpose of recovery shall be at the rates at which the
advances were calculated.
7. That if the Contractor shall at any time make any default in the
performance of observance in any respect of any of their terms and
provisions of the said contract or of the said contract or of these presents,
the total amount of the advance or advances that may still be owing to the
Employer shall be immediately on the happening of such default be
repayable by the contractor to the Employer together with interest rate per
annum as prevailing from the date of the respective dates of such advance
or advances, to the date of repayment and with all costs, charges,
damages and expenses incurred by the Employer in or for the recovery
thereof or the enforcement of this security or otherwise be reasons of the
default of the contractor and the contractor hereby covenants and agrees
with the Employer to repay the same respectively to the Employer
accordingly.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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8. That the contractor hereby hypothecates all the said materials with the
repayment to the Employer of the said sum so advanced and any further
sum or sums, advance as aforesaid all costs, damage and expenses
payable under these presents provided always and it is hereby agreed and
declared that notwithstanding anything in the said agreement and without
prejudice to the powers contained therein shall become enforceable and
the money shall not be paid in accordance with, the Employer may at any
time thereafter adopt all or any of the following courses as he may deem
fit.
(a) Seize and utilise the said materials or any part thereof in the
completion of the said works on behalf of the contractor in
accordance debiting the contractor with the value of the work done
as if he had carried it out in accordance with the said contract and
the rates thereby provided. If the balance is against the contractor,
he is to pay same to the Employer on demand.
(b) Remove and sell by public auction the seized materials or any part
thereof and out of the money arising from the sale retain all the
sum aforesaid repayable or payable to the Employer under these
presents and pay over the surplus (if any) to the Contractor.
(c) Deduct all or any part of the money owning out of Performance
Security of any sum due to the contractor under the said contract.
9. That except in the event of such default on the part of the contractor as
aforesaid interest on the said advance shall not be payable.
10. The Contractor shall execute a promissory note for a sum of
Rs.________________ only in favour of the Employer to provide a collateral
security for the repayment of the advance made to the contractor.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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IN WITNESS WHEREOF THE _________________________________ and City &
Industrial Development Corporation of Maharashtra Limited have hereby put their
respective hands the day and year first above written.
SIGNED SEALED AND DELIVERED ) BY THE SAID CONTRACTOR IN ) THE PRESENCE OF ) ) SIGNATURE OF
CONTRACTOR
WITNESSES :
1.
2.
SIGNED SEALED AND DELIVERED ) BY AND FOR AND ON BEHALF OF ) CITY & INDUSTRIAL DEVELOPMENT ) CORPORATION OF MAHARASHTRA ) LIMITED ) IN THE PRESENCE OF WITNESSES )
ENGINEER
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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PROMISSORY NOTE (on stamp paper of Rs.100/-)
In terms of para 10 of Indenture Bond we agree to pay a sum of Rs._____________
(Rupees __________________________________________________________________
_____________________) as a collateral security for Contract Agreement No.
__________________________________________________________ for the work of
_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________ .
For
(Signature of Contractor)
Place :
Date :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
46
INDEMNITY BOND
(ON STAMP PAPER OF VALUE OF RS. 100/-)
In consideration of City and Industrial Development Corporation of Maharashtra
Limited, a Company incorporated under the Companies Act, 1956 and having its
Registered Office at “Nirmal”, 2nd floor, Nariman Point, Mumbai - 400 021
(hereinafter referred to as the ‘Employer’, which expression shall unless it be
repugnant to the context or meaning thereof includes it’s successors and assigns)
having awarded the contract of the work of “________________________________
___________________________________” (Name of Work) at an awarded cost of Rs.
________________ to M/s. _____________________________________ (Name of
Agency) a Partnership / Proprietorship / Private Limited / Public Limited firm carrying
in such name and style the business of construction (hereinafter referred to as the
‘Contractor’ which expression shall, unless it be repugnant to the context or meaning
thereof, includes its Proprietor/Partners/Directors for the time being or its surviving
partner or his heirs and executors).
We, M/s. _____________________________________, being the Contractor do
hereby agree and undertake and indemnify and save harmless the Employer in
consequence of the manufacturing defect, latent manufacturing defect and
construction defect found in the constructed works at any time in a period of Five (5)
years commencing with the certified completion date certificate by the Employer to
the Contractors in accordance with and subject to the provisions of the said contract.
It is hereby agreed and declared that the Chief Engineer & General Manager (Tech) of
the Employer or any officer acting on his behalf shall be Competent Authority to decide
upon the question as to the defects in the construction of works and the remedy to be
applied by the Contractor for their rectification at his cost and his decision shall be
final, conclusive and binding upon both the Employer and the Contractor, provided
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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that the Chief Engineer & General Manager (Tech) shall so decide after giving an
opportunity to the Contractor to represent his case.
We hereby agree and undertake irrevocably and unconditionally to carry out duly
each and every decision, order, direction or instruction as may be issued by the said
Chief Engineer & General Manager (Tech) or as the case may be, the Officer of the
Employer in this behalf and to rectify properly and promptly the defects found by
him.
For & On behalf of M/s.______________ _________________________________
Date : (Seal) Notary, Maharashtra State
Before Me
Notary, Maharashtra State Notary and Registered at Serial Number Accepted by : ____________________________
(For & On behalf of CIDCO Ltd.)
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
48
PROFORMA OF BANK GUARANTEE FOR EMD
(Valid for Min. period of 6 months) (On stamp paper of Rs. 100/-)
To:
The City and Industrial Development Corporation of Maharashtra Limited, ‘Nirmal’, 2nd floor, Nariman Point, Mumbai - 400 021.
1. In consideration of City & Industrial Development Corporation of Maharashtra
Limited, a Company incorporated under the Companies Act, 1956 (I of 56)
and having its registered office at ‘Nirmal’, 2nd floor, Nariman Point,
Mumbai 400 021 (hereinafter called the “Employer” which expression shall
unless repugnant to the subject and context on meaning thereof include its
successors and assigns) having invited tenders in connection with Contract
No. __________________________ dated __________ for the execution of
Civil work of ______________________________________________________
and in further consideration of the Employer having consented to permit
M/s._______________________________________________ (Name of Agency)
(hereinafter called “the Tenderer”, which expressions shall unless be
repugnant on the context and meaning thereof include his heir, executors and
administrators and assign/assigns) to deposit the Earnest Money Deposit of
Rs.____________ (Rupees __________________________________________)
in the form of an unconditional and irrevocable Bank Guarantee furnished by
(Name of Nationalised / Scheduled Bank, Mumbai / Navi Mumbai Branch) in
accordance with the conditions of the said notice inviting the tenders.
2. We the Bank of _____________________________________(Name of Bank),
constituted and established under the Banking companies Act, Acquisition
and Transfer Undertaking Act 1970 - a company incorporated under
Companies Act 1956 and Scheduled Bank, within the meaning of Reserve
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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Bank Act 1934, Clause (e) of Section 2 having our Head office at
__________________________________(Address) do and hereby guarantee,
undertake and agree to pay the Employer a sum of Rs.________________
(Rupees _________________________________________________________)
in the event of the tenderer revoking his tender or; offer or vary or modify any
conditions stipulated in, more particularly specified in para 3.4 of the Notice
of Tender & Instructions to the Tenderers; or further, in the event of the
tenderer failing or omitting to deposit the Contract Deposit in accordance with
Condition No.10.1.1 of the General Conditions of the contract.
3. We, Bank of ___________________________________ further agree that the
Employer shall be sole judge of and as to whether the contractor has
committed any breach or breaches of any of the terms and conditions of the
said contract and the extent of loss, damages, costs, charges and expenses
caused to or suffered by or that may be caused to or suffered by the Employer
on account thereof and the decision of the Employer that the contractor has
committed such breach or breaches and as to the amount or amounts of loss,
damage, cost, charges and expenses caused to or suffered by or that may be
caused to or suffered by the Employer from time to time shall be final and
binding on us.
4. We, the said Bank, further agree that the Guarantee herein contained shall
remain in full force and effect during the period that would be taken for the
performance of the said contract and till all the dues of the Employer under
the said Contract or by virtue of any of the terms and conditions governing
the said contract have been fully paid and it’s claims satisfied or discharged
and till Chief Engineer & General Manager(Tech) certifies that the terms and
conditions of the said contract have been fully and properly carried out by the
contractor and accordingly discharges this guarantee subject however that the
Employer shall have no claim under this Guarantee after completion of the
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
50
work or from the date of cancellation of the said contract, as the case may
be, unless a notice of the claim under this Guarantee has been served on the
Bank before the expiry of the said period of six months from the date of
receipt of tender i.e. in which case the same shall be enforceable against the
Bank not withstanding the fact that the same is enforced after the expiry of the
said period of six months from the date of receipt of tender
i.e._____________________.
5. The Employer shall have the fullest liberty without affecting in any way the
liability of the Bank under this Guarantee of Indemnity from time to time vary
any of the terms and conditions of the said contract or to extend time of
performance by the Contractor or to postpone for any time and from time to
time any of the power exercisable by its against the contractor and either to
enforce or forbear from enforcing any of the terms and conditions governing
the said contract or securities available to the Employer and the said bank
shall not be released from its liability under these presents by an exercise by
the Employer of the liberty with reference to the matters aforesaid or by reason
of time being given to the Contractor or any other forbearance, act or
omission on the part of the Employer or any indulgence by the Employer to
the Contractor or of any other matter or things whatsoever which under the
law relating to surities would but for this provision have the effect of so
releasing the Bank from its such liability.
6. It shall not be necessary for the Employer to proceed against the contractor
before proceeding against the Bank and the Guarantee herein contained
shall be enforceable against the bank notwithstanding any security which the
Employer may have obtained or obtain from the Contractor shall at the time
when proceedings are taken against the bank hereunder be outstanding or
unrealised.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
51
7. We, the said Bank lastly undertake not to revoke this Guarantee during the
currency except with the previous consent of the Employer in writing and
agree that any change in the constitution of the Contractor or the said Bank
shall not discharge our liability hereunder.
8. Our liability under this bond is restricted to Rs._______________ and it will
remain till the __________________, unless an action to enforce the claim
under the guarantee is filed against us before that date all your rights under
the said Guarantee shall be forfeited and we shall be relieved and discharged
for all liability thereunder.
Dated this _____ the day of_________ 20__.
For and on behalf of the Bank
Date :
The above guarantee is accepted by
For & on behalf of the Employer
(Name and Designation)
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
52
PROFORMA FOR AFFIDAVIT FOR
PRESERVATION OF MANGROVES
(On Stamp Paper of Rs.100/-)
1. On behalf of ________________________________ (Name of Agency) having
its office situated at ________________________________ (Address of Agency)
I, Shri/Smt. ______________________ (Name of person signing affidavit),
authorized signatory, hereby state that we are aware of the directives of
Maharashtra Coastal Zone Management Authority (MCZMA) under section 5
of the Environmental (Protection) Act, 1986 read with provision of CRZ-1991
(as amended from time to time). The Hon’ble High Court in PIL No.3246 of
2005 has issued directions for Preservation of Mangroves. I am aware of
these directions. Further, I undertake to comply these directions in its letter
and spirit while executing the work to stop any destruction or denudation of
mangroves and take necessary care for their preservation applicable in and
around coastal areas of Navi Mumbai in Thane and Raigad District. We are
also aware that in case of failure by us to comply with the above directives,
we may be prosecuted by MCZMA under Section 15 of the Environmental
(Protection) Act, 1986.
2. We further state that we will strictly follow the above directives, (as amended
from time to time), while carrying out the work of _______________________
(Name of Work) awarded by CIDCO vide C.A.No. ____________________.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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3. We further indemnify and keep indemnified CIDCO, its officers from all
liabilities, consequences arising in future due to the violation of the any of the
directives (as amended from time to time) by us.
Signature
(Name)
Seal of the Firm
Witness
1. Name
Signature
Address :
2. Name
Signature
Address :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
54
PROFORMA OF AGREEING TO
GENERAL CONDITIONS OF CONTRACT 1. It is hereby agreed that the General Conditions of Contract comprising
condition Nos. 1 to 71.1, Annexure ’A, ‘B’ & ‘C’, Appendix I to Sub
Clause 67.4 and Appendix II to Sub Clause 67.4 part constituting the
contract and I/We agree to abide by the conditions therein.
2. I/we have read and understood the said General Conditions of Contract
with the Annexures and Appendix and my/our signature/s hereunder
amounts to my/our having signed the above referred General Conditions
of contract as forming part of this contract.
This is to confirm that I have read all the General Condition of the contract and
understood the same.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
Name of work :
C.A.NO. :
Realignment of 36.0 M wide road in Sector-5, near existing ROB at
Dronagiri.
06/CIDCO/EE(DRON-I)/2011-12
Name of work :
C.A.NO. :
Realignment of 36.0 M wide road in Sector-5, near existing ROB at
Dronagiri.
06/CIDCO/EE(DRON-I)/2011-12
1604
��������� ��
1608
7
(Sl.Pg.No.55 to 170)(Sl.Pg.No.55 to 170)
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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NOTES AND PREAMBLES TO SCHEDULE OF RATES AND QUANTITIES (SCHEDULE ‘A’)
NOTES & PREAMBLES :
(A) On method of measurement and other relevant matters.
(B) Drafting of Schedule of Rates and Quantities.
(C) Time of Completion.
(D) Deduction of Income Tax.
(E) Deduction of Contract Sales Tax/Turn over tax/Works Contract Tax.
(A) METHOD OF MEASUREMENT AND OTHER RELEVANT MATTERS
1.0 General :
All works shall be measured net as completed. No allowance shall be
made for large or small quantities, narrow width, easy access or difficult
positions or other exceptional circumstances. Any work executed over
and above the dimensions given in drawings or sketches provided by the
Engineer or written instructions by the Engineer shall be ignored and no
payment shall be made for such extra work. In other words, payment
shall be made for authorized works only.
1.1 Tolerance : Dimensions shall be measured to the nearest 0.01 M. Area
shall be worked out to the nearest 0.01 M2 and volume (cubic contents)
shall be worked out to the nearest 0.01 M3.
1.2 Transport : Distance shall be measured by the shortest practicable route
as approved by the Engineer.
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1.3 Full Provisions : The rates inserted by CIDCO against various items of
work detailed in various parts of Schedule shall be deemed to include
every allowance necessary, without extra measurement or charge for
meeting the requirement of various components/parts of the contract
documents (viz. particular Specifications, B & C Standard Specifications,
B & C Schedule of rates, Special Conditions, Preambles and notes to
Schedule of items, description of Schedule of items which shall all be
read together and any or all of the following unless specifically provided
for the contrary.
a) Compliance with all the conditions of contract including General
Conditions of Contract, Schedule of Quantities, Particular
Specifications, Drawings including notes thereon, Specifications in
Standard Specifications of B&C Department, relevant Indian Standard
where applicable. However, in case of any discrepancy between
drawing and tender, the tender item and specification shall prevail.
b) All labour, materials, tools and plants, equipment’s and transport, which
may be required in preparation for and in the full and entire execution
and completion of the works including waste in materials, carriage and
cartage, carrying in, return of empties, hoisting, setting, fittings in
position.
c) Local conditions: Nature of works, local facilitates for supply of labour
and materials, accessibility’s to sites and all other matters, affecting the
execution and completion of the works.
d) Duties etc : Payment of any Octroi, Terminal Tax, Sales Tax, Royalty,
Turnover Tax, Contract Sales Tax, Toll Tax, Ground Rent, Environmental
Cess or any duties on materials obtained for the works and any duties in
respect of patent rights. Cess as per BPMC Act and its amendments.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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e) Supervision : Competent supervision of the work.
f) Labour : Reasonable terms and conditions of employment, liability to
pay compensation, wages as per statutory enactment’s, temporary
accommodation, sanitation etc. compliance with Contract Labour Act.
g) Water: Provision of all water required including temporary plumbing
and connection.
h) Temporary Workshops, Stores, Office, Labour Camps etc. : Provisions
of such structures required for efficient execution of the works and
removing and cleaning up site on completion of works.
i) Precaution against risk : Precautions to prevent loss or damage from all
or any risk, insurance of sheds or any temporary accommodation
provided by CIDCO, watching & lighting, provisions pertaining to the
General Conditions of Contract.
j) Notices, Fees etc. : Compliance with statutory provisions of regulations
and/or bye-laws of any local authority including NMMC and/or any
public service company or authority affected by the works.
k) Setting the works including all apparatus required.
l) Site Drainage: Removal of all water that may accumulate due to
springs, sub soil water, flood/tides and any other causes on the site
during the progress of the work.
m) Execution of work in workmanlike manner, facilities for inspection etc.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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n) Rectification of Bad Work : Rectification and/or removal and
reconstruction of any work which (as decided by the Engineer) has been
executed with unsound or imperfect materials or unskilled workmanship
or of a quality inferior to that contracted for, whether during
construction or reconstruction prior to the expiry of the Defect Liability
period.
o) Responsibility for damage and loss of all construction materials etc., at
the site until handing over to CIDCO.
p) Removal of Rubbish: Removal of rubbish and debris and cleaning of
any dirt before handing over of all completion works.
q) Cleaning site and works : Removal by the Contractor off the site, of any
tools, plants and materials and removal of splashes of asphalt leaving
the whole site neat and tidy.
r) Completion: Completing the work to the satisfaction of the Engineer on
or before the date of completion.
s) Difficult position: Accessibility or otherwise to site, easy or difficult
positions in works.
t) Errors: Rectification of all errors to the satisfaction of Engineer.
u) Curved work etc. : Work of any quantity, size or shape whether level,
inclined, curved, battered etc.
v) Maker’s Instructions: Compliance with maker’s instructions in the case
of proprietary articles, factory made goods of precast items.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
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w) Waste: All waste, laps, seams, joints (rough or fair cuttings)
straight/raking, circular and making good.
x) Artificial Light: To include all lighting/kerosene or electric power as the
case may be when need arises for use of lighting while carrying out
works.
y) Construction of approaches to the site of work. Making arrangement
for proper access to works in the form of stairs, ladders, lifts, etc. as
ordered by the Engineer-in-charge for proper supervisions, testing and
or inspection of works.
z) All the expenses required towards testing of materials and/or works. All
expanses towards contractor’s all risk insurance policy
(B) BRIEF NOTES ON DRAFTING OF SCHEDULE OF RATES AND
QUANTITIES
2.0 The tender has been drafted on the basis of pre-priced schedule of rates
and quantities for different types of items.
2.1 All the tender items are generally priced as per schedule of rates of
Public Works Department of Thane Division for the year 2010-11
and/or CIDCO Schedule of rates for the year (2010 – 11).
2.2 The Contractors are requested to work out their own rates based on the
detailed description of Schedule ‘A’ items, the specifications and
drawings and finally arrive at the cost of the work in the appropriate
place. The contractor shall insert percentage cost over CIDCO’s cost to
arrive at the contract value for the work.
(C) TIME OF COMPLETION
3.0 The period of completion of works enumerated under Schedule ‘A’ shall
be as mentioned in Annexure ‘A’ from the date of placing the work
order or date of handing over the site whichever is earlier.
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(D) DEDUCTIONS OF INCOME TAX
4.0 Deduction of Income Tax shall be at the rates stipulated by Income Tax
authorities and the amounts shall be deducted from every running bill
submitted by contractor.
(E) DEDUCTION OF CONTRACT SALES TAX/TURNOVER TAX
5.0 The contractors are required to produce their registration for contract
sales tax/turnover tax/works contract tax & cess tax to the department
before releasing the 1st Monthly Payment for the work executed by
them, failing which, no payment shall be released.
(F) TAXES & DUTIES
6.0 As per Clause No. 70.2 of General Conditions of Contract.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
177
Name of Work : Realignment of 36 m wide road in Sec-5, Near Existing ROB at
Dronagiri.
C.A. No. : 06/CIDCO/EE(DRON-I)/2011-12
SCHEDULE – “A”
PART – I : ROAD
Sr. No.
Description of Item Quantity Rate Unit Amount
1) Excavation for roadways in all types
of soil, soft murum, hard murum,
hard murum with boulders, in all
conditions and nature, including
clearing and stripping of the area,
removal of vegetation, shrubs, taking
spot levels, excavating to required
depth, line, level and slope, leveling
and dressing and consolidating the
excavated surface, dewatering by all
means upto any extent of water
accumulated from any source,
sorting out and stacking serviceable
and unserviceable materials etc.
complete including conveying the
excavated material with all lifts and
upto a lead of 50 mtr & its spreading
or stacking as directed, etc.
complete.
Note : All payments towards the
royalty, fees, taxes etc. shall be borne
by the contractor.
250.00 175.35 Cum 43837.50
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
178
Sr. No. Description of Item Quantity Rate Unit Amount
2) Excavation for foundation / pipe
trenches in slush muddy / marshy /
slushy / soil, including use of poclain,
labour for dewatering during
execution including removing the
excavated material up to a distance
of 50 mtrs. and lifts as below,
stacking and spreading as directed,
preparing the bed by cleaning the
mux, labour required for execution
for shuttering item but excluding back
filling etc. complete. Providing and
fixing shuttering shall be paid
separately.
250.00 321.70 Cum 80425.00
3) “Providing earthwork in embankment
with approved materials obtained
from Contractors own source
including all leads and lifts, laying in
layers of 20 to 30cms in thickness,
breaking clods, dressing to the
required lines, curves, grades, and
section with watering & compacting
with vibratory power roller etc.
complete.
Notes:-
1. All payments towards the royalty,
fees, taxes etc. shall be borne by
the contractor.
30825.00 338.34 Cum 10429330.50
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
179
Sr. No. Description of Item Quantity Rate Unit Amount
2. The Environmental cess shall be
recovered at Rs.1/m3 of gross
volume computed without
deductions as mentioned for the
Monthly Payment or Final Bills.
3. P.D. Tests shall be carried out @
one test comprising of 3
specimens average result per
1000 m2 area.
4. Compaction upto 95% Modified
P.D. and the laboratory soil dry
density shall be not less than 1.6
g/cc. at Optimum moisture
content.
5. The gross volume of the
embankment shall reduced by
5% for Monthly Payment and 1%
for Final Bill payments.
4) Providing earthwork in embankment
with approved materials obtained
from cutting, including all leads and
lifts, laying in layers of 100 to 120
cms in thickness, breaking clods,
dressing to the required lines, curves,
grades, and section with watering
and compacting with static rollers etc.
complete.
NOTES :-
1. All payments towards the royalty,
fees, taxes etc. shall be borne by
the contractor.
1505.00 226.29 Cum 340566.45
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
180
Sr. No. Description of Item Quantity Rate Unit Amount
2. The Environmental cess shall be
recovered at Rs.1/m3 of gross
volume computed without
deductions as mentioned for the
Monthly Payment or Final Bills.
3. For Embankment of any height
with watering and compaction
without P.D. but laying in layers
of 100 to 120 cms and the
laboratory soil dry density shall
be not less than 1.52g/cc. at
Optimum moisture content. (In
water logged areas)
4. The gross volume of the
embankment shall reduced by
15% for Monthly Payment and
10% for Final Bill payments after
one lapse of monsoon.
5) “Providing earthwork in embankment
with approved materials obtained
from Contractors own source
including all leads and lifts, laying in
layers of 20 to 30cms in thickness,
breaking clods, dressing to the
required lines, curves, grades, and
section with watering & compacting
with vibratory power rollers etc.
complete.
12755.00 338.74 Cum 4320628.70
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
181
Sr. No. Description of Item Quantity Rate Unit Amount
NOTES:-
1. All payments towards the royalty,
fees, taxes etc. shall be borne by
the contractor.
2. The Environmental cess shall be
recovered at Rs.1/m3 of gross
volume computed without
deductions as mentioned for the
Monthly Payment or Final Bills.
3. P.D. Tests shall be carried out @
one test comprising of 3
specimens average result per
1000 m2 area.
4. Compaction upto 97% Modified
P.D. and the laboratory soil dry
density shall be not less than
1.75 g/cc. at Optimum moisture
content.
5. The gross volume of the
embankment shall reduced by
5% for Monthly Payment and 1%
for Final Bill payments.
6) Providing & laying granular sub-base
(GSB) as per clause 401 of
M.O.R.T.&H (2001) specifications of
specified grading (Table 400-1 or
400-2) in specified thickness in
layers. The item to include premixing
the materials in plant, transportation
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
182
Sr. No. Description of Item Quantity Rate Unit Amount
to site, spreading in uniform layers
with motor grader on a prepared
subgrade, compacting with vibratory
rollers till 98% of the maximum dry
density (IS 2720 part-8) is achieved
etc. Complete. The rate includes for
tests on completion of each GSB
layer. The strength of each GSB layer
shall be evaluated by conducting
CBR (IS 2720 Part 16 & 31) or Plate
load test using 750mm dia. Plate, (IS
9214) for obtaining equivalent CBR
value @ one test per 3000 m2
compacted surface area as per the
Grading. The item includes for all
necessary material, labour,
diversions, taxes, royalty, cess etc
complete.
a) For GSB-III of close-graded GSB
material with minimum CBR
value of 20% (As per IS 9214-
1979) to be obtained on top of
the compacted layer. (Lower sub-
base)
2551.00 723.25 Cum 1845010.75
b) For Grading-II of close-graded
GSB material with minimum CBR
value of 25% (As per IS 9214-
1979) to be obtained on top of
the compacted layer.
(Intermediate sub-base)
2551.00 688.40 Cum 1756108.40
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
183
Sr. No. Description of Item Quantity Rate Unit Amount
c) For GSB-I of close-graded GSB
material with minimum CBR
value of 30% to be obtained on
top of the compacted layer.
(Upper sub-base).
2551.00 683.10 Cum 1742588.10
7) Providing & laying Granular Base of
Wet Mix Macadam (WMM) as per
clause 406 of M.O.R.T.&H (2001)
specifications of specified grading
(Table 400-11) in specified thickness
in layers. The item to include
premixing the materials in plant,
transportation to site, spreading in
uniform layers with paver on a
prepared sub-base, compacting with
vibratory rollers till 98% of the
maximum dry density (IS 2720 Part-
8) is achieved etc complete. The rate
includes for tests on completion of
each WMM layer. The strength of
each WMM layer shall be evaluated
by Plate load test with 750 mm dia
plate. (IS 9214) for obtaining
equivalent CBR value @ one test per
3000 m2 compacted surface area as
per the Grading. The item includes
for all necessary material, labour,
diversions, taxes, royalty, cess etc
complete. (CBR – 60 on WMM)
3222.00 1025.50 Cum 3304161.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
184
Sr. No. Description of Item Quantity Rate Unit Amount
8) Providing and applying low viscosity
liquid bituminous material such as
bitumen emulsion or cut back or
road tar complying to relevant IRC/IS
code of approved type and grade by
a self propelled or towed bitumen
pressure sprayer as per clause No.
502 of Specifications for road and
bridge works (M.O.R.T.& H.,2001).
The item includes for preparation of
the base, application of the prime
coat, curing, relevant tests for quality
control as enumerated in table 900-
4, diversion of traffic, etc. complete.
The rate shall include for all labour,
materials, machinery, transportation,
taxes etc. complete”
a) For low porosity surfaces such as
WMM/WBM at an application
rate of 0.6 to 0.9 kg/sqm.with
kinematic viscosity of primer at
60 degree ranges between 30-
60 centistokes
21480.00 32.30 Sqm 693804.00
9) Providing and constructing
Bituminous Bound Macadam (BBM)
surface 75 mm thickness including
supplying all materials including
metal, bitumen etc. spreading 40
21480.00 176.65 Sqm 3794442.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
185
Sr. No. Description of Item Quantity Rate Unit Amount
mm hand broken trap metal 9 cum
per 100 m2 and 20 mm trap metal
at the rate of 1.5 cum/100 sqm.,
heating and spreading bitumen
(excluding tack coat) at 250 kg./100
m2, spreading 12 mm size key
aggregate at the rate of 1.8
cum/100 sqm and compaction with
vibratory roller complete. Grade of
bitumen shall be 60/70.
10) Providing and applying low viscosity
liquid bituminous material such as
bitumen emulsion complying to IS
8887 of approved type and grade by
a self propelled or towed bitumen
pressure sprayer as per clause No.
503 of Specifications for road and
bridge works (M.O.R.T.& H., 2001).
The item includes for preparation of
the base, application of the tack coat,
curing, relevant tests for quality
control as enumerated in table 900-
4, diversion of traffic, etc. complete.
The rate shall include for all labour,
materials, machinery, transportation,
taxes etc. complete.
a) For Normal bituminous surface
at an application rate of 0.2 to
o.25 kg/sqm.
21480.00 12.50 Sqm 268500.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
186
Sr. No. Description of Item Quantity Rate Unit Amount
11) Providing and laying 20 mm thick
hot mix hot laid pre-mix Seal Coat
(SC) composed of 11.2 mm to .09
mm (type a) or 13.2 mm to .09 mm
(type b) aggregate using 60/70
grade bitumen @ 22kg/10 sqm as
per MORT&H-512 including
supplying all materials, heating
bitumen, mixing bitumen and chips
in hot mix plant, laying the seal coat
by sensor paver finisher including
compaction with vibratory roller etc.
complete. The grade of bitumen
shall be 60/70. The rate is inclusive
of all types of taxes.
(Excluding tack coat)
21480.00 118.55 Sqm 2546454.00
12) Laying concrete pipes of IS NP-2
class of 300mm dia. diameter in
proper line, level and slope including
necessary collars, testing, excavation,
laying, fixing with collars in cement
mortar 1:1 and refilling the trench
etc. complete.
120.00 426.00 Rmt 51120.00
13) Providing PCC precast factory made
kerb stone of 500x400x150 mm size
in M-25 grade of concrete using
design mix with minimum cement
content as per IS 456 for moderate
402.00 531.95 Rmt 213843.90
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
187
Sr. No. Description of Item Quantity Rate Unit Amount
exposure condition including fixing in
PCC 1:2:4, 250 mm thick, filling the
joint with CM 1:3, pointing in CM
(1:3) on exposed face etc. complete
including painting in two coats of oil
paint to exposed surfaces, one coat
of primer and excavation and
disposal of excavated material,
making good the road etc. complete.
The rate is inclusive of all types of
taxes.
14) Providing & fixing parabolic shape
RCC precast-factory made M25
Grade kerb stone using design mix
with minimum cement content as per
IS 456 of size 500/200/850 mm as
per detailed design and drawing
including excavation, fixing in PCC of
M-15 grade bed 100 mm thick
including side concreting, filling joints
in cement mortar (1:3) disposal of
excavated material, including
painting in two coats of oil paints
and one coat of primer to exposed
faces, transportation to site, labour,
providing & fixing steel reinforcement
@ 60 Kg/M3, etc. complete. The
rate inclusive of all type of taxes.
2000.00 1042.38 Rmt 2084760.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
188
Sr. No. Description of Item Quantity Rate Unit Amount
15) Providing & laying in situ cement
concrete M-20 of trap metal for
foundation and bedding, including
bailing out water manually,
formwork, compacting and curing.
32.00 4680.00 Cum 149760.00
16) Providing and Constructing B.B.
masonry valve chamber with 15 cm
thick 1:3:6 proportion PCC bedding,
excluding excavation, B. B. Masonry
in C.M. 1:5 Proportion precast RCC
frame and cover, etc. complete as
directed by Engineer-in-Charge.
(Note : Wall thickness : 0.23 M for
depth of 1.2 M and 0.35 M for
balance depth exceeding 1.2 M)
15.00 4100.00 No. 61500.00
17) Conducting lab CBR test as per IS-
2720 (Part-16) 1987 The item shall
includes necessary cost for sample
collection and transporting it to soil
testing lab. The rate includes for
testing of minimum 3 specimen. If
the test results of initial 3 specimen
deviate more than that specified in
Table 2 of clause No. 3, 4, 6, 4 of
IRC 37 (2000) then additional 3
specimen shall be got tested at no
extra cost. The rate includes for all
necessary ancillary tests mentioned in
appendix “A” of IS 2720 (Part-16)
7.00 2460.00 No. 17220.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
189
Sr. No. Description of Item Quantity Rate Unit Amount
viz. Proctor density test, swell
pressure test etc. The appropriate
surcharge Wt. shall be provided
while testing the specimen. The item
shall include all cost of necessary
excavation at site. The test results
shall be submitted in report form with
observation sheet graph, tabular
form and inference it any.
TOTAL 33744060.30
Total carried over to summary of Schedule “A” on Sl.Pg. No. 201.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
190
Name of Work : Realignment of 36 m wide road in Sec-5, Near Existing ROB at
Dronagiri.
C.A. No. : 06/CIDCO/EE(DRON-I)/2011-12
SCHEDULE – “A”
PART – II : S.W. DRAIN
Sr. No. Description of Item Quantity Rate Unit Amount
1) Excavation for foundation to any
depth in all types of earth, soils of all
types such as sand, gravel, slush,
soft murum, hard murum with or
without boulders including shoring
and strutting whichever necessary
including disposing off the surplus
materials within 50m, beyond the
work site, stacking and spreading as
directed. The item includes heavy
dewatering by using pumps or
manually, shoring, strutting and
preparing the bed for foundation
and necessary back filling etc.
complete.
NOTE :
All payments towards the royalty,
fees, taxes etc. shall be borne by the
contractor.
475.00 175.35 Cum 83291.25
2) Excavation for foundation / pipe
trenches in slush muddy / marshy /
slushy / soil, including use of
poclain, labour for dewatering
55.00 321.70 Cum 17693.50
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
191
Sr. No. Description of Item Quantity Rate Unit Amount
during execution including removing
the excavated material up to a
distance of 50 mtrs. and lifts as
below, stacking and spreading as
directed, preparing the bed by
cleaning the mux, labour required
for execution for shuttering item but
excluding back filling etc. complete.
Providing and fixing shuttering shall
be paid separately.
3) “Providing earthwork in
embankment with approved
materials obtained from Contractors
own source including all leads and
lifts, laying in layers of 20 to 30cms
in thickness, breaking clods, dressing
to the required lines, curves, grades,
and section with watering &
compacting with vibratory power
roller etc. complete.
Notes:-
1. All payments towards the royalty,
fees, taxes etc. shall be borne by
the contractor.
2. The Environmental cess shall be
recovered at Rs.1/m3 of gross
volume computed without
deductions as mentioned for the
Monthly Payments or Final Bills.
1750.00 338.34 Cum 592095.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
192
Sr. No. Description of Item Quantity Rate Unit Amount
3. P.D. Tests shall be carried out @
one test comprising of 3
specimens average result per
1000 m2 area.
4. Compaction upto 95% Modified
P.D. and the laboratory soil dry
density shall be not less than 1.6
g/cc. at Optimum moisture
content.
5. The gross volume of the
embankment shall reduced by
5% for Monthly Payment and 1%
for Final Bill payments.
4) Providing and laying dry trap metal
soling 23 cm. thick including hand
packing with metal, rubble chips,
application of required murum/stone
dust blindage and compaction
including watering etc. complete with
all leads, including necessary heavy
dewatering either mechanically or
manually etc. complete.
360.00 417.00 Cum 150120.00
5) Providing stone columns including
boring of required 650 mm dia.
Providing & laying tubular gabion,
filling the sand etc. complete.
(The rate is inclusive of boring
required for stone columns)
940.00 1799.44 Rmt 1691473.60
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
193
Sr. No. Description of Item Quantity Rate Unit Amount
6) Providing & laying in position geocell
CE121 for bottom surface and CE
153 Netlon of 0.38M width making
Geo Boxes of size 600x600x380mm
complete.
a) CE 121 1325.00 342.19 Sqm 453401.75
b) CE 153 2150.00 312.85 Sqm 672627.50
7) Providing and fixing polymer /
Bamboo bodking with ropes as per
drawing for fixing and jointing of
Netlon CE153 and as directed by
EIC etc. complete.
4350.00 31.30 No. 136155.00
8) Providing & laying well graded
machine crust aggregate etc
complete.
305.00 593.00 Cum 180865.00
9) Compacting the top surface well
graded filled in boxes by mechanical
means etc. complete.
810.00 14.00 Sqm 11340.00
10) Providing and laying in situ Ready
Mix Cement Concrete M20 grade
using design mix with minimum
cement content as per IS 456 with
maximum water cement ratio 0.45
using maximum 25/30 mm size and
down trap metal for foundation and
bedding/PCC Raft with all labours,
materials, plant & equipments,
shuttering form work, staging,
260.00 5846.00 Cum 1519960.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
194
Sr. No. Description of Item Quantity Rate Unit Amount
including transporting, placing
vibrating with mechanical vibrator,
finishing and curing etc. complete.
The item also includes heavy
dewatering by using pumps or
manually. The cost also includes all
types of taxes, sales tax, insurance,
cess levied by local authority etc.
complete.
11) Providing and casting RMC M20
grade of concrete using design mix
with minimum cement content as per
IS 456 in situ controlled concrete using
maximum 25mm / 30mm size and
down graded aggregate of trap metal
for PCC abutments, walls, pardi,
hatnches etc. as per detailed drawing,
with maximum water cement ratio of
0.45 (for severe condition) as directed,
with contractors labours, materials,
plant & equipments, scaffolding,
shuttering, form work, staging
including transporting, placing
vibrating with mechanical surface
vibrator and all lifts and leads, curing,
adding required dosages (as per the
manufacturers recommendations) of
approved plasticiser as admixtures
62.00 7867.50 Cum 487785.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
195
Sr. No. Description of Item Quantity Rate Unit Amount
(excluding cost of reinforcement). The
item includes heavy dewatering to any
extent by any means. The cost also
includes all types of taxes, exice duty,
sales tax, insurance, cess levied etc.
12) Providing and casting RMC M30
grade of concrete using design mix
with minimum cement content as per
IS 456 in situ controlled concrete using
maximum 25mm / 30mm size and
down graded aggregate of trap metal
for RCC raft foundation as per
detailed drawing, with maximum
water cement ratio of 0.45 (for severe
condition) as directed, with contractors
labours, materials, plant &
equipments, scaffolding, shuttering,
form work, staging including
transporting, placing vibrating with
mechanical surface vibrator and all
lifts and leads, curing, adding
required dosages (as per the
manufacturers recommendations) of
approved plasticiser as admixtures
(excluding cost of reinforcement). The
item includes heavy dewatering by
using pumps or manually. The item
includes performing NDT as directed.
The cost also includes all types of
taxes, sales tax, insurance, cess levied
by local authority etc. complete.
200.00 6189.00 Cum 1237800.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
196
Sr. No. Description of Item Quantity Rate Unit Amount
13) Providing and casting M30 grade of
concrete using design mix with
minimum cement content as per IS
456 in situ controlled concrete using
maximum 25mm / 30mm size and
down graded aggregate of trap metal
for RCC abutments, walls, pardi,
haunches etc. as per detailed drawing,
with maximum water cement ratio of
0.45 (for severe condition) as directed,
with contractors labours, materials,
plant & equipments, scaffolding,
shuttering, form work, staging
including transporting, placing
vibrating with mechanical surface
vibrator and all lifts and leads, curing,
adding required dosages (as per the
manufacturers recommendations) of
approved plasticiser as admixtures
(excluding cost of reinforcement). The
item includes heavy dewatering to any
extent by any means.
345.00 8185.00 Cum 2823825.00
14) Providing and casting M30 grade of
concrete using design mix with
minimum cement content as per IS
456 in situ controlled concrete using
maximum 25mm / 30mm size and
down graded aggregate of trap metal
for approach slab and RCC slab etc.
as per detailed drawing, with
250.00 7962.00 Cum 1990500.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
197
Sr. No. Description of Item Quantity Rate Unit Amount
maximum water cement ratio of 0.45
(for severe condition) as directed, with
contractors labours, materials, plant &
equipments, scaffolding, shuttering,
form work, staging including
transporting, placing vibrating with
mechanical surface vibrator and all
lifts and leads, curing, adding
required dosages (as per the
manufacturers recommendations) of
approved plasticiser as admixtures
(excluding cost of reinforcement). The
item includes heavy dewatering to any
extent by any means. The cost also
includes all types of taxes, excise duty,
sales tax, insurance, cess levied etc.
15) Providing and placing, fixing in all
RCC item of foundation, sub-
structure and superstructures,
M.S./H.Y.S.D./T.M.T. of various
diameters as per IS 432 (latest
version) of approved make for
reinforcement in any position as per
detailed drawing or as directed for
all diameters including, cutting,
bending in shape, fixing in position
with galvanised binding wire of 17
guage or tack welding as per IS
9417 (latest version) as directed etc.
complete including dewatering using
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
198
Sr. No. Description of Item Quantity Rate Unit Amount
pumps or manually during placing
reinforcement and keeping dry
during concreting of RCC members.
The cost also includes all types of
taxes, excise duty, sales tax,
insurance, cess levied by local
authority etc. complete.
Note :- The quantity to be measured
and paid for this item shall not
include wastage in cutting. Actually
installed and placed in position steel
shall be paid for including hooks,
laps, bends, pins and chairs. No
separate payment shall be made for
binding wire or tack welding.
a) Mild Steel 0.00 36331.00 MT 0.00
b) HYSD Steel/TMT Steel 52.00 47749.00 MT 2482948.00
16) Providing and fixing 100 mm dia
AC/PVC pipes for weep holes,
staggered as per drawing or as
directed by Engineer-In-Charge etc.
complete.
360.00 89.00 Rmt 32040.00
17) Providing trap rubble filling behind
the walls / abutments / returns
including filling voids with gravel,
hand packing and compacting the
rubble etc. complete.
700.00 347.00 Cum 242900.00
18) Providing and fixing precast RCC
slab of 100 mm thickness in M-25
400.00 1368.65 Sqm 547460.00
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
199
Sr. No. Description of Item Quantity Rate Unit Amount
grade of concrete using design mix
with minimum cement content as per
IS 456 as per detailed design and
drawings or as directed with fixing of
3 mm thick M.S. plate around the
slab for inspection opening for S. W.
Drain including compaction, curing
and finishing uneven and honey
combed surface with cement mortar
1:3 of sufficient minimum thickness
to give a smooth and even surface
including reinforcement. The rate is
inclusive of all types of taxes.
19) Providing and fixing precast RCC
beams of size 150x150 mm over SW
Drain in M-25 grade of concrete
using design mix with minimum
cement content as per IS 456 as per
detailed design and drawings or as
directed including steel centering,
compaction, curing and finishing
uneven and honey combed surface
with cement mortar 1:3 of sufficient
minimum thickness to give a smooth
and even surface including providing
& fixing steel reinforcement @ 60
Kg/M3. The rate is inclusive of all
types of taxes.
950.00 201.85 Rmt 191757.50
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No. C.A.NO. 06/CIDCO/EE(DRON-I)/2011-12
200
Sr. No. Description of Item Quantity Rate Unit Amount
20) Disposal of excavated material
beyond 0.5 km and upto 1 km lead
(dumping yard) including loading,
unloading, transporting by
mechanical or other means,
stacking, spreading, leveling as
directed by Engineer-in-charge etc.
complete beyond initial lead of 50m.
410.00 55.15 Cum 22611.50
21) Providing expansion joints in R.C.C.
framed structure (interior columns)
with plain premoulded filler 25 mm
thick, including fixing T.W. battens
both faces and complete as directed.
45.00 1577.00 Sqm 70965.00
TOTAL 15639614.60
Total carried over to summary of Schedule “A” on Sl.Pg. No. 201.
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Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB
at Dronagiri.
SUMMARY OF SCHEDULE - 'A' PART DESCRIPTION AMOUNT
I ROAD WORKS 3,37,44,060.30
II S.W.DRAIN 1,56,39,614.60
(A) TOTAL OF SCHEDULE “A” RS. 4,93,83,674.90
(B) ADD/SUBTRACT (+/-) ______% QUOTED RS. BY THE CONTRACTOR TO REFLECT THE TOTAL COST.
(C) GRAND TOTAL (A) +/- (B) RS.
(Rupees _____________________________________________________________
_______________________________________________________________ Only)
NOTES :
1) It is compulsory to fill the amount both in words and figures. 2) This is to confirm that I have read carefully instruction No. 3.8.1 to 3.8.4 on
Sl.Pg.No. 12 of the Tender and I understand that my tender is liable to be rejected if I fail to submit the offer in accordance with the various provisions and do not comply with the stipulations.
3) I, understand that my tender is liable to be rejected if I fail to fill the amount both in words and figures.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
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A N N E X U R E - ‘A’
Name of Work : Realignment of 36.0 M wide road in Sector-5, near existing ROB
at Dronagiri.
Revised G.C.C.
Clause No.
1.1(a)(iv) The Engineer for the Contract : Name : Shri. Manjit Singh Designation : Executive Engineer (Dron-I)
43.1 Time for completion (inclusive of monsoon)
A. Contract as whole : 12 (Twelve) Months (including Monsoon)
B. Sections (Part of Groups of Items) i) ii)
: Not Applicable
49.1 Defect Liability period i) ii)
: : :
12 (Twelve) Months
49.4 Percentage to be charged as
supervision charges for the work
got executed through other means
: 24.5%
60.10 The rate of interest applicable for
payment delayed
: 6% p.a.
70.1 i) Centre for Price Variation Indices
: Mumbai
ii) Price Variation Clause Factors
:
PL : 17%
PM : 78%
PF : 05%
TOTAL : 100%
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iii) Base Materials and Base Rates Applicable for the price variation
clause shall be as under:
Base Rate of Cement : Rs. 6,325.00 per M.T.
Base Rate of Bitumen 60/70 : Rs. 44,281.00
Base Rate of Mild Steel : Rs. 52,100.00 per M.T.
Base Rate of HYSD Steel : Rs. 52,100.00 per M.T.
Base Rate of TMT Steel : Rs. 52,100.00 per M.T.
Base Rate of POL : Rs. 48.01 / Lit.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
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SCHEDULE ‘B’
(Material to be issued to contractor by CIDCO)
Sr. No.
Particular of Materials
Rate of which material will be issued in
Rs. Ps.
Place of issue
Rate of Recovery in case of misuse or
excess consumption
============== NIL ==============
No material will be supplied by CIDCO
1. This Schedule consists Nil item only.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
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GENERAL SPECIFICATIONS
GENERAL SPECIFICATIONS FOR
CONCRETE PLAIN & REINFORCED / CAST-IN-SITU / READY MIX CONCRETE
Providing and casting in situ concrete of various grades shall be in
accordance with IS : 456-2000 (latest version) and IS : 4926 (latest
version). The specifications for all the allied activities such as mix design,
taking trial mixes, finalizing the mix, acceptance criteria, testing, shuttering,
formwork, transportation, placing, compaction, curing etc. shall be as per
the IS : 456-2000 (latest version), IS : 4926 (latest version) and other
relevant IS standard. Contractor shall follow the specified test frequencies
for all the ingredients including concrete mix as per the IS : 456-2000
(latest version) and IS : 4926 (latest version).
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
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PARTICULAR SPECIFICATIONS (ROAD WORKS)
1.0 GENERAL
The Particular Specifications are to be read in conjunction with the
specifications contained in the description of items of Schedule “A”
specification contained in “Standard Specifications” published by
Buildings and Communications Department of Maharashtra, relevant
Indian Standard Specifications. In case of conflicting provisions in
various documents (except Schedule “A”), the provisions in Particular
Specifications shall take precedence over any other documents.
2.0 CLEARING SITE :
The ground over which the Roads are to be constructed shall be
cleared from all loose, vegetation, bushes, stumps and all other
objectionable materials. Brushwood, stumps, vegetation etc. shall be
cut flush with the ground. Materials obtained from clearing site shall
be disposed off as directed.
3.0 Excavation for roadways to any depth in all types of earth, soils such
as sand, gravel slush, soft murum, hard murum with or without
boulders with all lifts and upto 1.5m depth including disposing off
the surplus materials within 50m. beyond the work site, stacking and
spreading as directed including payment of royalty charges, fees,
taxes etc.
3.1 GENERAL:
Roadway and drainage excavation shall consist of excavation,
removal, conveyance and satisfactory disposed of materials of the
strata covered by the wording of the item for the construction of the
road and its drainage including finishing the surface and the slopes
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to the required grade, lines, levels, curves and sections shown on the
plans or as directed by the Engineer. The item also covers
maintaining the work in finished condition until taken over by the
Department.
3.2 CLEARING SITE:
The land width required for the roadway, gutters, side slopes and
catchwater gutters shall be cleared of all trees having a girth of
30cm (about 1’) and less, brushwood, loose stones, vegetation,
bushes, stumps and all other objectionable materials. The roots of
trees shall be removed to a depth of 30cm (about 1’) below the
surface of the road formation and side slopes and the excavation
filled up with excavated materials in 15cm to 20cm. (about 6” to 8”).
Layers and compacted, Brushwood, stumps, vegetation, etc. shall be
cut flush with the ground. All the materials cleared will be the
property of CIDCO. Useful materials shall be arranged in convenient
stacks along the road boundary or as directed at places within lead
of 50 meters (164’) and handed over to the Department in
convenient sections. Unsuitable materials shall be burnt or otherwise
disposed of by the contractor at his own cost as directed by the
Engineer without crushing any nuisance inconvenience or damage to
the work, property or people in the neighborhood. If the material is
disposed of outside the road land, necessary permission from the
private land owners shall be taken by the contractor and royalty etc.,
if any paid by him without claiming compensation. In all cases, the
materials shall be disposed of in a neat manner.
3.3 SETTING OUT:
After clearing the site, the alignment of the road shall be properly set
out true to lines, curves, slopes, grades and sections as shown on the
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plans by total station by appointing reputed surveyor as directed by the
Engineer. The contractor shall provide all labour and materials such as
lime, string, pegs, nails, bamboos, stones, mortar concrete etc.,
required for setting out, establishing Bench Marks and giving profiles.
The contractor shall responsible for maintaining the B.Ms., profiles
alignment and other stacks and marks as long as they are required for
the work in the opinion of the Engineer. If the contractor defaults in this
respect even after direction by the Engineer within the specified time,
they may be restored by the Engineer at the cost of the contractor.
Levels and sections of the ground shall be taken and recorded in the
presence of the contractor or his authorized representative before the
excavation is started to serve as the basis of measurement. The
contractor or his representative shall sign the book in token of his
acceptance of the level etc. If there is any disagreement, the contractor
shall inform of it in writing to the officer concerned with specific
reference to the sections before starting further work. Once further work
is started, no cognizance of any complaint shall be taken. Merely not
signing of the book shall not be deemed as disagreement.
3.4 CLASSIFICATION OF EXCAVATION:
All the materials encountered in the excavation would be mainly classified in the following groups:
1) Soils of all sorts, sand, gravel, soft murum and other similar soft or loose materials.
2) Hard murum.
3) Hard murum and boulders.
4) Soft rock.
5) Hard rock (blasted).
6) Hard rock (chiseled, wedged or line drilled)
7) Laterite
8) Slush / Marine Clay
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1) Soil of sorts, sand, gravel, soft murum and other similar soft or
loose materials. :
Soils of all sorts, sand, gravel soft, murum, chopan yellow soil. etc.,
shall included all material of earthy nature which can be easily
ploughed or small shingle and gravel which can be easily remove.
Removal of small boulder not exceeding 0.03 cu.m. or 30 litres (about
one c.ft.) accruing in the strata will be included in the rate for this item.
2) Hard murum :
This shall include all kinds of disintegrated rock or shale or indurated
clay free from boulders larger than 003cu.m. or 30 litres (about one
cu.ft.) and can be removed with pick and shovel though not without
some difficulty.
3) Hard Murum & Boulders :
This shall include all kinds of disintegrated rock or shale or indurated
clay interspersed with boulders less than half cubic metre (about half a
cu.yd) and larger than 0.03 cu.m. or 30 litres (approx one c.ft.) which
do not normally need blasting and can be removed with pick, bar,
wedges, and hammer. Boulders bigger than ½ cu.m. will be paid for as
soft or hard rock according as it is soft or hard rock.
4) Soft Rock:
This shall include all materials which is rock or hard conglomerate, all
decomposed and weathered rock, highly fissure rock, old masonry and
also soft rock, boulders bigger than ½ cubic meter with pick, crow bars,
wedges and hammer with some difficulty.
5) Hard rock (chiseled wedged or line drilled):
This shall include all rock occurring in masses which can best be
removed by blasting but which owing to the proximity of structures,
possibility of shattering the rock below or for any other reason should
be cut by a means of cold chisels or wedges or line drilling.
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The classification of the excavation would be decided by the Engineer
and his decisions shall be final and binding on the contractor. Merely
the use of explosives in excavation will not be considered as a reason
for higher classification unless blasting is clearly necessary in the
opinion of the Engineer.
6) Laterite :
This shall include laterite rock soft and hard which can be removed with
Dhokans or blasting. Lateritic murum which has not hardened into
stone shall be classified as hard murum.
7) Slush / Marine Clay :
This items includes clearing the land width of all shrubs, weeds, bushes
etc. the work will also have to be done in the area subject to the tidal
water. The work is to be executed as directed by the Engineer. The slush
(Marine clay) is to be removed on top of hard strata such as murum,
weathered rock, soft rock, hard rock etc., whichever is met earlier,
which is suitable to lay embankment foundation on such suitable strata.
The excavated stuff to be deposited as per direction of Engineer as per
site situation. For excavation in slush Contractor shall use machinery
like mechanical excavators or any other suitable type of mechanical
equipment and other machinery for transporting excavated lush for
speedy execution. For removing slush wherever necessary, if earthen or
rubble bunds are required, the same shall be provided by the
Contractor at his cost as per directions of Engineer.
The classification of the excavation would be decided by the Engineer
and his decisions shall be final and binding on the contractor. Merely
the use of explosives in excavation will not be considered as a reason
for higher classification unless blasting is clearly necessary in the
opinion of the Engineer.
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3.5 CONSTRUCTION METHOD:
Profiles of the section including the road side gutters to be excavated
shall be laid at suitable intervals of 10 m.(about32.8’) to 50m. (about
64) or other intervals directed by the Engineer to conform to the curved
or straight alignment, section grades and side slopes. The lines of cuts
shall be clearly marked and profiles of embankments where excavated
materials are to be used shall be set up with the toe line marked on
each side. The roadway section shall be first excavated with vertical
sides for each lift and the side slopes for that lift shall be excavated in
steps.
These steps shall be smoothened to the required slopes, when the
excavation reaches the road formation. The contractor shall on no
account excavate beyond the slopes or below the specified grade
unless so directed by the Engineer in writing. If excavation is done
below the specified level or outside the section., it shall not be paid for
and the Contractor shall be required to fill up at his own cost such extra
excavation in the road portion with approved materials of the
embankment grade in layer of 15cm. to 20cm. (about 6” to 8”)
watered and fully compacted to attain maximum density laid down for
the embankment in the same agreement elsewhere. The Engineer
may require measurement ridges and deadmen to be left at specified
interval or places and kept intact till ordered to be removed for the
purpose of check measurements. The excavation shall be finished
neatly, smoothly and evenly to the correct lines, curves, grades sections
and side lopes a shown on the plans or directed by the Engineer. The
sub-grade if loose shall be scarified , watered and compacted to the
same density as the embankment. The section, side slopes and
catchwater gutters shall be maintained by the contractor at his own cost
in such a way the formation and gutters will be well drained by
providing necessary diversions. etc. and not damaged due to
obstruction of any drainage. Necessary passages shall be provided for
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leading away seepage, springs, surface flow or rain water safely
without damaging the work. If any damage occurs due to default of the
contractor in this respect, he shall make good the damage at his own
cost. If it is necessary in the execution of the work to interrupt existing
surface drainage, irrigation channels sewers or under drainage,
temporary arrangements shall be provided till such time as is
necessary. The contractor at his own cost shall make good the
interrupted drainage and sewer, etc. unless separately provided in the
tender. Any damage to the existing works or work in hand caused as a
result of his operations or negligence shall be made good by the
contractor at his own cost.
Roadside gutters shall be excavated to the specified sections and shall
be measured along with the main cutting in cubic meters.
Intercepting or catchwater gutters necessary shall be built to the cross-
section, shown on the plans in time to prevent damage to the cuts or
banks.
3.6 DEWATERING:
If water is met with in the excavation due to springs, seepage rain or
other causes it shall be removed by suitable diversions, pumping or
bailing out and the excavation kept dry whenever so required by the
Engineer. Care shall be taken to discharge the water so as not to cause
damage to the work, crops or any property or any inconvenience to the
property holders in the neighborhood. Unless separate provisions is
made in the tender fro dewatering the cost of dewatering shall be
covered by the rate for excavation.
3.7 SLIDES:
If slides occur in the cutting they shall be removed as ordered by the
Engineer. If finished slopes slide into the roadway before the final
acceptance of the work, such slides shall be removed by the contractor
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and shall be paid for at the contract rate for the class of excavation
involved provided the slides are not due to any negligence of the
contactor. The classification of the materials in slides shall conform to
its condition at the time of removal and payment made accordingly
regardless or its prior condition.
Care shall be taken to see that excavation is arranged in a safe way so
that these will be no risk to the work or workmen by slides, falling
materials, boulders and collapsing sides etc.
3.8 PROTECTION:
If there is traffic nearby or if there are towns and villages in the
neighborhood, barricades and/or traffic signals shall be provided day
and night for the duration of the work in such a way as to prevent
accidents. Warning signals shall be displayed at 70m. from the danger
point on both sides to give sufficient warning. If necessary, signalers
shall be stationed at each end to regulate traffic where it is heavy.
Measures shall be taken to see that the excavation does not affect or
damage adjoining structures or property. If there is damage to
property, injury to workers, the members of the public animals etc. due
to the negligence of the contractor, he will be responsible and liable to
all the consequences including compensation.
3.9 DIVERSIONS:
If diversions are necessary for the traffic they shall be provided and
maintained as specified under specification of MORT&H clause 112.
3.10 DISPOSAL OF EXCAVATED MATERIALS:
All the excavated materials shall be the property of the CIDCO where
the excavated material is directed to be used in the construction of the
works for the general grading, plinth filling or embankments, the
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operations shall be arranged in such a manner that the capacity for
cutting, haulage and compaction are nearly the same.
All hard materials such as hard murum, rubble etc. not intended for
filling in foundations, plinth or embankments, shall be stacked neatly
for future use as directed by the ENGINEER within the lead specified.
Unsuitable or surplus materials not intended for use in part of the works
or for reuse shall be disposed of as directed by the ENGINEER.
3.11 MAINTENANCE:
The excavated roadway shall be maintained satisfactorily and protected
by the contractor at his own cost against all damage till it is taken over
by the Department. If any damage occurs, the contractor shall be
responsible to repair it at his own cost.
3.12 ITEM TO INCLUDE:
1) Clearing Site
2) Setting out by total station including necessary labour, material
and fixing reference marks.
3) Diversion unless separately provided in the tender.
4) Dewatering unless separately provided in the tender
5) Protective measures for work, work people, public, animal,
property etc.
6) Excavation to the required lines, curves, section and grades.
7) Conveying the excavated materials including all lifts and lead
upto 50 m. (about 164’), spreading in layers or stacking as
directed and disposing off unwanted materials.
8) All labour, materials and use of equipment and tolls required for
completing the item satisfactorily.
9) Compensation on account of damages, accidents or use of
private lands royalty, etc.
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3.13 MODE OF MEASUREMENT & PAYMENT:
The contract rate shall be for a unit of one cubic metre for the strata
mentioned in the wording of the items of excavation acceptably
completed, limited to the dimensions shown on the plans or as directed
by the Engineer. Excavation shall be measured in its original position by
the taking cross-sections before the work start and after it is entirely
completed. The quantity shall be worked out by the Average End Area
method. The individual dimensions and areas of the cutting shall be
measured correct upto two places of decimals of a metre and square
metre respectively and the quantity worked out correct up to two places
of decimals of a cubic metre.
When the classification of the strata changes, the contractor shall bring
this to the notice of the Engineer who will then verify and if necessary
take levels for the changed strata for purpose of measurement.
The engineer at his option may direct dead-men to be left at such
intervals as he may indicate for purpose of measuring the depths and
other dimensions either for initial measurements or for checking.
Deduction shall be made for these dead-men. These shall be removed
when no longer required and the deduction restored thereafter. If the
dead-men are not removed and used in the work or otherwise disposed
of as directed by the Engineer within 15 days of the date of check
measurement, the Engineer shall have the right to remove then at the
contractor’s cost. If for any reason the dead-men are damaged at the
time of measurement the measuring or check measuring officer shall
estimate the quantity of earthwork at his discretion and such estimate
shall be final.
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4.0 EMBANKMENT CONSTRUCTION : (Sub-grade with 95% P.D.)
Providing earthwork in embankment with approved materials
obtained from the road cutting with all leads including all lifts, laying
in layers of 20 to 30 cms in thickness, breaking clods, dressing to the
required lines, curves, grades, and section with watering and
compacting to 95% of Modified Proctor density with vibratory power
rollers etc. Complete.
4.1 GENERAL :
The work shall include preliminaries of clearing site, setting out and
preparing the ground and thereafter forming embankment for the
road with approved materials obtained from Department land or other
sources, laying them in layers, watering and compacting to the
required density lines, curves, grades, cross section and dimensions
shown on the plan or as directed by the Engineer with due allowance
for shrinkage.
4.2 CLEARING SITE :
The ground over which embankment is to be formed shall be cleared
of all trees, brushwood, loose stones, vegetation, bushes, stumps and
all other objectionable materials, under this item. Roots of trees shall
be grubbed to a depth of at least 15 cm. below the original ground
surface and at least 30 cm. below the formation level whichever is
deeper. The holes dug up for grubbing roots etc. shall be filled with
excavated materials in layers of 15 cm. and compacted. Brushwood,
stumps, vegetation etc. shall be cut flush with the ground materials
obtained from clearing site shall be dealt with according to
specification No. Rd.2.2
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4.3 SETTING OUT :
After the site is cleared, setting out shall be done as laid down in
Specification No. Rd.2.3. Profiles shall be set up with stout poles to
mark the centre and edges of the formation with the top levels of
formation clearly marked by paint or cut and the slopes with string and
pegs at every 80 metres on straight portion and 10 m. or less on
curves or as directed by the Engineer. Toe line may be marked with
pick marks. Longitudinal and cross section levels shall be taken
recorded and checked for measurements and signed by the contractor
or his representative.
All the materials and labour required for this item shall be supplied
and profiles, B.Ms. etc. put up by the contractor. These shall be
covered by the rate.
Profiles, pegs, bench marks and other marks shall be maintained
without any disturbance as long as they are required.
4.4 MATERIALS :
After utilising, for the embankment all the useful and acceptable
materials obtained from the road cutting within the specified leads the
contractor shall obtained additional materials from borrow in
Departmental Land or from other suitable sources. Satisfactory soil
murum or a mixture of soil, sand, murum, gravel, small boulders or
rubble shall normally be acceptable. Soils having dry density less than
1.6 gm./cc. shall not be used in embankments for 95% M.P.D. Soil
having laboratory dry density less than 1.75 gm./cc. shall not be used
in embankments for 98% M.P.D. Only the materials considered
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suitable as above by the Engineer shall be used for the bank. Rejected
materials shall not be put into the bank nor brought to the work site.
Perishable materials such as stumps, pieces of wood, roots, rubbish,
etc. and such other materials as will effect the stability of the
embankment shall not be used. Soils with humus of grass will be
permitted to be used as surface covering for the bank slopes to a
thickness of not more than 30 cm.
The materials required for embankment shall be obtained in any of
the following ways provided the materials is suitable in the opinion of
the Engineer:-
a) From cuttings from nearby sections of the road as directed.
b) From excavation for improving sight distances in nearby curves
as directed.
c) By sectioning any adjacent Nallah or waterways as directed.
d) By excavating cuts to lead water way from the road.
e) By excavating side drains and catch-water drains.
f) From waste land outside the road land.
g) From humps above the general ground level within the road
land.
h) From land acquired temporarily if any, outside the road land
i) From borrow pits in Departmental land when permitted and
from non Departmental and private lands when necessary.
The contractor shall follow the priorities fixed by the Engineer for
obtaining the materials from different sources.
All lifts and leads involved in conveying the materials to site shall be
included in the rate except when the materials from road cutting or
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other excavation being paid separately are to be conveyed for use in
banks with different leads.
If the materials are to be obtained from non-Departmental and private
lands, the contractor shall make his own arrangements and be
responsible for payment for rents, compensation, royalty etc. and shall
not be entitled for extra claims.
The Department shall remain indemnified regarding any claims that
may be made by private owners in this respect.
If all the useful materials available from the road cutting are not used
and materials obtained from other sources are used instead by the
contractor for his own convenience, such materials shall be deemed to
have been obtained from the road cutting to the extent to which useful
materials were available for bank and shall not be paid for under this
item.
4.5 EQUIPMENT S :
Pickaxes, crowbars, phawras and pans may be used for manual work.
Scrapers, dozers, graders, shovels, dumpers, trucks, trolleys etc. may
be used for mechanised work. Three wheel 8 tonne power roller or
sheepsfoot roller giving a pressure required to obtain the specified
density may be used for compaction. Bullock carts with tanks or
mechanically driven tankers may be used for watering.
4.6 CONSTRUCTION METHOD :
4.6.1 Diversion :
If diversions barricading and signals are found to be necessary, they
shall be provided as directed by Engineer-in-charge.
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4.6.2 Preparing the ground for laying bank :
Before any material is laid for the bank the ground shall be cleared of
all rubbish etc. and the holes if any, filled up. When the embankment
is to be laid on hill sides or slopes, the existing slopes shall be
ploughed deeply. If the cross slopes are steeper than 1 in 3, steps with
reverse slope shall be cut into the slopes to give proper hold and
seating to the bank as directed by the Engineer. On surfaces flatter
than 1 in 15 no special surface treatment such as cutting steps shall be
necessary. The top 15 cm. of soil shall be scarified and watered if
directed and compacted to the same density as specified for the
embankment before any material is laid for the bank-work.
When the embankment is to be placed over an existing road or other
hard surface which is within 15 cm. of the finished formation, the road
or other hard surface shall be scarified to a minimum depth of 15 cm.
The rate for embankment includes all the operations for preparing the
bed for laying the bank.
4.6.3 Laying the bank :
Embankment material shall be placed in successive horizontal layers of
20 cm. to 30 cm. depth, extending to the full width of the
embankment including the slopes at the level of the particular layer
and 30 cm. more on both sides to allow compaction of the full
specified section. The extra loose stuff at the edges shall be trimmed
later after completion of the bank work without extra cost leaving the
correct section fully compacted.
Keeping the width of the bank initially less and widening it later by
dumping loose earth on the slopes shall not be permitted as the
additional width and slopes will remain loose and uncompacted.
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Similar procedure to extend the embankment by dumping the material
longitudinally shall also not be allowed. When placing the bankwork
in 20 cm. to 30 cm. layers is not feasible as in water or over slopes too
steep to operate the construction equipment, the embankment may be
constructed in one layer to the minimum level at which equipment can
be operated and above such a level, the embankment shall be made
up in layers of specified thickness. When boulders, broken stones and
similar hard materials are mixed up with the embankment materials
care shall be taken to see that they are distributed uniformly into the
bank and that no hollows are left near them. No stone or hard
material shall project above the top of any layer. Each layer of
embankment shall be watered, levelled and compacted as specified
hereinafter, before the succeeding layer is placed. The surface of the
embankment shall, at all times during construction, be maintained at
such a cross fall as will shed water and prevent ponding. If bridges
and culverts on the road are not completed in advance of bankwork, a
length of 15 m. to 30 m. bank shall be left on each side of the
structure and these lengths shall be dealt with later for placing the
bank work.
4.6.4 Watering :
If the bank material contains less than the optimum moisture water
shall be added to the material in the borrow pits or alternatively in the
loose layers of the embankment to bring the moisture uniformly upto
requirement. If some moisture is likely to be evaporated in transit or in
the bank before compaction adequate water in excess shall be added
to allow for the loss. If the material contains more than the required
moisture, it shall be allowed to dry until the moisture is reduced to the
required extent. If due to wet weather etc., the moisture content of the
soil cannot be reduce to the appropriate amount by exposure, bank
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work shall be suspended till suitable conditions prevail without
contractor's claiming any compensation.
Water to be used shall be free of from harmful elements which may
cause heavy efflorescence etc., and approved by the Engineer. The
contractor shall make his own arrangement for getting adequate
quantity of acceptable water.
4.6.5 Compaction :
When a loose layer is levelled manually of mechanically and
moistured or dried to a uniform moisture content suitable for
maximum compaction, it shall be compacted by power roller, sheeps
foot rollers or vibratory roller or heavy hauling or dozing equipment to
give the specified 95%/98% of the Modified Proctor density for
respective item specified under Schedule “A”. If on testing, the density
is found to be less then 95%/98% of the Modified Proctor density the
contractor shall do additional compaction necessary to get the
specified density after adding water if required. It the density can not
be improved on reasonable efforts, the work may be accepted as
substandard by the Engineer, if he thinks it not harmful for the
purpose, at a reduce rate. Where the specified density is imperative the
work shall be removed and redone by the contractor at his own cost to
give the specified density.
Where the material allowed to be used is excessively stony or sandy so
that it will not compact to the required density where such material is
otherwise acceptable for embankment construction the Engineer may
waive the tests for stony or sandy portions where the required test
results are contained. Each layer shall be compacted fully before the
next layer is laid.
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Proper sequence of all component operation shall be maintained to
give individual progress. To all for subsequent settlement, the finished level or of the
embankment may be kept higher than the specified level by 1 cm. for
each metre of the height of the bank and this, if provided, will be paid
for.
The hauling equipment, animals, labour etc., shall be made to go over
the bank as far as possible, to get the initial compaction. Care shall be
taken for getting good compaction behind abutments returns and
wings walls, etc.
Bank-work in areas not accessible to rollers such as those adjoining
bridges, culverts and other work, shall be carried out independently of
the main embankment and shall be have the layers placed in 10 cm.
to 15 cm. (about 4" to 6") height and each layer shall be moistened
and thoroughly compacted with mechanical or manual tampers.
Embankment shall be brought up simultaneously in equal layers on
each side and compacted carefully to avoid unequal pressure etc.
4.7 PROTECTION :
Proper care shall be taken to ensure that the method of operation and
compaction of the bank-word does not cause damage or undue strain
to any structural element. Embankment over and around bridges or
culverts shall be of approved materials and carefully placed and
compacted. The contractor shall take all precautions necessary for the
protection of the bank-work by diversion of streams, local surface
drainage, rain water etc. likely to damage the bank. Any damage to
the bank-work due to no protection or inadequate protection shall be
made good by the contractor at his own cost. Conveyance of
materials shall not cause obstruction or nuisance to the nearby
property owners and traffic.
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4.8 FINISHING :
The embankment shall be finished and dressed smooth and even in
conformity with the alignment, levels, cross- sections and dimensions
shown on the drawings with due allowance for shrinkage. On curves,
section shall be provided with super elevation and increased widths as
shown on the plans or directed by the Engineer. All damages caused
by rain, flood or any other reason shall be made good in the finishing
operations. The road land which shall be cleared of all debris and ugly
spots near camping areas etc. for which the contractor or his men
were responsible.
4.9 MAINTENANCE :
The contractor shall be responsible for maintaining the bank-work
satisfactorily at his own cost till finally accepted including making good
any damages.
4.10 TESTS :
1) Tests shall be made to determine the maximum density of the
material to be used by the Proctor method before starting the
work.
2) Density tests shall be carried out for the bankwork during the
progress of the work. One set of three core samples for every
3,000 sq.m. area of each layer of bankwork shall be taken and
tested. The average density shall not be less than 95%/98% of
the Modified Proctor density for respective item specified under
Schedule “A”.
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4.11 ITEM TO INCLUDE :
1) Clearing site.
2) Setting out alignment including necessary labour and materials
and maintaining it as long as required.
3) Preparing the ground for laying the embankment.
4) Providing and maintaining diversions if necessary.
5) Obtaining the embankment materials including all lifts and leads
and laying the bank in layers, watering, compaction and tests
and Royalties, fees etc. if any.
6) Protecting and maintaining the bank.
7) Finishing the embankment.
8) All labour, materials, use of equipment, tools and plants
necessary for completing the work satisfactorily.
4.12 MODE OF MEASUREMENT AND PAYMENT :
The contract rate shall be per cu. metre of the finished bankwork.
Measurements shall normally be taken by levelling sections and
chaining distances between them.
The measurements of the sections shall be limited to the dimensions
shown on the drawings or those ordered by the Engineer in writing.
The dimensions shall be recorded correct upto two places of decimals
of a metre. The sectional areas shall be worked out correct upto two
places of decimals of a sq.metre. The quantity shall be worked out
correct upto two places of decimals of a cu.m. by the average end
area method.
If outside materials have been used in the portions of the bankwork
where materials from cutting were to be used the outside material shall
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be deemed to have been obtained from the cutting as specified in
those item and paid for under those items only.
No deduction shall be made from the gross volume for R.A. Bills as
well as Final Bill.
5.0 Providing earthwork in embankment with approved materials obtained from contractor’s own source including all lifts and leads, laying in layers of 20 cm. to 30 cm. thickness, breaking clods, dressing to the required lines, curves, grades and section, watering and compacting to 97% Modified Proctor Density Complete.
5.1 GENERAL :
The work shall include preliminaries of clearing site, setting out and
preparing the ground and thereafter forming embankment for the
road with approved materials obtained from contractor’s own source,
laying in layers, watering and compacting to the required density and
lines, curves, grades, cross section and dimensions shown on the plan
or as directed by the Engineer with due allowance for shrinkage.
5.2 CLEARING SITE :
The ground over which embankment is to be formed shall be cleared
of all trees (unless cutting of trees of over 30 cm. girth is provided as a
separate item vide Rd.1), brushwood, loose stones, vegetation, bushes,
stumps and all other objectionable materials, under this item. Roots
of trees shall be grubbed to a depth of at least 15 cm. below the
original ground surface and at least 30 cm. below the formation level
whichever is deeper. The holes dug up for grubbing roots etc. shall be
filled with excavated materials in layers of 15 cm. and compacted.
Brushwood, stumps, vegetation etc. shall be cut flush with the ground
materials obtained from clearing site shall be dealt with according to
Clause No.5.2 of Particular Specifications.
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5.3 SETTING OUT :
After the site is cleared, setting out shall be done as laid down in
Clause No. 5.3 of Particular Specification. Profiles shall be set up with
stout poles to mark the centre and edges of the formation with the top
levels of formation clearly marked by paint or cut and the slopes with
string and pegs at every 80 metres on straight portion and 10 m. or
less on curves or as directed by the Engineer. Toe line may be marked
with pick marks. Longitudinal and cross section levels shall be taken
recorded and checked for measurements and signed by the contractor
or his representative.
All the materials and labour required for this item shall be supplied
and profiles, B.Ms. etc. put up by the contractor. These shall be
covered by the rate.
Profiles, pegs, bench marks and other marks shall be maintained
without any disturbance as long as they are required.
5.4 MATERIALS :
After utilising, for the embankment all the useful and acceptable
materials obtained from the contractor’s own source within the
specified leads the contractor shall obtained additional materials from
Contractor’s own source. Satisfactory soil murum or a mixture of soil,
sand, murum, gravel, small boulders or rubble shall normally be
acceptable. Soils having laboratory dry density shall be specified in the
item description of Schedule “A” (Bill of quantities). Only the materials
considered suitable by the Engineer shall be used for the bank.
Rejected materials shall not be put into the bank nor brought to the
work site. Perishable materials such as stumps, pieces of wood, roots,
rubbish, etc. and such other materials as will effect the stability of the
embankment shall not be used. Soils with humus of grass will be
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permitted to be used as surface covering for the bank slopes to a
thickness of not more than 30 cm. (about 12").
5.5 EQUIPMENT :
Pickaxes, crowbars, phawras and pans may be used for manual work.
Scrapers, dozers, graders, shovels, dumpers, trucks, trolleys etc. may
be used for mechanised work. 8-10 tonne vibratory roller giving a
pressure required to obtain the specified density may be used for
compaction. Mechanically driven tankers may be used for watering.
5.6 CONSTRUCTION METHOD :
5.6.1 Diversion :
If diversions barricading and signals are found to be necessary, they
shall be provided as detailed in specification No. BR. 1 of Standard
Specifications of Red Book.
5.6.2 Preparing the ground for laying bank :
Before any material is laid for the bank the ground shall be cleared of
all rubbish etc. and the holes if any, filled up. When the embankment
is to be laid on hill sides or slopes, the existing slopes shall be
ploughed deeply. If the cross slopes are steeper than 1 in 3, steps with
reverse slope shall be cut into the slopes to give proper hold and
seating to the bank as directed by the Engineer. On surfaces flatter
than 1 in 15 no special surface treatment such as cutting steps shall be
necessary. The top 15 cm. (about 6") of soil shall be scarified and
watered if directed and compacted to the same density as specified for
the embankment before any material is laid for the bank-work.
When the embankment is to be placed over an existing road or other
hard surface which is within 15 cm. (about 6") of the finished
formation, the road or other hard surface shall be scarified to a
minimum depth of 15 cm. (about 6").
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The rate for embankment includes all the operations for preparing the
bed for laying the bank.
5.6.3 Laying the bank :
Embankment material shall be placed in successive horizontal layers
of 20 cm. to 30 cm. (about 8" to 12") depth, extending to the full
width of the embankment including the slopes at the level of the
particular layer and 30 cm. (about 12") more on both sides to allow
compaction of the full specified section. The extra loose stuff at the
edges shall be trimmed later after completion of the bank work without
extra cost leaving the correct section fully compacted.
Keeping the width of the bank initially less and widening it later by
dumping loose earth on the slopes shall not be permitted as the
additional width and slopes will remain loose and uncompacted.
Similar procedure to extend the embankment by dumping the material
longitudinally shall also not be allowed. When placing the bankwork
in 20 cm. to 30 cm. layers is not feasible as in water or over slopes too
steep to operate the construction equipment, the embankment may be
constructed in one layer to the minimum level at which equipment can
be operated and above such a level, the embankment shall be made
up in layers of specified thickness. When boulders, broken stones and
similar hard materials are mixed up with the embankment materials
care shall be taken to see that they are distributed uniformly into the
bank and that no hollows are left near them. No stone or hard
material shall project above the top of any layer. Each layer of
embankment shall be watered, levelled and compacted as specified
hereinafter, before the succeeding layer is placed. The surface of the
embankment shall, at all times during construction, be maintained at
such a cross fall as will shed water and prevent ponding. If bridges
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and culverts on the road are not completed in advance of bankwork, a
length of 15 m. to 30 m. (about 50' to 100') bank shall be left on each
side of the structure and these lengths shall be dealt with later for
placing the bank work.
5.6.4 Watering:
If the bank material contains less than the optimum moisture water
shall be added to the material in the borrow pits or alternatively in the
loose layers of the embankment to bring the moisture uniformly upto
requirement. If some moisture is likely to be evaporated in transit or in
the bank before compaction adequate water in excess shall be added
to allow for the loss. If the material contains more than the required
moisture, it shall be allowed to dry until the moisture is reduced to the
required extent. If due to wet weather etc., the moisture content of the
soil cannot be reduce to the appropriate amount by exposure, bank
work shall be suspended till suitable conditions prevail without
contractor's claiming any compensation.
Water to be used shall be free of from harmful elements which may
cause heavy efflorescence etc., and approved by the Engineer. The
contractor shall make his own arrangement for getting adequate
quantity of acceptable water.
5.6.5 Compaction:
When a loose layer is levelled manually of mechanically and
moistured or dried to a uniform moisture content suitable for
maximum compaction, it shall be compacted by power roller, sheeps
foot rollers or vibratory roller or heavy haling or dozing equipment to
give the specified 97% of the Modified Proctor Density. If on testing,
the density is found to be less than 97% of the Modified Proctor Density
the contractor shall do additional compaction necessary to get the
specified density after adding water if required. The density can not be
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improved on reasonable efforts, the work may be accepted as
substandard by the Engineer. If he thinks it not harmful for the
purpose, at a reduce rate. Where the specified density is imperative
the work shall be removed and redone by the contractor at his own
cost to give the specified density.
Where the material allowed to be used is excessively stony or sandy so
that it will not compact to the required density where such material is
otherwise acceptable for embankment construction the Engineer may
waive the tests for stony or sandy portions where the required test
results are contained. Each layer shall be compacted fully before the
next layer is laid.
Proper sequence of all component operation shall be maintained to
give individual progress.
To all for subsequent settlement, the finished level or of the
embankment may be kept higher than the specified level by 1 cm. for
each metre of the height of the bank and this, if provided, will be paid
for.
The hauling equipment, animals, labour etc., shall be made to go over
the bank as far as possible, to get the initial compaction. Care shall be
taken for getting good compaction behind abutments returns and
wings walls, etc.
Bank-work in areas not accessible to rollers such as those adjoining
bridges, culverts and other work, shall be carried out independently of
the main embankment and shall be have the layers placed in 10 cm.
to 15 cm. (about 4" to 6") height and each layer shall be moistened
and thoroughly compacted with mechanical or manual tampers.
Embankment shall be brought up simultaneously in equal layers on
each side and compacted carefully to avoid unequal pressure etc.
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5.7 PROTECTION:
Proper care shall be taken to ensure that the method of operation and
compaction of the bank-word does not cause damage or undue strain
to any structural element. Embankment over and around bridges or
culverts shall be of approved materials and carefully placed and
compacted. The contractor shall take all precautions necessary for the
protection of the bank-work by diversion of streams, local surface
drainage, rain water etc. likely to damage the bank. Any damage to
the bank-work due to no protection or inadequate protection shall be
made good by the contractor at his own cost. Conveyance of materials
shall not cause obstruction or nuisance to the nearby property owners
and traffic.
5.8 FINISHING:
The embankment shall be finished and dressed smooth and even in
conformity with the alignment, levels, cross-sections and dimensions
shown on the drawings with due allowance for shrinkage. On curves,
section shall be provided with super elevation and increased widths as
shown on the plans or directed by the Engineer. All damages caused
by rain, flood or any other reason shall be made good in the finishing
operations. The road land which shall be cleared of all debris and ugly
spots near camping areas etc. for which the contractor or his men
were responsible.
5.9 MAINTENANCE:
The contractor shall be responsible for maintaining the bank-work
satisfactorily at his own cost till finally accepted including making good
any damages.
5.10 TESTS:
1) Tests shall be made to determine the maximum density of the
material to be used by the Proctor method before starting the
work.
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2) Density tests shall be carried out for the bankwork during the
progress of the work. One set of three core samples for every
3,000 sq.m. area of each layer of bank work shall be taken and
tested. The average density shall not be less than 97% of the
Proctor density. A deviation of 80 kg./cu.m. for fine and 160
Kg./cu.m. for coarse grained soils shall be permitted in dry
density in individual sample if the average density reaches upto
97% Modified Proctor density for each set.
5.11 ITEM TO INCLUDE :
1) Clearing site.
2) Setting out alignment including necessary labour and materials
and maintaining it as long as required.
3) Preparing the ground for laying the embankment.
4) Providing and maintaining diversions if necessary unless provided
as a separate item in the tender.
5) Obtaining the embankment materials including all lifts and leads
and laying the bank in layers, watering, compaction and tests
and Royalties, fees, Quarry Permit etc. if any.
6) Protecting and maintaining the bank.
7) Finishing the embankment.
8) All labour, materials, use of equipment, tools and plants
necessary for completing the work satisfactorily.
5.12 MODE OF MEASUREMENT AND PAYMENT :
The contract rate shall be per cu. metre of the finished bank work.
Measurements shall normally be taken by levelling sections and
chaining distances between them.
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The measurements of the sections shall be limited to the dimensions
shown on the drawings or those ordered by the Engineer in writing.
The dimensions shall be recorded correct upto two places of decimals
of a metre. The sectional areas shall be worked out correct upto two
places of decimals of a sq.metre. The quantity shall be worked out
correct upto two places of decimals of a cu.m. by the average end
area method.
The volume of bank thus calculated shall be reduced by 5 percent for
the purpose of payment when the measurements are taken for
running bills and by 1 percent in final measurements.
If outside materials have been used in the portions of the bankwork
where materials from cutting were to be used the outside material
shall be deemed to have been obtained from the cutting as specified
in those item and paid for under those items only.
The final quantity to be paid for under this item shall be the total
quantity of bankwork reduced by 1 percent less the quantity to be paid
for using materials from cutting.
The gross quantity of earthwork embankment payable under this item
shall be deducted from the total payable quantity of excavation.
6.0 GRANULAR SUB-BASE
6.1 SCOPE:
This work shall consist of laying and compaction well-graded material
on prepared subgrade in accordance with the requirements of these
specifications. The material shall be laid in one or more layers as sub-
base and upper sub-base (termed as sub-base hereinafter) as
necessary according to lines, grades and cross- sections shown on the
drawings or as directed by the Engineer.
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6.2 MATERIALS:
6.2.1 The material to be used for the work shall be natural sand, murum,
gravel, crashed stone or combination thereof depending upon the
grading required. Materials like crushed slag, crushed concrete, brick
metal and kankar may be allowed only with the specific approval of the
Engineer. The material shall be free from organic or other deleterious
constituents and conform to one of the three grading given in Table-1.
While the in Table-1 are in respect of close-graded granular sub-base
materials. One each for maximum particle size of 75mm, 53mm and
26.5mm, the corresponding gradings for the coarse graded materials
for each of the three maximum particle sized are given at Table-2. The
grading to be adopted for a project shall be specified in the contract.
6.2.2 PHYSICAL REQUIREMENT:
The material shall have a 10 percent fines value of 50kN or more (for
sample in soaked condition) when tested in compliance with BS: 812
(Part-III). The water absorption value of the coarse aggregate shall be
determined as per IS: 2386 (Part-III); If this value is greater than 2
percent, the soundness test shall be carried out on the material
delivered to site as per IS: 383. For grading II & III materials, the CBR
shall be determined at the density and moisture content likely to be
developed in equilibrium conditions which shall be taken as being the
density relating to a uniform air voids content of 5 percent.
TABLE – 1
GRADING FOR CLOSE GRADED GRANULAR SUB-BASE MATERIALS
IS SIEVE DESIGNATION
PERCENT BY WEIGHT PASSING THE IS SIEVE
GRADING-I GRADING-II GRADING-III
75.0 MM 100 --- ---
53.0 MM 80 – 100 100 ---
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TABLE – 1
GRADING FOR CLOSE GRADED GRANULAR SUB-BASE MATERIALS
IS SIEVE DESIGNATION
PERCENT BY WEIGHT PASSING THE IS SIEVE
GRADING-I GRADING-II GRADING-III
26.5 MM 55 – 90 70 – 100 100
9.50 MM 35 – 65 50 – 80 65 – 95
4.75 MM 22 – 55 40 – 65 50 – 80
2.36 MM 20 – 40 30 – 50 40 – 65
0.425 MM 10 – 25 15 – 25 20 – 35
0.075 MM 3 – 10 3 – 10 3 – 10
CBR VALUE (Minimum)
30 25 20
NOTE:
The material passing 425 micron (0.425mm) sieve for all the three
gradings when tested according to IS:2720 (Part-5) shall have liquid
limit plasticity index not more than 25 and 6 percent respectively.
6.3 STRENGTH OF SUB-BASE:
It shall be ensured prior to actual execution that the material to be used
in the sub-base satisfies the requirements of CBR and other physical
requirements when compacted and finished.
When directed by the Engineer, this shall be verified by performing CBR
tests in the laboratory as required on specimens remoulded at field dry
density and moisture content and any other tests for the “quality” of
materials as may be necessary.
6.4 CONSTRUCTION OPERATIONS:
6.4.1 Preparation of subgrade:
Immediately prior to the laying of sub-base, the subgrade already
finished as to clause 301 or 305 of MORT & H Specification as
applicable shall be prepared by removing all vegetation and other
extraneous matter, lightly sprinkled with water if necessary and rolled
with two passes of 80 – 100 kN smooth wheeled roller.
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6.4.2 Spreading and Compacting: The sub base material of grading
specified in the contract shall be spread on the prepared sub – grade
with the help of a motor grader of adequate capacity, its blade having
hydraulic controls suitable for initial adjustment and maintain the
required slope and grade during the operation or other means as
approved by the Engineer.
When the sub-base material consists of combination of materials
mentioned in Clause 401.2.1 of MORT & H Specification (Fourth
Revision), mixing shall be done mechanically by the mix-in-place
method.
Manual mixing shall be permitted only where the width of laying not
adequate for mechanical operations as in small – sized jobs. The
equipment used for mix-in-place construction shall be rotavator or
similar approved equipment capable of mixing the material to the
desired degree. If so desired by the Engineer, trial runs with the
equipment shall be carried out to establish its suitability for the work.
Moisture content of the loose material shall be checked in accordance
with IS:2720 (Part-2) and suitably adjusted by sprinkling additional
water a truck mounted or trailer mounted water tank and suitable for
applying water uniformly and at controlled quantities to variable widths
of surface or other means approved by the Engineer so that, at the time
of compaction, it is from 1 Percent above to 2 percent below the
optimum moisture content corresponding to IS:2720 (Part-8). While
adding water, due allowance shall be made for evaporation losses.
After water has been added, the material shall be processed by
mechanical or other approved means like disk harrows, rotavators until
the layer is uniformly wet.
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Immediately, thereafter, rolling shall start. If the thickness or compacted
layer does not exceed 100mm, a smooth wheeled roller of 80 to 100
kN weight may be used. For a compacted single layer upto 225 mm
the compaction shall be done with the help of a vibratory roller of
minimum 80 to 100kN static weight with plain drum or pad foot drum
or heavy pneumatic tyred roller of minimum 200 to 300 kN weight
having a minimum tyre pressure of 0.7 MN/m2 or equivalent capacity
roller capable of achieving the required compaction. Rolling shall
commence at the lower edge and proceed towards the upper edge
longitudinally for portions having unidirectional cross fall and super-
elevation and shall commence at the edges and progress towards the
center for positions having cross fall on both sides.
Each pass or the roller shall uniformly overlap not less than one-third of
the track made in the preceding pass. During rolling, the grade and
crossfall (camber) shall be checked and any high spots or depressions,
which become apparent, corrected by removing or adding fresh
material. The speed of the roller shall not exceed 5 km.per hour.
Rolling shall be continued till the achieved is at least 98 percent of the
maximum dry density for the material determined as per IS:2720
(Part-8). The surface of any layer of material on completion of
compaction shall be well closed, free from movement under
compaction equipment and from compaction planes, ridges, cracks or
loose material. All loose, segregated or otherwise defective areas shall
be made good to the full thickness of layer and re-compacted.
6.5 SURFACE FINISH AND QUALITY CONTROL OF WORK:
The surface finish of construction shall conform to the requirements of
Clause 902 of MORT &H Specifications.
Control on the quality of materials and works shall be exercised by the
Engineer in accordance with Section 900.
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6.6 ARRANGEMENTS FOR TRAFFIC:
During the period of construction, arrangement of traffic shall be
maintained in accordance with Clause 112 of MORT & H
Specifications.
6.7 MEASUREMENT FOR PAYMENT:
Granular sub-base shall be measured as finished work in position in
cubic metres.
The protection of edges of granular sub-base extended over the full
formation as shown in the drawing shall be considered incidental to the
work of providing granular sub-base and as such no extra payment
shall be made for the same.
6.8 RATE:
The contact unit rate for granular sub-base shall be payment in full for
carrying out the required operations including full compensation for:
1) Making arrangements for traffic to Clause 112 of MORT & H
Specifications except for initial treatment to verges, shoulders
and construction or diversions:
2) Furnishing all materials to be incorporated in the work including
all royalties, fees, rents where necessary and all leads and lifts:
3) All labour, tools, equipment and incidentals to complete the work
to the specifications,
4) Carrying out the work in part widths of road where directed and
5) Carrying out the required tests for quality control.
7.0 WET MIX MACADAM SUB – BASE / BASE :
7.1 SCOPE :
This work shall consist of laying and compacting clean, crushed,
graded aggregate and granular material, premixed with water, to a
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dense mass on a prepared subgrade/sub-base/base or existing
pavement as the case may be in accordance with the requirements of
the specification. The material shall be laid in one or more layers as
necessary to lines, grades and cross sections shown on the approved
drawings or as directed by the Engineer.
The thickness of a single compacted Wet Mix Macadam layer shall be
less than 75 mm. When vibrating or other approved types of
compacting equipment are used, the compacted depth of a single layer
of the sub-case course may be increase to 200 mm upon approval of
the Engineer.
7.2 MATERIALS :
7.2.1 Physical requirement :
Coarse aggregate shall be crushed stone. If crushed gravel/shingle is
used not less than 90 percent by weight of the gravel/shingle pieces
retained on 4.75 mm sieve shall have at least two fractured faces. The
aggregates shall conform to the physical requirements set forth in the
following Table – 1.
TABLE – 1
PHYSICAL REQUIREMENTS OF COARSE AGGREGATES
FOR WET MIX MACADAM FOR BASE COURSES
SL. NO.
TEST TEST METHOD REQUIREMENTS
1. *Loss Angles Abrasion Value or
IS : 2386 (Part – IV) 40% Maximum
2. * Aggregate impact value
IS : 2386 (Part –IV) or IS : 5640
30% Maximum
3. Combined flakiness and Elongation indices (total)
IS : 2386 (Part – I) 30% Maximum**
* Aggregates may satisfy requirement of either of the two tests.
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** To determine this combined proportion, the flaky stone from a
representative sample should first be separated out. Flakiness index is
weight of flaky stone metal divided by weight of stone sample. Only the
elongated particles be separated out from the remaining (non-flaky)
stone metal. Elongation index is weight of elongated particles divided
by total non-flaky particles. The value of flakiness index and elongation
index so found are added up.
7.2.2 Grading requirements :
The aggregates shall conform to the grading given below:
TABLE – 2
GRADING REQUIRMENTS OF AGGREGATES FOR WET MIX MACADAM
SIEVE DESIGNATION PERCENT PASSING
53 mm 100
45 mm 95 -100
26.5 mm ---
22.4 mm 60 – 80
11.2 mm 40 – 60
4.75 mm 25 – 40
2.36 mm 15 -30
600 microns 8 -22
75 microns 0-8
Materials finer than 425 micron shall have Plasticity Index (PI) not
exceeding 6.
The final gradation approved within these limits shall be well graded
from coarse to fine and shall not vary from the low limit on one sieve to
the high limit on the adjacent sieve or vice versa.
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7.2.3 Construction operation:
7.2.3.1 Preparation of Base:
Clause 404.3.1 of MORT & H shall apply.
7.2.3.2 Provisional of lateral confinement of aggregates:
While constructing wet mix macadam, arrangement shall be made for
the lateral confinement of wet mix. This shall be done by laying
materials in adjoining shoulders along with that the wet mix macadam
layer and following the sequence of operations described in Clause
407.4.1 of MORT & H.
7.2.3.3 Preparation of mix :
Wet – mix macadam shall be prepared in an approved mixing plant of
suitable capacity having provision for controlled addition of water and
force/positive mixing arrangement like pugmill or pan type mixer of
concrete batching plant. For small quantity of wet mix work, the
Engineer may permit the mixing to be done in concrete mixers.
Optimum moisture for mixing shall be determined in accordance with
IS:2720 (Part -8) after replacing the aggregate fraction retained on
22.4 mm sieve with material of 4.75 mm to 22.4 size. While adding
water, due allowance should be made for evaporation losses. However,
at the time of compaction, water in the wet mix should not very from the
optimum value by more than agreed limits. The mixed material should
be uniformly wet and no segregation should be permitted.
7.2.3.4 Spreading of mix :
Immediately after mixing, the aggregates shall be spread uniformly and
evenly upon the prepared subgrade/sub-base/base in required
quantities. In no case should these be dumped in heaps directly on the
area where these are to be laid nor shall their hauling over a partly
completed stretch be permitted.
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The mix may be spread either by a motor grader or a paver finisher or
motor grader. For portions where mechanical means cannot be used,
manual means as approved by the Engineer shall be used. The motor
grade shall be capable of spreading the material uniformly all over the
surface. Its blade shall have hydraulic control suitable for initial
adjustments and maintaining the same so as to achieve the specified
slope and grade.
The paver finisher shall be self propelled having the following features:
i) Moving hoppers and suitable distribution mechanism
ii) The screed shall have tamping and vibrating arrangement for
initial compaction to the layer as it is spread without rutting or
otherwise marring the surface profile.
iii) The paver shall be equipped with necessary control mechanism
so as to ensure that the finished surface is free from surface
blemishes.
The surface of the aggregate shall be carefully checked with templates
and all high or low spots remedied by removing or adding aggregate
as may be required. The layer may be tested by depth blocks during
construction. No segregation of large and fine particles should be
allowed. The aggregates as spread should be of uniform gradation
with no pockets of fine/coarse materials.
7.2.3.5 Compaction :
After mix have been laid to the required thickness, grade and cross
fall/camber, the same shall be uniformly compacted to the full depth
with suitable roller. If the thickness of single compacted layer does not
exceed 100mm, a smooth wheel roller of 80 to 100 kN weight may be
used . For a compacted roller layer upto 200mm the compaction shall
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be done with the help of vibratory roller of minimum static weight of 80
to 100kN of equivalent capacity roller. The speed of the roller shall not
exceed 5 k.m./h.
In portions having unidirectional cross fall/super elevation, rolling shall
commence from the lower edge and progress gradually towards the
upper edge. Thereafter roller should progress parallel to the centre line
of the road, uniformly overlapping each preceding track by at least one
third width until the entire surface has been rolled. Alternate strips of
the roller shall be terminated in stops at least 1 m. away from any
preceding stop.
In portions in camber, rolling should begin at the edge with the roller
running forward and backward until the edges have been firmly
compacted. The roller shall then progress gradually towards the centre
parallel to the centre line of the road uniformly overlapping each of the
preceding tract by at least one third width until the entire surface has
been rolled.
Any displacement occurring as a result of reversing of the direction of
the roller or from any other cause shall be corrected at once as
specified and or removed the made good.
Along forms, kerbs, walls or other places not accessible to the roller,
the mixture shall be thoroughly compacted with mechanical tampers or
a plate compactor. Skin patching of an area without scarifying the
surface to permit proper bonding of the added material shall not be
permitted.
Rolling should not be done when the sub – grade is soft or yielding or
when it causes a wave – like motion in the sub-base/base course or sub
– grade. If irregularities develop during rolling which exceed 12 mm
when tested with a 3 metre straight edge, the surface should be loosed
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and premixed material added or removed as required before rolling
again so as to achieve a uniform surface conforming to the desired
grade and cross fall. In no case should the use of unmixed material be
permitted to make up the depressions.
Rolling should be continued till the density achieved is at least 98% of
the maximum dry density for the material as determined by the method
outlined in IS:2720 (Part 8).
After completion, the surface of any finished layer should be well
closed, free from movement under compaction equipment or any
compaction planes, ridges, cracks and loose material. All loose,
segregated or otherwise defective areas shall be made good to the full
thickness of the layer and re-compacted.
7.2.3.6 Setting and drying :
After final compaction of wet mix macadam course, the road shall be
allowed to dry for 24 hours.
7.2.4 Opening to traffic :
Preferably no vehicular traffic of any kind should be allowed on the
finished wet-mix macadam surface till it has dried and the wearing
course laid.
7.2.5 Surface Finish and Quality Control of work :
7.2.5.1 Surface evenness :
The surface finish of construction shall conform to the requirements of
Clause 902.
7.2.5.2. Quality control :
Control of the quality of materials and shall be exercised by the
Engineer in accordance with Section 900 of M.O.R.T. & H.
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7.2.6 Rectification of Surface irregularity :
Where the traffic irregularity of the wet mix macadam course exceeds
the permissible tolerance or where the course is otherwise defective due
to sub-grade soil getting mixed with the aggregates, the full thickness of
the layer shall be scarified over the affected area, re-shaped with
added premixed material or removed and replace with fresh premixed
material as applicable and re-compacted in accordance with Clause
406.3 The area treated in aforesaid manner shall not be less than 5 m.
long and 2 m. wide. In no case shall depressions be filled up with
unmixed and ungraded material or fines.
7.2.7 Arrangement for traffic :
During the period of construction, arrangement of traffic shall be done
as per Clause 112.
7.2.8 Measurement for payment :
Wet mix macadam shall be measure as finished work in position in
cubic metres.
7.2.9 Rates :
The contract unit rate for wet mix macadam shall be payment in full for
carrying out the required operations including compensation for all
components listed Clause 401.8 of MORT&H Specifications.
8.0 PRIME COAT OVER GRANULAR BASE :
8.1 SCOPE :
This work shall consist of application of a single coat of low viscosity
liquid bituminous material to a porous granular surface preparatory to
the superimposition of bituminous treatment or mix.
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8.2 MATERIALS :
8.2.1 Primer :
The choice of a bituminous primer shall depend upon the porosity
characteristics of the surface to be primed as classified in IRC : 16.
These are :
i) Surface of low porosity; such as cement stabilized soil base.
ii) Surface of medium porosity, such as cement stabilized soil
base.
iii) Surfaces of high porosity; such as a gravel base.
8.2.2 Primer viscosity :
The type and viscosity of the primer shall comply with the requirements
of IS 8887, as sampled and tested for bituminous primer in accordance
with theses standards. Guidance on viscosity and rate of spray is given
in Table – 1.
TABLE – 1
VISCOSITY REQUIREMENT AND QUANTITY OF LIQUID
BITUMINOUS PRIMER
Types of surface
Kinematic Viscosity of
Primer at 600 C
(Centistokes)
Quantity of Liquid
Bituminous Material per
10 Sq.m. (K.G.)
Low porosity 30 – 60 6 to 9
Medium porosity 70 – 140 9 to 12
High porosity 250 – 500 12 to 15
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8.2.3 Choice of primer :
The primer shall be bitumen emulsion, complying with IS 8887 of a
type and grade as specified in the contract or as directed by the
Engineer. The use of medium curing cutback as per IS 217 shall be
restricted only for sites at sub-zero temperatures or for emergency
applications as directed by the Engineer.
8.3 WEATHER AND SEASONAL LIMITATIONS :
Bituminous primer shall not be applied to a wet surface or during dust
storm or when the weather is foggy, rainy or windy or when the
temperature in the shade is less than 100 C. Surfaces which are to
receive emulsion primer should be damp, but no free or standing water
shall be present.
8.4 CONSTRUCTION :
8.4.1 Equipment :
The primer distribute shall be a self – propelled or towed bitumen
pressure sprayer equipped for spraying the material uniformly at
specified rates and temperatures. Hand spraying of small areas,
inaccessible to the distributor, or in narrow strips shall be sprayed with
a pressure hand sprayer, or as directed by the Engineer.
8.4.2 Preparation of road surface :
The surface to be primed shall be prepared in accordance with Clause
501.8 and 902 of MORT & H (Forth Revision) as appropriate.
Immediately prior to applying the primer the surface shall be carefully
swept clean of dust and loose particles, care being taken not to disturb
the interlocked aggregate. This is best achieved when the surface layer
is slightly moist (lightly sprayed with water and the surface allowed do
dry) and the surface should be kept moist until the primer is applied.
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8.4.3 Application of bituminous primer :
The viscosity and rate of application of the primer shall be secified in
the contract, or as determined by site trials carried out as directed by
the Engineer. Where a geosynthetic is proposed for use, the
requirements of Clauses 703.3.2 & 703.4 of MORT&H specifications
shall apply. The bituminous primer shall be sprayed uniformly in
accordance with Clause 501 of MORT & H specifications. The method
of application of the primer will depend on the type of equipment to be
used, size of nozzles, pressure at the spray bar bars speed of forward
movement. The contractor shall demonstrate at a spraying trial, that the
equipment and method to be sued is capable of producing a uniform
spray, within the tolerances specified.
8.4.4 Curing of primer and opening to traffic :
A primed surface shall be allowed to cure for at least 24 hours or such
other period as is found to be necessary to allow all the volatile to
evaporate before any subsequent surface treatment of mix is laid. Any
unabsorbed prime shall first be blotted with an application of sand,
using the minimum quality possible. A primed surfaces shall not be
opened to traffic other than that necessary to lay the next course. A very
thin layer of clean san may be applied to the surface of the primer, to
prevent the primer picking up under the wheels of the paver and the
trucks delivering bituminous material to the paver.
8.4.5 Tack coat :
Over the primed surface, a tack coat should be applied in accordance
with Clause 503 of MORT & H (Fourth Revision).
8.5 QUALITY CONTROL OF WORK :
For control of the quality of materials supplied and the works carried
out, the relevant provisions of Section 900 of MORT & H (Fourth
Revision) shall apply.
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8.6 ARRANGEMENTS FOR TRAFFIC :
During construction operations arrangement for traffic shall be made in
accordance with the provisions of Clause 112 of MORT & H
Specifications.
8.7 MEASUREMENT OF PAYMENT :
Prime coat shall be measure in terms of surface area of application in
square metres.
8.8 RATE :
The contract unit rate for coat with adjustments as described in Clause
502.7 of MORT & H shall be payment in full for carrying out the
required operations including full compensation for all components
listed in Clause 401.8 (i) to (v) of MORT&H Specifications and as
applicable to the work specified in these specifications. Payment shall
be made on the basis of the provision of primer coat at an application
of rate 0.6 kg. to 0.9 kg. per square metre, with adjustment, plus or
minus, for the variation between this amount and the actual amount
approved by the Engineer after the preliminary trials referred to in
Clause No. 502.4.3 of MORT & H. Specification.
9.0 BITUMINOUS BOUND MACADAM (BBM)
Providing and laying Bitumen Bound Macadam surface in 75,
thickness including supplying all materials, spreading 40 mm metal
layers, heating and spraying bitumen at the rate 250 kg/100 sqm
and spreading 12 mm size key aggregate using 60-70 grade
bitumen and compaction with vibratory roller etc. complete.
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9.1 General :
The work consists of supply of all materials and labour required for
providing and laying bituminous bound macadam surface for
compacted thickness of 75 mm This item include preparing the
existing road surface to receive the bituminous bound macadam
course, spreading of 40 mm size metal layers in required thickness
with compaction with vibratory roller, heating and spreading
bitumen with equipment plant etc. Spreading key aggregates 12mm
chips and final compaction with vibratory roller etc. complete. The
work shall be finished in accordance with the requirements of this
specification and in close conformity with grades, lines, cross
sections and thickness as per approved drawing or as directed by the
Engineer in charge.
9.2 MATERIALS :
9.2.1 Bitumen :
The bitumen shall be paving bitumen or suitable penetration grade
within the range S-35 to S-65 or A-35 to A-65 (30/40 to 60/70) as
per Indian Standard Specifications for “Paving bitumen” IS:73-1962.
The actual grade of bitumen be used shall be decided by the
Engineer, appropriate to the region traffic, rainfall and other
environmental conditions.
9.3 AGGREGATES :
The aggregates shall comprise of 40 mm size and broken stone
standard specification clause Rd. 22.3.2, Page 201 of edition 1979,
12 mm size crushed aggregate satisfying standard specifications
clause Rd.41.3.2 Page 216 of edition 1979 for respective size of
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crush metal. The aggregate shall be free from disintegrated pieces,
organic or other deleterious set for in table 500/4 of Ministry of
Surface Transport’s specifications for Road and Bridges edition June
2001.
9.4 PROPORTIONING OF MATERIALS :
The quantities of aggregates and bitumen required for the work of
75 mm compacted bituminous bound macadam is detailed below :
a. 40mm size hand broken metal 9.00 cmt. Per 100 sq.mt.
b. 20mm size crushed metal 1.50 cmt. Per 100 sq.mt.
c. 12mm size key aggregate 1.80 cmt. Per 100 sq.mt.
d. Bitumen 250 kg. per 100 sq.mt.
9.5 PREPARATIONS OF BASE :
The road surface shall be swept clean of all dirt, dust and other
loose and foreign matter. The work shall be performed on such
widths and lengths as directed by Engineer-in-charge and may
required scarifying of existing layer, filling of pot holes etc. The edge
line may be marked with stakes (formed or murum or metal 25 cm
to 30 cm width)
Tack Coat:
Tack Coat our clean surface shall be applied with mechanical
sprayer.
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9.6 SPREADING AND COMPACTION :
9.6.1 Spreading of 40 mm size metal :
40 mm Size hand broken metal shall be spread evenly at the rate of
9 cu.m. per 100 sq.m. of area so as to form layer for camber
correction over the width of road specified on plans. Any foreign
matter, organic matter, dust, grass etc. shall be removed
immediately. The sections shall be checked with camber board,
straight edge batten etc. Any irregularities shall be made good by
adding aggregates in case of depressions and removing aggregates
from high spots.
Compaction of 40 mm size metal :
The surface of 40mm metal layer after brought to necessary grades
shall be rolled with the use of 8 to 10 tons power roller. Rolling shall
be commence from the edges and progress towards the enter
longitudinally exception super elevated portion it shall progress from
the lower to upper edge parallel to the centre line of pavement.
When the roller has passed over the whole area as prepared once,
any high spots or depressions which become apparent shall be
corrected by removing or adding aggregates. The rolling shall then
continued till the entire surface has been rolled to desired
compaction such that there is no crushing of aggregates and all
roller marks have been eliminated. The each pass of roller shall
uniformly overlap not less than one third of the track made in the
preceding pass.
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9.6.2 Spreading of 20 mm size Metal:
20mm size crushed metal shall be evenly spread at the rate of 1.5
Cum. per 100 Sq.mt. of area over the 40 mm size hand broken
metal compacted.
9.6.3 Compaction after Spreading of 20 mm size metal:
The surface of 20 mm metal layer after brought to necessary grades
and sections shall be rolled with the use of vibratory roller. Rolling
shall commence from the edges and progress towards the centre
longitudinally except on super elevated portion it shall progress from
the lower to upper edge parallel to the centre line of pavement.
When the roller has passed over the whole area as prepared once,
any high spots of depression which become apparent shall be
corrected by removing or adding aggregates. The rolling shall then
continued till the entire surface has been rolled to desired
compaction such that there is no crushing of aggregates as all roller
marks have been eliminated. The each part of roller shall uniformly
overlap not less than one third of the track made in the preceding
pass.
9.6.4 Bitumen Application :
Bitumen to be used shall be got approved from Engineer in charge.
Bitumen of IS grade S-35 needs heating to a temperature range
between 177 degrees to 191 degrees. Bitumen other than grade IS
S-35 shall be heated to a temperature appropriate to that grade.
Bitumen shall be applied through a pressure sprayer uniformly at the
rate of 250 kg. Per 100 sq.mt. To ensure correct application of
bitumen being sprayed, known dimensioned area be checked for
use of bitumen and accordingly dosage may be increased or
decreased as the case may be.
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9.6.5 Key Aggregates :
On completion of bitumen application, 12 mm size key aggregate
shall be spread immediately at a uniform rate of 1.8 cum per 100
sq.mt of area when entire surface is in hot condition. Brooms shall
be used to ensure even distribution of key aggregates.
9.6.6 Final Compaction :
Immediately after spreading of bituminous and spreading of
aggregates shall be spread immediately at a uniform rate of 1.8
cum per 100 sq.mtr. of area when entire surface is in not condition.
Brooms shall be used to ensure even distribution of key aggregates.
Immediately after spraying of bitumen and spraying of key
aggregates the surface shall be rolled with a power roller to obtain
full compaction and to force the blindage of key aggregates in to the
interstices of the course aggregate. The rolling shall continue till the
asphalted surface hardens and key aggregates stop moving under
power roller.
9.7 Surface finish and quality control :
The surface finish shall conform to requirements of Clause 902 of
specifications for Roads and Bridges by Ministry of Road Transport &
Highways. Quality control test and their frequencies shall be as per
table 900-3 of specifications for Road and Bridges by Ministry of
Road Transport & Highways.
9.8 Arrangement of Traffic :
During the period of execution, arrangement of traffic shall be
carried out according to the Clause 112 of specification for Roads
and Bridges by Ministry of Road Transport and Highways.
9.9 Item to Include :
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1) Labour and materials required for preparing surface.
2) Supplying and spreading and compaction of 40mm hand
broken size metal and 20mm crushed metal.
3) Supplying, heating and spraying of bitumen.
4) Supplying and spreading and compaction of 12 mm crushed
metal.
9.10 Mode of Measurement for Payment :
The Contract unit rate for finished work of bituminous bound
macadam is in full for carrying out all operations. The finished work
shall be measured in Sqm.
10.0 TACK COAT
10.1 SCOPE
This work shall consist of application of a single coat of low viscosity
liquid bituminous material to an existing road surface preparatory to
the superimposition of a bituminous mix, when specified in the contract
or instructed by the Engineer.
10.2 MATERIALS
10.2.1 Binder
The binder used for tack coat shall be bitumen emulsion complying with
IS 8887 of a type and grade as specified in the contract or as directed
by the Engineer. The use of cutback bitumen as per IS 217 shall be
restricted only for sites at sub-zero temperatures or for emergency
applications as directed by the Engineer.
10.3 WEATHER AND SEASONAL LIMITATIONS
Bituminous material shall not be applied to a wet surface or during a
dust storm or when the weather is foggy, rainy or windy or when the
temperature in the shade is less than 100C. Where the tack coat
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consists of emulsion, the surface shall be slightly damp, but not wet.
Where the tack coat is of cutback bitumen, the surface shall be dry.
10.4 CONSTRUCTION:
10.4.1 Equipment:
The tack coat distributor shall be a self propelled or towed bitumen
pressure sprayer with flow meter arrangement, equipped for spraying
the material uniformly at a specified rate. Hand spraying of small
areas, inaccessible to the distributor, or in narrow strips, shall be
sprayed with a pressure hand sprayer, or as directed by the Engineer.
10.4.2 Preparation of base:
The surface on which the tack coat is to be applied shall be clean and
free from dust, dirt and any extraneous material, and be otherwise
prepared in accordance with the requirements of Clause-501.8 and
902 of MORT&H specifications (Fourth Revision) as appropriate.
Immediately before the application of the tack coat, the surface shall be
swept clean with a mechanical broom, and high pressure air jet, or by
other means as directed by the Engineer.
10.4.3 Application of Tack Coat :
The application of tack coat shall be at the rate as specified in the
Schedule, and shall be applied uniformly. The normal range of
spraying temperature for a bituminous emulsion shall be 200C to 700C
and for cutback 500C to 800C if RC-70/ MC-70 grade is used. Where a
geosynthetic is proposed for use, the provisions of Clauses 703.3.2 and
703.4.4 of MORT&H specifications shall apply. The method of
application of the tack coat will depend on the type of equipment to be
used, size of nozzles, pressure at the spray bar, and speed of forward
movement. The contractor shall demonstrate at a spraying trial, that the
equipment and method to be used is capable of producing a uniform
spray, within the tolerances specified. The bitumen sprayer shall have a
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flow meter arrangement (duly calibrated) for measurement/rate of
spraying and reconciliation of material.
Where the material to receive an overlay is a freshly laid bituminous
layer, that has not been subjected to traffic, or contaminated by dust, a
tack coat is not mandatory where the overlay is completed within two
days.
10.4.4 Curing of tack coat:
The tack coat shall be left to cure until all the volatiles have evaporated
before any subsequent construction is started. No plant or vehicles shall
be allowed on the tack coat other than those essential for the
construction.
10.5 QUALITY CONTROL OF WORK
For control of the quality of materials supplied and the works carried
out, the relevant provisions of Section 900 of MORT&H specifications
(Fourth Revisions) shall apply.
10.6 ARRANGEMENT FOR TRAFFIC:
During the period of construction, the arrangement for traffic shall be
made in accordance with the provisions of Clause 112 of MORT&H
specifications (Fourth Revision).
10.7 MEASUREMENT FOR PAYMENT:
Tack coat shall be measured in terms of surface area of application in
square metres.
10.8 RATE:
The contract unit rate for tack coat shall be payment in full for carrying
out the required operations including for all components listed in
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Clause 401.8 (i) to (v) of MORT&H specifications (Fourth Revision) and
as applicable to the work specified in these specifications. The rate shall
cover the provision of tack coat as per Schedule “A”.
11.0 SEAL COAT
11.1 Scope
11.1.1 This work shall consist of application of a seal coat for sealing the
voids in a bituminous surface laid to the specified levels, grade and
cross fall (camber).
11.1.2 Seal coat shall be of either of the two types as specified below.
(A) Liquid seal coat comprising of an application of a layer of
bituminous binder followed by a cover of stone chip.
(B) Premixed seal coat comprising of a thin application of fine
aggregate premixed with bituminous binder.
11.2 Materials
11.2.1 Binder :
The requirements of Clauses 511.1.2.1 & 511.2.2.1 of MORT&H
Specifications shall apply.
The quantity of bitumen per 10 sqm., shall be 22 kg. for Type A seal
coat.
11.2.2 Stone chips for Type A seal coat :
The stone chips shall consist of angular fragments of clean, hard,
tough and durable rock of uniform quality throughout. They should
be free soft or disintegrated stone, organic or other deleterious
matter. Stone chips shall be of 6.7 mm size defined as 100 percent
passing through 11.2 mm sieve and retained on 2.36 mm sieve. The
quantity used for spreading shall be 0.09 cubic metre per 10 square
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metres area. The chippings shall satisfy the quality requirements in
Table 500-3 of MORT&H specification except that the upper limit for
water absorption value shall be 1 percent.
11.2.3 Aggregates for type B seal coat :
The aggregates shall be sand or grit and shall consist of clean, hard,
durable, uncoated dry particles and shall be free from dust, soft or
flaky/elongated material, organic matter or other deleterious
substances. The aggregate shall pass 2.36 mm sieve and be
retained on 180 micron sieve. The quantity used for premixing shall
be 0.06 cubic metre per 10 square metre area.
11.3 Construction Operations
11.3.1 Weather and seasonal limitations :
The requirements of Clause 501.5.1 of MORT&H specifications shall
apply.
11.3.2 Preparation of base :
The seal coat shall be applied immediately after the laying of
bituminous course which is required to be sealed. Before application
of seal coat materials, the surface shall be cleaned free of any dust
or other extraneous matter.
11.3.3 Construction of type A seal coat :
The bitumen shall be heated to 1500C - 1630C and sprayed at the
rate specified on the dry surface in a uniform manner with a self
propelled mechanical sprayer as described in the Manual for
Construction and Supervision of Bituminous works.
Immediately after the application of binder, stone chips, which shall
be clean and dry, shall be spread uniformly at the rate specified on
the surface preferably by means of a self propelled or towed
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mechanical frit spreader so as to cover the surface completely. If
necessary, the surface shall be brushed to ensure uniform spread of
chips.
Immediately after the application of the cover material, the entire
surface shall be rolled with a 8-10 tonne smooth wheeled steel
roller, 8-10 tonne static weight vibratory roller, or other equipment
approved by the Engineer after laying trials if required. Rolling shall
commence at the edges and progress towards the center except in
super-elevated and uni-directional cambered portions where it shall
proceed from the lower edge to the higher edge. Each pass of the
roller shall uniformly overlap not less than one-third of the track
made in the preceding pass. While rolling is in progress, additional
chips shall be spread by hand in necessary quantities required to
make up irregularities. Rolling shall continue until all aggregate
particles are firmly embedded in the binder and present a uniform
closed surface.
11.3.4 Construction of type B seal coat :
Mixer of appropriate capacity and type approved by the Engineer
shall be used for preparation of mixed material. The plant shall have
separate dryer arrangements for heating aggregate.
The binder shall be heated in boilers of suitable design, approved by
the Engineer to the temperature appropriate to the grade of bitumen
or as directed by the Engineer. The aggregates shall be dry and
suitably heated to a termperature between 1500C and 1600C or as
directed by the Engineer before these components are placed in the
mixer. Mixing of binder with aggregates to the specified proportions
shall be continued until the latter are thoroughly coated with the
former.
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The mix shall be immediately transported from the mixing plant to
the point of use and spread uniformly on the bituminous surface to
be sealed.
As soon as a sufficient length has been covered with the premixed
material, the surface shall be rolled with an 8-10 tonne smooth
wheeled roller. Rolling shall be continued until the premixed material
completely seals the voids in the bituminous course and a smooth
uniform surface is obtained.
11.4 Opening to Traffic
In the case of type B seal coat, traffic may be allowed soon after
final rolling when the premixed material has cooled down to the
surrounding temperature. In the case of Type A seal coat, traffic shall
not be permitted to run on any newly sealed area until the following
day. In the special circumstances, however, the Engineer may open
the road to traffic immediately after rolling, but in such cases traffic
speed shall be rigorously limited to 16km. per hour until the
following day.
11.5 Surface Finish and Quality Control of work
The surface finish of construction shall conform to the requirements
of Clause 902 of MORT&H specifications.
For control on the quality of materials supplied and the works carried
out, the relevant provisions of Section 900 of MORT&H Specifications
shall apply.
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11.6 Arrangement for Traffic :
During the period of construction, arrangements for traffic shall be in
accordance with the provisions of Clause 112 of MORT&H
Specifications.
11.7 Measurements for Payment
Seal Coat, Type A or B shall be measured as finished work, over the
area specified to be covered, in square meters at the thickness
specified in the Contract.
11.8 Rate :
The contract unit rate for seal coat Type A or B shall be payment in
full for carrying out the required operations including full
compensation for all components listed in Clause 501.8.8.2 (i) to (xi)
of MORT&H Specifications.
12.0 Providing Lowering, Laying and Jointing spigot socketed RCC pipe of
NP-2 class of various diameter etc. complete.
12.1 GENERAL :
The item provides for the supply and fixing of the spun concrete
pipes of the specified class and diameter in position for the Cross
Drainage works including necessary collars, conveyance and fixing
in cement mortar 1:2/ Socket Spigot pipes.
12.2 MATERIALS:
Concrete pipes shall be of the class and diameter mentioned in the
item and shall comply with I.S. 458-1971.
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The collars shall be of appropriate size for fixing of the concrete
pipes specified on the drawings and shall comply with the I.S. 458-
1971.
The cement mortar shall comply with the specification No. B.5 (a),
proportion of cement to sand being 1:2.
12.3 Laying:
The excavation shall be confirming to Bd. V.1.3 of Red Book. The
pipes shall be laid to lines, levels & slopes indicated on the drawings
or as ordered by the Engineer. The handling, laying and jointing of
the concrete pipes shall confirm to IS: 783-1985.
The refilling shall be done as per Bd.V.1.5. of Red Book.
12.4 Testing :
Testing shall be as per IS: 458-1988
12.5 FIXING :
The handling and laying of the concrete pipes shall comply with I.S.
783-1985 code of practice of laying concrete pipes.
The pipes shall be laid to the lines and levels shown on the drawings
and the slope shall be 1 in 100 towards the down stream unless
other slopes are specified on the drawing or as ordered by the
Engineer.
The ends of the pipes shall be flush with face of masonry or bell
mouthed if so indicated on the drawings or ordered by the Engineer.
Pipe of non-standard length may be used when standard length
pipes do not fit in between the face of walls. Otherwise extra length
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of standards pipes may be left projecting beyond face of masonry on
the downstream. Such extra length will not be paid for.
Diversions of the road if found necessary, shall be provided
according to BR.1 at the cost of the contractor unless separately
provided in the tender.
The collar/Socket Spigot type joints be cured satisfactorily. Till then
the filling around shall not be done.
12.6 ITEM TO INCLUDE :
1) Supply, conveyance and fixing of the spun concrete pipes
including collars/Socket Spigot type, fixing in cement mortar
1:2 to the line, levels and slope/rubber gasket ring.
2) All labour materials, use of equipment and tools for
completing the item satisfactorily.
12.7 MODE OF MEASUREMENT & PAYMENT :
The measurement shall be for the length of pipes provided and fixed
with collar/Socket Spigot from the outside of one face walls to the
outside of the other face wall, limiting the length to that specified in
the plan, or ordered by the Engineer.
The length shall be measured correct up to a centimeter. The rate
shall be inclusive of all the projecting lengths, if any projections
being ignored in the measurement.
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13.0 PRECAST FACTORY MADE CONCRETE KERB STONES:
Providing PCC precast factory made kerb stone of 500x400x150 mm
size in M-25 grade of concrete using design mix with minimum cement
content as per IS 456.
Note:
PCC Factory made Kerb Stone, RCC Factory made Parabolic Kerb
Stone, Pre Cast RCC Beam, Pre Cast RCC Slab to be procured from
manufacturing agency approved by CIDCO or Agency has to be got
approval of the product from the competent authority.
13.1 MANUFACTURE:
Pre-cast factory made PCC in M-25 grade concrete and of specified
dimensions shall be manufactured in accordance with IS 5758-1970
and generally in accordance with specifications of concrete works as
specified.
13.2 SIZES :
The sizes of kerb stones be as per detailed under Schedule “A”. The
concrete shall consist of grade M-25 laid to the dimensions, lines and
levels shown in the drawing and well compacted by ramming or other
means. The kerb stone then the embedded into cement concrete of
grade M-25 to a minimum thickness of 100 mm all around including
filling in joints with C.M. 1:3 and finishing with neat cement slurry etc.
complete as specified or as directed by the Engineer. After the line and
levels have been checked to be within the specified tolerance the
haunching will be placed taking care that the line and level of the kerbs
is not displaced during the process. All straight kerbs, circular kerbs,
quadrants or other kerbs shall be laid within a vertical or horizontal
tolerances of 3mm from the true line or level.
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13.3 General :
The specifications pertains to cement concrete of the specified
proportion to be laid in raft of strip foundations, thin bedding below
RCC foundations, bedding below paved floors, etc.
13.4 Preparation of Foundation for laying concrete :
Passing foundation :
The foundation shall be passed in writing by the Engineer before
concreting started. The bed of the foundation trenches shall be cleaned
of loose materials and well wetted, if dry to prevent absorption of water
from the green concrete.
In the case of paved floors plinth filling and rubble soling, if any shall
have been well compacted and brought to the required levels etc. and
passed by the Engineer before concrete is allowed to be laid.
13.5 Dewatering:
If the area on which the concrete is to be placed is under water, water
shall be removed as specified for Bd. A.9 of Red Book. Unless
dewatering is separately provided for in the tender, the rate for concrete
shall include the cost of dewatering also.
13.6 Concreting:
The cement concrete shall comply with specification No. B.6 of Red
book for ordinary cement concrete subject to the following:
13.6.1 Proportion:
Proportion of material shall be as mentioned in the wording of the item.
13.6.2 Coarse aggregates :
Coarse aggregates shall be broken from sound stones of the type
mentioned in the item and of approved quality. Maximum size of
aggregate shall not exceed 20 mm.
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13.6.3 Forms:
If the trenches are dug exactly to the dimensions of footings, no forms
will be necessary. But the sides and bottom of the trenches shall be
moistened to the extent necessary to prevent absorption of water from
the concrete.
If, however, footings are dug to dimensions larger than those shown on
the drawings or as directed by the Engineer, forms complying with
specifications No.B.6.5 (b) of Red book shall be used at the contractor's
cost. The side forms shall be removed 48 hours after placement of
concrete.
13.6.4 Mixing :
The concrete shall be mixed in mechanical mixers as specified in B.6.4
of Red Book.
13.6.5 Compaction :
Compaction shall be done with mechanical vibrators. In case of
concrete bedding below paved floors, a screed board shall be used to
get a level or sloped surface as required for the top of the bedding. All
laitance and loose aggregate, if any shall be removed and top surface
left slightly rough to improve bond with the topping.
13.6.6 Tests:
If the Engineer so directs, 6 cubes of 15 cm. Size shall be cast on the
first day tested for compression at 7 and 28 days. Later on, if the
Engineer so directs, 3 cubes shall be tested for every 60 cubic meters of
the concrete cast. No tests need be made for 1:5:10 cement concrete. If
there is doubt the strength of 1:3:8 and 1:4:8 concrete/ tests may be
carried out and their cost borne by the Department if the results are
satisfactory and by the contractor if they are unsatisfactory.
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13.7 Mode of Measurement and Payment:
The contract rate shall be for a unit of one cubic meter of concrete. The
concrete shall be measured foe its strengih, breadth and depth, limiting
dimensions to those specified on the plans or as ordered by the
Engineer. No deductions shall be made for reinforcement in concrete in
RCC work. Individual dimensions shall be measured correct to two
decimals and quantities shall be worked out correct upto two places of
decimals of a cubic meter.
13.8 MEASUREMENT FOR PAYMENT :
Measurement shall be in linear meter up to 0.01 mt. of specified size of
kerb stone provided.
13.9 RATE:
The unit rate shall include all materials, labour, tools & plants etc.
including transportation to site, unloading, excavation, laying,
curing, oil painting, disposal off unsuitable material etc. all required
to complete the job as per drawing.
14.0 PRECAST PARABOLIC KERB STONE
14.0(i) Providing & fixing parabolic shape RCC precast-factory made M25
Grade kerb stone using design mix with minimum cement content as
per IS: 456. (As per IS 456 of size 500/200/850 mm as per detailed
design and drawing including excavation, fixing in PCC of M-15grade
bed 100 mm thick)
Note:
PCC Factory made Kerb Stone, RCC Factory made Parabolic Kerb
Stone, Pre Cast RCC Beam, Pre Cast RCC Slab to be procured from
manufacturing agency approved by CIDCO or Agency has to be got
approval of the product from the competent authority.
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14.1 General :
The specifications pertains to cement concrete of the specified
proportion to be laid in raft of strip foundations, thin bedding below
RCC foundations, bedding below paved floors, etc.
14.2 Preparation of Foundation for laying concrete :
Passing foundation :
The foundation shall be passed in writing by the Engineer before
concreting started. The bed of the foundation trenches shall be cleaned
of loose materials and well wetted, if dry to prevent absorption of water
from the green concrete.
In the case of paved floors plinth filling and rubble soling, if any shall
have been well compacted and brought to the required levels etc. and
passed by the Engineer before concrete is allowed to be laid.
14.3 Dewatering:
If the area on which the concrete is to be placed is under water, water
shall be removed as specified for Bd. A.9 of Red Book. Unless
dewatering is separately provided for in the tender, the rate for concrete
shall include the cost of dewatering also.
14.4 Concreting:
The cement concrete shall comply with specification No. B.6 of Red
book for ordinary cement concrete subject to the following:
14.4.1 Proportion:
Proportion of material shall be as mentioned in the wording of the item.
14.4.2 Coarse aggregates :
Coarse aggregates shall be broken from sound stones of the type
mentioned in the item and of approved quality. Maximum size of
aggregate shall not exceed 20 mm.
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14.4.3 Forms:
If the trenches are dug exactly to the dimensions of footings, no forms
will be necessary. But the sides and bottom of the trenches shall be
moistened to the extent necessary to prevent absorption of water from
the concrete.
If, however, footings are dug to dimensions larger than those shown on
the drawings or as directed by the Engineer, forms complying with
specifications No.B.6.5 (b) of Red book shall be used at the contractor's
cost. The side forms shall be removed 48 hours after placement of
concrete.
14.4.4 Mixing :
The concrete shall be mixed in mechanical mixers as specified in B.6.4
of Red Book.
14.4.5 Compaction :
Compaction shall be done with mechanical vibrators. In case of
concrete bedding below paved floors, a screed board shall be used to
get a level or sloped surface as required for the top of the bedding. All
laitance and loose aggregate, if any shall be removed and top surface
left slightly rough to improve bond with the topping.
14.4.6 Tests:
If the Engineer so directs, 6 cubes of 15 cm. Size shall be cast on the
first day tested for compression at 7 and 28 days. Later on, if the
Engineer so directs, 3 cubes shall be tested for every 60 cubic meters of
the concrete cast. No tests need be made for 1:5:10 cement concrete. If
there is doubt the strength of 1:3:8 and 1:4:8 concrete/ tests may be
carried out and their cost borne by the Department if the results are
satisfactory and by the contractor if they are unsatisfactory.
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14.5 Interval for Starting Masonry :
Masonry, RCC pipes will be allowed to be placed on the concrete 48
hours after completion of concrete. Side filling between the concrete
and sides of excavation shall also be allowed after 48 hours after
placement of concrete. But the material adjoining the concrete shall be
kept wet for the duration of the curing period.
Paving of RCC work over concrete bedding shall be allowed after the
concrete is sufficiently set.
14.6 Item to include :
1) All labour, materials, use of equipment, tools and plant,
installing and removal of scaffolding, false work and forms and
bracing necessary for the satisfactory completion of the item
except reinforcement steel.
2) Providing cement concrete of specified proportion including
transporting, placing and compacting, curing, finishing to the
dimensions and shape shown on the plans to as ordered by the
Engineer.
3) Necessary sampling and tests for materials and concrete.
4) Compensation for injury to person and damages to work or
property.
14.7 Mode of Measurement and Payment:
The contract rate shall be for a unit of one cubic meter of concrete. The
concrete shall be measured foe its strength, breadth and depth, limiting
dimensions to those specified on the plans or as ordered by the
Engineer. No deductions shall be made for reinforcement in concrete in
RCC work. Individual dimensions shall be measured correct to two
decimals and quantities shall be worked out correct upto two places of
decimals of a cubic meter.
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15.0 Providing and constructing B.B. Masonry chamber of 1.2 x 1.2 M.
internal size and depth up to 1.2m. with precast R.C.C. slab cover
with 15 cm. thick 1:3:6 proportion P.C.C. bedding, including
excavation, B.B. Masonry in C.M. 1:5 proportion precast R.C.C
frame and cover etc. complete.
15.1 This item includes all materials and labour mentioned hereafter,
bricks, RCC Cover, excavation, laying cement concrete, B.B.
masonry, plastering and refilling. The precast cover shall be tested
and the results for approved before fixing the same.
15.2 Brick Masonry:
Burnt brick shall be the best available locally and kiln burnt, the
minimum compressive strength shall be 60 kg/cm2. Bricks shall be
tested as per relevant IS for every 50,000 Nos. The sizes and
physical requirements of bricks shall be as per standard
specifications of B & C Department, Govt. of Maharashtra and
conforming to IS: 1877.
15.3 Joints of brick work shall be properly raked out cleaned and washed
before plastering. Top of walls having P.C.C. (1:3:6) for fixing
R.C.C. cover shall be finished with C.M. 1:5 15 mm thick. The item
shall be carried out as directed by Engineer.
15.4 ITEM TO INCLUDE:
1) Excavating, concreting foundation, constructing brick masonry,
laying 1:3:6 concrete forming channels or laying half round
slat glazed stoneware pipes, plastering the inside faces, fixing
cast iron frames and lid in concrete.
2) All necessary labours, materials and use of tools.
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15.5 MODE OF MEASUREMENT & PAYMENT:
The contract rate shall be for one inspection chamber of the
specified size constructed as detailed above. The measurement shall
be for the number of such chambers constructed.
16.0 Conducting lab CBR test as per IS2720 (Part-16) 1987 The item shall
includes necessary cost for sample collection and transporting it to soil
testing lab. The rate includes for testing of minimum 3 specimen. If the
test results of initial 3 specimen deviate more than that specified in Table 2
of clause No. 3, 4, 6, 4 of IRC 37 (2000) then additional 3 specimen shall
be got tested at no extra cost. The rate includes for all necessary ancillary
tests mentioned in appendix “A” of IS 2720 (Part-16) viz. Proctor density
test, swell pressure test etc. The appropriate surcharge Wt. shall be
provided while testing the specimen. The item shall include all cost of
necessary excavation at site. The test results shall be submitted in report
form with observation sheet graph, tabular form and inference it any.
The work shall be carried out as per description in Schedule “A” (Bill of
quantities) and/or as directed by Engineer.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
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PARTICULAR SPECIFICATIONS STORM WATER DRAIN
1.0 GENERAL :
The particular specifications are to be read in conjunction with
specifications contained in the description of items of Schedule ‘A’,
Specifications contained in Standard Specifications’ published by the
Public Works & Housing Department of Government of
Maharashtra, relevant Indian Standard Specifications and drawings.
Generally, specifications given in the particular specifications have
precedence over any other specifications (except Schedule ‘A’
description). In case of ambiguities or conflicting specifications in
various documents mentioned in the tender, where particular
specifications do not cover trade items included in the contract, the
specifications given in ‘Standard Specifications’ or relevant I.S.
specifications shall apply.
2.0 EXCAVATION SOIL, MURUM ETC. :
Excavation for foundation, drains etc. shall be excavated to exact
width, length and depth shown on drawings, extra width for working
space if any will be at the contractor’s cost. Extra depth if any shall
be brought up by (1:3:6) cement concrete filling and width filled in
by earth thoroughly rammed or as otherwise as directed by Engineer
without any extra cost. Excavated material shall be used to fill in
trenches or it shall be spread elsewhere on or near the site of work
including watering, ramming and consolidating or removal from site
free of charge as may be ordered. Contractor shall make provision
for temporarily supporting utility facilities service, trenches,
separating and stacking serviceable material neatly, shoring,
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pumping, bailing out drainage water whether subsoil or rain water.
General excavation will include all strata except rock.
2.1 Excavation in hard rock :
Anything that does not come out with shovels and pickaxes but
required blasting, chiseling or wedging for removal shall be treated
as rock. Boulders have 0.5 cu.m. will be treated as rock. Rubble
shall be stacked properly in heaps.
2.1.1 Contractor shall obtain license from District authorities for carrying
out blasting work as well as for obtaining, transporting and storing
explosives as per the “Explosives Rules 1940” or as amended. He
shall purchase the explosives, fuses, detonators etc. only from
licensed dealer. He shall maintain the account of explosive etc.
purchased and used by him. He shall be responsible for safe
custody or proper accounting of explosive materials. Engineer shall
have access to check stores of explosives and accounts thereof. All
precautions shall be taken and all rules complied with.
2.1.2 Where blasting is not practicable or prohibited, excavation shall be
done by wedging or chiseling and it shall be restricted to the quantity
required to the minimum. Of trenches exceed those shown in
drawings, the excess quantity shall not be paid for.
3.0 EARTH FILLING :
Filling shall be done worth good earth, murum, stone chips. It shall
be free from salts, organic matter, black cotton or slushy earth and
combustible material. All clods shall be broken.
3.1 Filling in trench shall be done in layers not exceeding 300 mm.
Apply watered and consolidated by ramming with iron or wooden
rammers weighing 7 to 8 kgs. And having base 30 cm. Sq. or 20
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cm. Diameter. The filling trenches, the finished level surface shall be
flooded with water for at least 24 hours allowed to dry and then
rammed and consolidated after making good any settlement in
order to avoid settlement at a later stage. Finished level of filling
shall be kept to a slope intended to be given to the ground.
4.0 RUBBLE SOLING :
It shall be clean, hard and obtained from trap or ballast stone.
Stone aggregate from trap or ballast stone) of 200 to 230 mm shall
be used. It shall be clean hard and reasonably free from
laminations. The rate shall be inclusive of packing with smaller stone
chips. Filling with grit or sand, watering the surfaces and
consolidating each layer with 8/10 tonnes roller or manually as
directed.
5.0 DIMENSIONS :
Figured dimensions of drawings shall supersede measurements by
scale and drawings to a large scale shall take precedence over those
to a smaller scale. Special dimensions, or directions in the
specifications shall supersedes all other. All dimensions shall be
checked on site prior to execution. The dimension where stated do
not allow for waste, lap, joints etc. but the contractor shall provide at
his own cost sufficient labour and materials to cover such waste, pals
joints etc.
The levels, measurements and other information concerning the
existing site as shown on the drawings are believed to be correct, but
the contractor should verify them for himself and also examine the
nature of the ground as no claim or allowance whatsoever will be
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entertained on account of any errors or omissions in the levels or the
description of the ground levels or strata turning out different from
what was expected or shown on the drawings.
6.0 SETTING OUT WORKS :
The contractor shall set out the works indicated in the conditions of
contract. The contractor shall provide suitable stones with fall tops
and building the same in concrete for temporary bench marks. All
the pegs for setting out the works and fixing the levels required for
the execution thereof shall if desired by Engineer, likewise be built in
masonry at such places and in such a manner as the Engineer-in-
charge may direct. The contractor shall carefully protect and
preserve all bench marks and other marks used in setting out the
works.
7.0 MATERIAL :
7.1 Quality :
All materials used in the works shall be of the best quality of their
respective kinds as specified therein, obtained from sources and
suppliers approved by the Engineer and shall comply strictly with the
test prescribed hereafter, or where tests are not laid down in the
specifications with the requirements of the latest issues of the relevant
Indian Standards.
7.2 Sampling and testing :
All materials used in the works shall be subjected to inspection and
test in addition to test certificates. Samples of all materials proposed
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to be employed in permanent works shall be submitted to the
Engineer-in-charge for approval before they are brought to the site.
7.2.1 Samples provided to the Engineer for their retention are to be
labeled in boxes suitable for storage. Materials or workmanship not
corresponding in character and quality with approved samples will
be rejected by the Engineer.
7.2.2 Samples required for approval and testing must be supplied
sufficiently in advance to allow for testing and approval, due
allowance being made for the fact that if the first samples are
rejected, further samples may be required. Delay to the works
arising from the late submission of samples will not be acceptable as
a reason for delay in completion of the works.
7.2.3 Materials shall be tested before leaving the manufacturer’s premises,
quarry or source, wherever possible. Materials shall also be tested
on the site and they may be rejected if not found suitable or in
accordance with the specification, notwithstanding the results of the
tests at the manufacturer’s works or elsewhere or test certificate or
any approval given earlier. The contractor will bear all expenses for
sampling and testing, whether at the manufacturer’s premises at
source at site or at any testing laboratory or institution as directed by
the Engineer-in-charge. No extra payment shall be made on this
account.
7.3 Dispatch of materials :
Materials shall not be dispatched from the manufacturer’s works to
the site without written authority from the Engineer.
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7.4 Test Certificate :
All manufacturer’s certificate of test, proof sheets etc. showing that
the materials have been tested in accordance with the requirement of
this specification, items and drawing and of the appropriate Indian
Standards are to be supplied free of charge on request to the
Engineer.
7.5 Rejection :
All materials that have not been found to confirm to the
specifications will be rejected forthwith and shall be removed from
the site by the contractor at his own cost. The Engineer shall have
power in cause the contractors to purchase and use such materials
from any particular source, as may in his opinion be necessary for
the proper execution of the work.
8.0 STORING OF MATERIALS AT SITE :
All the materials used in the works shall be stored on racks, support,
in bins, under cover etc. as appropriate to prevent deterioration or
damage from any cause whatsoever to the entire satisfaction of the
Engineer.
8.1 The materials shall be stored in a proper manner at places at site
approved by the Engineer. Should be the place where materials is
stored by the contractor be required by the employer for any other
purpose, the contractor shall forthwith remove the materials from
that place at his own cost and clear the place for the use of the
employer i.e. CIDCO.
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9.0 WATER :
Water from approved source :
Clean fresh potable water only shall be used for the works. The
water shall be free from any deleterious matter in solution or in
suspension and be obtained from an approved source. The quality
of water shall confirm to I.S. 456. Contractor has to make his own
arrangement for water.
9.1 Storing :
The contractor shall make his own arrangement for storing water, if
necessary, in drums or tanks or cisterns as approved by the
Engineer. Care shall be exercised to see that water is not
contaminated.
10.0 WORKMANSHIP :
10.1 All works shall be true to level, plumb and square and the corners,
edges and arising in all cases shall be unbroken and neat.
10.2 Any work not to the satisfaction of the Engineer-in-charge or his
representative will be rejected and the same shall be rectified or
remove and replaced with work of the required standard of
workmanship at no extra cost.
11.0 Providing dry trap/ granite/ quartzite/ gneiss rubble stone soiling
230 mm thick including hand packing and compacting complete.
11.1 GENERAL : The item provides for supply of dry trap rubble soling and labour for
laying of specified type of stones in the specified thickness including
preparing the subgrade to proper section by scraping, dressing,
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watering & compaction with vibratory roller etc. and hand packing the
rubble chips to the required line, curve, grade and section.
11.2 Diversion :
When the traffic can be allowed on the road side berms without much
inconvenience to traffic or impediment to the work, this shall be
provided by the contractor at his own cost. He shall provide the
necessary barricading, warning boards and signals and watchmen by
day and red lights at night and comply with relevant provisions of
specification No. BR.1 of Red Book. Otherwise, a separate diversion
shall be provided according specification No. BR. 1 of Red Book.
11.3 CONSTRUCTION :
11.3.1 Preparation of sub-grade :
The sub-grade shall be marked by stakes and strings for the required
width for laying of the soling in line, curve, section and grade with
reference to the centre line. The edge line stakes shall be ranged for a
sufficiently long length to obtain straight lengths and uniform curves.
The contractor shall clear off the area and do the necessary trimming or
filling for laying of the soling in line, curves, grades and section. All
fillings shall be watered and compacted to get maximum consolidation.
The camber, super elevation etc. of the sub-grade shall conform in
shape to those of the finished road surface and if in any section the
road surface is loose, undulating or uneven, the contractor shall at his
own cost make it up with suitable material, water and compact it and
obtain the correct section. Camber boards shall be used to get the
required section.
11.3.2 Laying Soling :
The rubble collected by the roadside shall be laid with the largest face
downwards and in contact with each other. the stone shall break joint as
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far as possible. The full thickness of the soling shall generally be made
with one stone only. The junction of the old road and the new
construction shall be diagonal in plan and the soling shall be in level
with the corresponding course of the road.
Unless otherwise provided in the plans or directed by the Engineer, the
width of the soling shall be 30 cm. more than that of the metal above.
11.3.3 Hand - packing :
As the laying of rubble advances the soling shall be hand packed by
wedging and packing with 80 mm metal coed for the purpose in the
joints of the soling and driving them by hammers in place so as to fill
the voids as completely as possible. This operation of hand packing
shall follow the rubble laying closely.
The soling shall be laid and hand packed true to grade and section and
these shall be often checked by boning rods, template boards and fish
line etc. The grades, section etc. of the soling shall correspond to those
of the surfacing coming on it.
The soling thus laid shall be finished by knocking out projecting stones
and filling depressions by chips to come up to the grade and camber.
11.4 ITEM TO INCLUDE :
1) Setting out including labour and materials like stakes, strings, fish
line, boning rods, and camber boards.
2) Diversion, barricading, signaling and controlling traffic if
necessary unless separately provided in the tender.
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3) Conveying the rubble from stacks on the roadside and laying the
soling to the required line, curve, grade and section including
clearing, sectioning, dressing grades and section and compacting
the section, breaking rubble and hand packing with 80 mm
metal, filling the voids with rubble chips, sand stone screening
etc.
4) All labour, materials and use of equipment and tools required for
carrying out the work satisfactorily.
11.5 MODE OF MEASUREMENT & PAYMENT :
The contract rate shall be for one cubic metre of soling laid, hand
packed and finished.
The width and depth shall be restricted to the specified width and depth.
The dimensions shall be recorded correct upto two places of decimals
of a metre and the quantity calculated correct upto two places of
decimals of a cubic metre. No deduction shall be made for voids.
12.0 PROVIDING 650 MM DIA STONE COLUMN :
The vertical bore of 650 mm dia shall be drilled through an approved
agency who are well equipped with machinery. Temporary fences,
guards, lights and protective work necessary for protection of workers,
supervisors, Engineer or any other persons permitted access to site.
All labour, material, plant, equipment such as winch, tripod stand,
pulley, rope arrangement, slush pump, chisel, C.I. casing, rammer
and other allied machinery.
The contractor shall be responsible for the accuracy of setting out of
works and fixing the levels required for the execution thereof.
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Carefully protect and preserve all bench marks and other marks used
in setting out of the work.
The contractor shall take every precaution to avoid damage to the
existing structure in the vicinity as a result of boring of stone column.
The contractor has to get approval before and after drilling of bore.
12.1 Stone Column :
12.1.1 Drilling of Vertical Bore :
The Vertical bore of 650mm dia shall be drilled through an approved
agency who are well equipped with machinery such as which, tripod
stand, pulley, rope arrangement, slush pump chisel, C.I. casing
rammer and other allied machinery of adequate capacity for drilling
the bore. The bore shall be perfectly vertical upto the hard strata.
Bentonite clay shall be applied as and when required to stabilize the
sides.
The contractor has to get approval before and after drilling of bore.
12.2 Construction of stone column :
The stone column shall be constructed from well graded stone of
50mm to 2mm size stabilized by 3% lime. All the materials used shall
be got approved from the competent authority before starting the
construction. The aggregate along with 3% lime shall be filled in layers
and compacted by ramming by mechanical rammer or any other
effective means. Any discrepancy during the construction of stone
column shall be brought to the notice of the Engineer from time to
time.
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12.3 Providing and fixing cages :
A steel cage of 8 numbers, 8mm dia for steel bars tied with 8mm for
steel rings is to be used inside the gabion to maintain item circular
shape while placing stone aggregates.
12.3.1 Rings should be spread @600 mm c/c for top portion of 3m. length of
stone column. For remaining length rings are to be speced at 1m. c/c.
12.4 GEOBOXES OVER STONE COLUMNS :
12.4.1 Providing and laying Ropenet/CE 121 :
The item provides for providing and laying ropenet or CE 121 on the
leveled surface.
Item to include :
1. Providing and laying Ropenet or CE 121
2. Providing and laying 50mm thick grit / CNS murum
3. Rolling and compacting with vibratory roller
4. Cost of all materials, labour, taxes, freight, transportation etc.
The work to be carried out as per Manufacturer’s instructions.
Mode of Measurement :
The contract rate shall be for one sq.metre of ropenet/CE 121
provided and laid.
12.4.2 Providing Geoboxes over Ropenet/CE 121 :
Scope of work and item to include :
The item provides for providing and laying, fixing in position Geobox
over Ropenet/CE 121 on leveled surface of 600 x 600 x 230 mm. Size
made up of Geobox net/CE 153 and border rope, fixing in geoboxes
aggregate 60-80mm, 40-60mm and 25-40mm in proportion 4:2:1
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and rolling and compacting the entire boxes with vibratory roller
including cost of all materials, labours, taxes, freight, transportation,
leads and all lifts etc. complete.
The work to be carried out as per manufacturer’s instructions.
Mode of Measurement :
The contract rate shall be for one sq.metre of Geobox fixed.
12.4.2.1 Scope of work and item to include :
The item provides for providing and laying, fixing in position Geobox
over Ropenet/CE 121 on leveled surface of 600 x 600 x 230mm size
made up of Geobox net/CE 153 and border rope. Fixing the geobox
with polymer/bamboo bodkins of required heights, providing and
filling in geoboxes aggregate 60-80mm and 25-40mm in proportion
4:2:1 and rolling and compacting the entire boxes with vibratory roller
including cost of materials, labours, taxes, freight, transportation, leads
and all lifts etc. complete.
The work to be carried out as per Manufacturer’s instructions.
12.4.2.2 Mode of measurement :
For Geobox net the contract rate shall be for on sq.meter of Geobox
net fixed. For Polymer bodkins the contract rate shall be per number of
polymer bodkins provided and fixed. For well graded machine crushed
aggregates, the contract rate shall be per cum. of Geoboxes filled
including compaction. The compaction shall be paid at per sqm. of
compacted surface.
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13.0 Geo boxes of Netlon – CE 121, CE 153, Polymer/Bamboo bodkins
with rope and well graded machine crushed aggregates
13.1 The item provides for providing, laying and fixing CE 121 on leveled
surface, CE 153 for making geo boxes by using polymer/bamboo
bodkins with rope of size 600 x 600 x 230mm or of required size.
Providing and filling in geo boxes well graded machine crushed
aggregates of size ranging from 2 mm to 75 mm in the proportion of
60-75mm, 40-60mm and 2-40mm with 4:2:1 ratio and compacting
the entire boxes with mechanical means.
The work to be carried out as per drawing and as directed by
Engineer.
13.2 Mode of Measurement :
For Netlon CE 121 & CE 151 the contract rate shall be for one
sq.metre of Netlon fixed. For Polymer/bamboo bodkins the contract
rate shall be per number of bodkins provided and fixed. For well
graded machine crushed aggregates, the contract rate shall be per
cu.metre of Geoboxes filled. The compaction shall be paid at per
sq.metre of compacted surface.
14.0 Providing & fixing polymer/bamboo bodkins with rope as per drawing
for fixing and jointing of Netlon CE 153 and as directed by Engineer
etc. complete.
14.1 The work shall be carried out as per description given in Schedule “A”
(Bill of Quantities) and/or as directed by Engineer.
15.0 Providing & fixing well graded machine crust aggregate size ranging
from 75mm to 2mm filling voids with 12mm aggregates etc.
complete.
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15.1 The work shall be carried out as per description given in Schedule “A”
(Bill of Quantities) and/or as directed by Engineer.
16.0 Compacting the top surface well graded filled in boxes by mechanical
means etc. complete.
16.1 The work shall be carried out as per description given in Schedule “A”
(Bill of Quantities) and/or as directed by Engineer.
17.0 SPECIFICATIONS FOR READY MIX CONCRETE
17.1 Batching of Concrete ingredients:
For all concreting, only Ready Mixed Concrete (RMC) manufactured
at site is mandatory, weigh batching plant or obtained from
approved R.M.C. supplying agencies or produced at site using
mechanical mixers and weigh batchers as per item description, will
be used. The R.M.C. supplying agency will supply mix design details
in advance before start of delivery.
17.2 Transporting, placing, compacting, finishing and curing:
Transporting, placing, compacting, finishing and curing of concrete
shall be in accordance with IRC Specifications.
17.2.1 Transporting:
For all RMC concreting, the concrete after discharge from batching
plant will be loaded in transit mixers and kept continuously agitated
while mix is in transit. At destination the mix will be unloaded in to
the hoppers of concrete pump. For site made concrete suitable
prescribed methods shall be adopted.
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17.2.2 Placing:
The concrete produced in RMC plant/batching plant, when
discharged from transit mixer in pump hopper shall be kept
continuously agitated and pumped to destination placing point. Site
made concrete shall be placed by approved method of placing. The
height of any single lift of concrete shall not exceed 1.5 m for walls
and 2.0 m for columns. For columns where the height of pour is
more than 2.0 m, suitable arrangement in formwork should be
made so that the vertical drop of concrete is restricted to less than
2.0 m. Any such arrangement should be approved from the
engineer in advance before execution.
High velocity discharge of concrete causing segregation of mix shall
be avoided. The concrete shall be placed in the forms gently and
not dropped from the height exceeding 1.5m except in columns
where the maximum allowed will be 2.0 m. Each batch of concrete
will be placed in layer. Each layer of concrete shall be compacted
fully before the succeeding layer is placed and separate batches
shall be placed and fully compacted before the layer immediately
below has taken initial set. The layers should be sufficiently shallow,
to permit stitching of two layers together by vibration.
Concreting of any portion or section of the work shall be carried out
in one continuous operation and no interruption of concreting work
will be allowed without approval of the Engineer.
Plain concrete in foundations shall be placed, in direct contact, with
the bottom of excavation, the concrete being deposited in such a
manner, as not to get mixed with the earth. The concrete placed
below the ground level shall be protected from falling earth during
and after placing. Concrete placed in ground containing deleterious
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substances, shall be kept free from contact, with such ground and
with water draining there from during placing and for a period of 7
days or otherwise instructed there after. Approved means shall be
taken to protect immature concrete from damage by debris,
excessive loading, abrasion, vibrations, deleterious ground water,
mixing with earth and other materials and other influences, that may
impair strength and durability of concrete.
Before starting of work contractor will get the concrete pouring
programme and its sequence approved by Engineer to avoid cold
joints.
17.2.3 Compaction:
External, Internal (needle) and surface (screed board) vibrators of
approved make shall be used for compaction of concrete.
a) External/internal vibrators shall be used for compaction of concrete
in foundations, columns etc. For sections such as slabs, the concrete
shall be compacted by external, internal and surface type vibrators,
depending on the thickness of layer to be compacted. 25 mm,
40mm and 60mm dia internal vibrators may be used. The concrete
shall be compacted by use of appropriate diameter vibrator by
holding the vibrator in position until:
i) Air bubbles cease to come to surface
ii) Resumption of steady frequency of vibrator after short period
of dropping the frequency, when the vibrator is first inserted.
iii) The tone of the vibrator becomes uniform
iv) Flattened, glistening surface, with coarse aggregated particles
blended into it, appears on the surface.
After the compaction is completed, the vibrator should be
withdrawn slowly from concrete so that concrete can flow in to
the space previously occupied by the vibrator. To avoid
segregation during vibration, the vibrator shall not be dragged
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through the concrete nor used to spread the concrete. The
vibrator shall be made to penetrate into layer of fresh concrete
below if any, for a depth about 150mm. The vibrator shall be
made to operate at regular pattern of spacing. The effective
radii of action will overlap, approximately half a radius to
ensure complete compaction.
v) To secure even and dense surfaces free from aggregate
pockets, vibration shall be supplemented by tamping or
rodding by hand in the corners of forms and along the form
surfaces while the concrete is plastic.
vi) A sufficient number of spare vibrators shall be kept readily
accessible to the place of deposition of concrete to assure
adequate vibration in case of breakdown of those in use.
25mm diameter immersion vibrators shall be used in thin
sections upto 125mm, 40mm diameter immersion vibrators in
fairly wide sections like beams, slabs, columns etc. and 60mm
diameter vibrators in foundation, pilecaps or such large
section members. Screed vibratos shall also be used for slab
concreting.
vii) Plain concrete also shall be vibrated whenever and wherever
directed by Engineer to achiever full compaction, using needle
and screed vibrators as necessary.
17.2.4 Curing:
Curing shall be started at the earliest by spreading wet jute cloth
(hessian) and cover top with impervious sheet and subsequently
cured with spraying water. In inaccessible area to start with, curing
be started by spraying curing compound before starting membrane
curing.
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17.3 Placing temperatures :
During extreme hot weather, the concreting shall be done as per
procedures set out in IRC specifications.
Fine and coarse aggregates concreting shall be kept shaded and the
concrete aggregates sprinkled with water for a sufficient time before
concreting, in order to ensure that the temperature of these
ingredients is as low as possible prior to batching. The mixer and
batching equipment shall be also shaded and if necessary painted
white in order to keep their temperatures as low as possible. The
placing temperature of concrete shall be as low as possible in warm
weather and care shall be taken to protect freshly placed concrete
form over heading by sunlight in the first few hours of its laying. The
time of day selected for concreting shall also be chosen so as to
minimize placing temperatures. In case of concreting in exceptionally
hot weather the Engineer may in his discretion specify the use of ice
either flaked and used directly in the mix, or blocks, used for chilling
the mixing water. In either case no extra payment shall be made to
the contractor on this account.
17.4 Construction joints :
Construction joints in all concrete work shall be made as directed by
the Engineer. Where vertical joints are required, these shall be
shuttered as directed and not allowed to take the natural slope of the
concrete.
Before fresh concrete is placed against a vertical joint, the old
concreter shall be chipped/sand blasted, cleaned and moistened 25
hours before placing the concrete. All standing water should be
removed and dried with compressed air. Neat cement slurry shall
be applied on the chipped/sand blasted surface and mortar of the
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same water cement ratio as the concrete and 10mm thick applied.
Where required suitable expansion joints shall also be provided as
directed by the Engineer.
The time of day selected for concreting shall also be chosen so as to
minimize placing temperatures. In case of concreting in exceptionally
hot weather the Engineer may in his discretion specify the use of ice
either flaked and used directly in the mix or blocks used for chilling
the mixing water. In either case the cost of ice either flaked and used
directly in the mix or blocks used for chilling the mixing water. In
either case the cost of ice and additional labor involved in weighing
and mixing etc. shall be borne by the contractor and noting will be
paid on this account.
17.5 Defective Concrete :
Should any concrete be found honeycombed or in any way defective,
such concrete shall on the instruction of the Engineer be cut out by
the Contractor and made good at his own expenses.
17.6 Exposed Faces, Holes and Fixtures :
On no account shall concrete surfaces be patched or covered up or
damaged concrete rectified or replaced until the Engineer or his
representative has inspected the works and issued written instructions
for rectification. Failure to observe this procedure will render that
portion of the works liable to rejection; in which case it will be
treated as a work which has failed to meet specified strength
requirements.
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Holes for foundation or other bolts or for any other purposes shall
be moulded, and steel angles, holdfasts or other fixtures shall be
embedded, according to the drawings or as instructed by the
Engineer.
17.7 Cracks:
17.7.1 If cracks develop in concrete construction which in the opinion of the
Engineer may be detrimental to the strength of the construction, the
contractor at his own expense shall test the slab or other construction
as specified in Special Conditions. If under such test loads the cracks
develop further, the Contractor shall dismantle the construction,
carry away the debris, replace the construction and carry out all
consequential work thereto, without nay extra payment.
17.7.2 If any cracks develop in the concrete construction, which in the
opinion of the Engineer, are not detrimental to the strength of the
construction, the contractor at his own expense shall grout the cracks
with polymer cement grout of approved quality at his own expense
and risk and shall make good to the satisfaction of the Engineer the
surface finish which in the opinion of the Engineer has suffered
damage either in appearance or stability owing to such cracks. The
Engineer’s decision as to the extent of the liability of the Contractor
in the above matter shall be final and binding.
17.8 Finishes:
Unless otherwise instructed the face of exposed concrete placed
against formwork shall be rubbed down immediately on removal of
the formwork to remove irregularities. The face of concrete for which
formwork is not provide other that slabs shall be smoothed with a
float to give a finish equal to that of the rubbed down face, where
formwork is provided. The top face of a slab which is not intended
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to be covered with other materials shall be leveled and floated to a
smooth finish at the levels or falls shown on the drawings or as
directed. The floating shall be done so as not to bring as excess of
mortar to the surface of the concrete. The top face of a slab
intended to be surfaced with other materials shall be left with a
spaded finish. Face of concrete intended to be plastered shall be
roughened by approved means to form a key.
When at site, concrete cube testing machine is used 10% of the
cubes should be tested at independent recognized laboratories
approved by Engineer at their cost.
17.9 Scope of work & item to include:
1. The item refer to ready mix concreter required for
R.C.C./P.C.C. works as mentioned in item description under
Schedule –‘A’ procured form reputed manufacturer approved
by Engineer. The material shall be conforming to IRC
specifications.
The material requirement shall be completed according to
Standard Specifications No.B.7.1 refer Page No. 38 for
controlled cement concrete.
2. The item include manufacturer with ingredients, control
temperature, transportation, pumping, placing, vibration and
curing of Ready Mix Concrete and all taxed, excise duty, sales
tax, octroi, insurance etc. levied by Govt./Semi-Govt./local
authority and cost of ready mix concrete and any penalty,
additional charges for controlling temperature upto casting or
any other charges levied by the manufacturer.
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3. Proportioning of the mix/mix design shall be decided by the
contractor/RMC manufacturer to achiever strength specified in
item and shall be get approved by Engineer. The
proportioning of ingredients, use of ingredients and mix
designs parameters for various slumps shall be got approved
by Engineer prior to mix design.
4. Scaffolding shall conform to specifications No. B.6.5(a) and
got approved by the Engineer.
5. Forms shall conform to specifications No. B.6.5(b).
6. The concrete shall be pumped to the final positions as quickly
as possible by methods which will prevent segregation and
loss of ingredients.
7. The concrete shall be placed into its final position, compacted
and finished within 30 minutes of mixing the water and before
initial setting commences. The method of placing shall be
such as to avoid segregation. Placing shall be done in
balanced manner to avoid eccentric loads on the form work.
As far as possible the concreting shall be done continuously
and construction joints avoided.
If the area to be concreted is under water, the water shall be
removed by bailing out or using pumps and other devices.
8. Compaction shall be done by mechanical vibrators and also
by rods so that a dense concrete is obtained.
9. The concrete shall be adequately cured.
10 Immediately after the removal of forms, any undulations,
depressions, cavities, honey combing broken edges of corners
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height spot defects shall be made good and finished with
cement mortar 1:2. But necessity of such finishing must be
exceptional and the total not exceed 1% on average.
11. Concrete which is partially hardened shall not be tempered or
re-mixed but shall be disposed off as desirable.
12 Sampling and testing shall be done as per IRC Specifications.
13. All labour, materials use of equipment, tools and plant,
installing and removal of scaffolding, flase work and forms
and branching necessary for the satisfactory completion of
item,
14. Compensation for injury to persons and damage to work or
property.
15. Establishment of site laboratory.
17.10 Sampling and Strength of designed concrete mix:
General:
Samples from fresh concrete shall be taken as per IS:1199 and cubes
shall be made, cured and tested at 28 days in accordance with IRC
Specifications.
In order to get a relatively quicker idea of the quality of Concrete,
optional tests on beams for modules of rupture at 72 + 2 hours or at 7
days, or compressive strength tests at 7 days may be carried out in
addition to 28 days compressive strength tests. For this purpose the
values should be arrived at based on actual testing. In all cases, the 28
days compressive strength specified in Table-2 shall alone be the
criteria for acceptance or rejection of the concrete.
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17.11 Frequency of Sampling:
17.11.1 Sampling Procedure:
A random sampling procedure shall be adopted to ensure that each
concrete batch shall have a reasonable chance of being tested that is,
the sampling should be spread over the entire period of concreting and
cover all mixing units.
17.11.2 Frequency:
The minimum frequency of sampling concrete of each grade shall be in
accordance with the following:
Quality of concrete in the work (M3)
Samples Number of
1-5 1
6-15 2
16-30 3
31-50 4
51 and above 4 plus one additional sample for each additional 50m3 or part thereof
Note: At least one sample shall be taken from each shift. Where
concrete is produced at continuous production unit, such as ready-
mixed concrete plant, frequency of sampling may be agreed upon
mutually by suppliers and purchasers.
17.11.3 Test Specimen: Three test specimens shall be made from each sample for testing at 28
days. Additional samples may be required for various purposes such as
to determine the strength of concrete at 7 days or at the time of striking
the formwork, or to determine the duration of curing, or to check the
testing error. Additional samples may also be required for testing
samples cured by accelerated methods as described in IRC
Specifications.
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17.11.4 Test results of sample: As per IRC Specifications.
Number of Test Result :
The total number of test results required to constitute an acceptance
record for calculation of standard deviation shall not be less than 30.
Attempts should be made to obtain the 30 test results, as early as
possible, when a mix is used for first time.
Standard deviation to be brought up to date. The calculation of the
standard deviation shall be brought up to date after every change of
mix design and at least once a month.
17.11.5 Determination of Standard Deviation:
Concrete of each grade shall be analyzed separately to determine its
standard deviation.
The standard deviation of concrete of a given grade shall be calculated
using the following formula from the results of individual tests of
concrete of that grade obtained as specified in Table.
Estimated standard deviation = S = Where:
Δ = Deviation of the individual test strength from the average
strength 'n' samples and
n = Number of samples test results.
When significant changes are made in the production of concrete
batches (for example changes in the material used, mix design,
equipment or technical control), the standard deviation value shall be
separately calculated for Such batches of concrete.
17.11.6 Assumed Standard Deviation:
Where sufficient test results for a particular grade of concrete are not
available, the value of standard deviation given in IRC Specifications
may be assumed.
ΣΔ2
n - 1
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17.12 Acceptance Criteria :
17.12.1 The concrete shall be accepted if it passes all strength requirements and acceptance criteria as stipulated in IRC Specifications.
11.12.2 If the concrete is deemed not to comply pursuant to the structural
adequacy of the parts affected shall be investigated and any
consequential action as needed shall be taken.
17.12.3 Concrete of each grade shall be assessed separately.
17.12.4 Concrete shall be assessed daily for compliance.
17.12.5 Concrete is liable to be rejected if it is porous or honey combed, its
placing has been interrupted without providing a proper construction
joint, the reinforcement has been displaced beyond the tolerances
specified, or construction tolerances have not been met. However, the
hardened concrete may be accepted after carrying out suitable
remedial measurement to the satisfaction of the Engineer.
17.13 FAILURE TO MEET SPECIFIED REQUIREMENTS :
17.13.1 If from the cube test results is appears that some portion of the works has
not attained the required strength, the Engineer may order that portion of
the structure be subjected to further testing of any kind whatsoever as
desired by the Engineer, including, if so desired by him. Full load testing
of the suspected as well as adjacent portions of the structure as specified
in the Conditions of Contract. Such testing shall be at the Contractor’s
cost.
17.13.2 If the strength of concrete in any portion of the structure is lower than the
required strength, but is considered nevertheless adequate by the
Engineer so that demolition is not necessary, the Contractor shall be paid
a lower rate for such lower strength concrete as determined by the
Engineer.
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17.14 TESTING OF CONCRETE :
The contractor shall erect at site a suitable laboratory at his cost for
routine testing of materials, testing of materials, testing of concrete
cubes etc. the samples of materials used in the work, tested materials
as well as record of tests shall be kept on site for display. The cost of
carrying out the tests in his laboratory as well as outside laboratories as
approved by the Engineer shall be borne by the Contractor.
11.14.1 As frequently as the Engineer may require, testing shall be carried out
in the field for;
i) Moisture content of sand.
ii) Moisture content of aggregates.
iii) Silt content of sand.
iv) Grading of sand.
v) Slump test of concrete.
vi) Grading of aggregates.
vii) Concrete cube test.
17.14.2 The contractor shall provide and maintain at all times, until the works
are completed, equipment and staff required for carrying out these
tests. The contractor shall grant the Engineer or his representative full
access to his laboratory at all times and shall produce on demand
complete records of all tests carried out on site.
17.14.3 Before concreting commences on any section of the works the
contractor shall obtain approval of the Engineer or his representative as
regards the form and reinforcement conforming with the drawings. He
shall also indicate to the Engineer in writing and obtain his approval for
positions of construction joints. The Engineer or his representative’s
approval shall not relieve the contractor of any of his obligations to
comply with the provisions of this specifications or contract.
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17.15 ADMIXTURES :
Approved admixtures and air entraining agents may be permitted by
the Engineer at his discretion provided that the strength requirements
and durability are not affected by their use.
17.16 SLUMP TEST :
Only sufficient amount of water shall be added to the cement and
aggregates during mixing to produce concrete having sufficient
workability to enable it to be well consolidated to fill up the corners of
shuttering and to work around the reinforcement and to give specified
surface finish and to have the specified strength.
The slump of concrete shall be determined from time to time by
carrying out slump tests.
In case the slump of concrete shall be as per the requirements of mix
design, it shall be maintained through out the concrete for a particular
member.
Slump test apparatus and labour etc. shall be provided by the
contractor free of cost.
17.17 Measurement :
Concrete and reinforcement shall be paid separately unless
otherwise specified.
The Contract rate shall be for a unit of one cubic meter of concrete.
The concrete shall be measured for its length, breadth and depth
limiting dimensions to those specified on the drawings or as ordered
by the Engineer.
The Volume of concrete measured shall include that occupied by
1) Reinforcement and other metal sections.
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2) Cast in components each less than 0.01 M3 in volume.
3) Rivetts, fillets or internal splays each less than 0.005 M2 in
cross sectional area.
4) Pockets and holes not exceeding 0.01 M3 in volume.
5) Rates for precast concrete shall include demoulding, handling,
storing, transporting and erecting at site, including all
clamping, bolting, bracing that may be required during
erection, including erection equipment.
17.18 In order to exercise the required degree of constant control over the
concrete materials and their proportions, the contractor shall set up
and maintain at his own expense a testing laboratory at site. He shall
provide all apparatus required for sensitive testing of concrete and
concrete materials. In particular he must have the following
equipment set up in the site laboratory.
i) A set of Standard Sieves
ii) Sieve shaker
iii) Measuring Cylinders
iv) Slump Cones
v) Adequate number of Standard Moulds
vi) Weighing Balance
vii) Curing tank for cubes
viii) Concrete cube testing machine
Any other apparatus deemed necessary by the Engineer for proper
control shall be provided by the Contractor at his own expense. The
laboratory shall be staffed by qualified technicians.
When at site, concrete cube testing machine is used 10% of the
cubes should be tested at independent recognized laboratories
approved by Engineer at contractor’s cost.
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17.19 Ready-Mixed Concrete and Pumping Concrete
17.19.1 Ready-mixed concrete may be manufactured in a central automatic
weight Batching plant and transported to the job in agitating transit
mixer.
The maximum size of coarse aggregate shall be limited to one-third
of the smallest inside diameter of the hose or pipes used for
pumping. Provision shall be made for elimination of over-sized
particles by screening or by careful selection of aggregated. To
obtain proper gradation it may be necessary to combine and blend
certain fractional sizes to aggregates. Uniformity of gradation
throughout the entire job shall be maintained.
The quantity of coarse aggregate shall be such that the concrete can
be pumped, compacted and finished without difficulty.
17.19.2 Fine aggregates:
The gradation of fine aggregate shall be such that 15 to 30 percent
should pass the 0.30 mm screen and 5 to 10 percent should pass
0.15mm screen so as to obtain a pumpable concrete. Sands that
are deficient in either of these two sizes should be blended with
selected finer sands to produce these desired percentages. With this
gradation, sand having a fineness modulus between 2.4 and 2.8 are
generally satisfactory. However, for uniformity, the fineness modulus
of the sand should not vary more that 0.2 from the average value
used in proportioning.
17.19.3 Water, Admixtures and slump:
The amount of water required for proper concrete consistency shall
take into account the rate of mixing, length of haul, time of
unloading and ambient temperature conditions.
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Additions of water to compensate for slump loss should not be
resorted to nor should the design maximum water-cement ratio be
exceeded. Additional dose of retarder/plasticizer/superplasticizer
shall be used with prior approval of Engineer to compensate the loss
setting time and slump at contractor’s cost. Retempering water shall
not be allowed to be added to mixed batches to obtain desired
slump.
17.19.4 Transportation:
The method of transportation used should efficiently deliver the
concrete to the point of placement without significantly altering its
desired properties with regard to water-cement ratio, slump, and
homogeneity.
The revolving-drum truck bodies of approval make shall be used for
transporting the concrete. The number of revolutions at mixing
speed, during transportation, and prior to discharge shall be
specified and agreed upon. Reliable counters shall be used on
revolving-drum truck units. Standard mixer uniformity tests,
conforming to ASTM standards C 94-69 “Standard Specifications for
Ready Mix Concrete”, shall be carried out if desired by Engineer to
determine whether mixing is being accomplished satisfactorily.
17.19.5 Pumping of Concrete:
Only approved pumping equipment, in good working condition,
shall be used for pumping of concrete. Concrete shall be pumped
through a combination of rigid pipe and heavy-duty flexible hose of
approved size and make. The couplings used to connect both rigid
and flexible pipe section shall be adequate in strength to withstand
handling loads during erection of pipe system, misalignment, and
poor support along the lines. They should be nominally rated for at
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least 3.5 Mpa pressure and greater for rising runs over 30m.
Couplings should be designed to allow replacement of any section
without moving other pipe sections, and should provide full cross
section with no construction of crevices to disrupt and smooth flow of
concrete.
All necessary accessories such as curved sections of rigid pipe, swivel
joins and rotary distributors, pin and gate valves to prevent backflow
in the pipe line, switch valves to direct the flow into another pipe line,
connection device to fill forms from the bottom up, extra strong
couplings for vertical runs, transitions for connecting different size of
pipe, air vent for downhill pumping, clean-out equipment etc. shall
be provided as and where required. Suitable power controlled
booms or specialized crane shall be used for supporting the pipe
line.
17.19.6 Field control:
Sampling at both truck discharge and point of final placement shall
be employed to determine if any changes in the slump and other
significant mix characteristics occur. However, for determining
strength of concreter, cubes shall be taken from the placement end
of line. The RMC supplier should nominate a technically qualified
representative at site for sampling, testing and placing of concrete.
17.19.7 Planning:
Proper planning of concreter supply, pump locations, line layout
placing sequence and the entire pumping operation shall be made.
The concreter production, transportation and placing shall be
planned in such a manner that duration between addition of water
during mixing and placing of concrete in desired location is well
within time limits prescribed by the RMC manufacturer, however, this
is subjected to fulfillment of slump and other properties of concrete
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as specified in tender. On failure to adherer to the time schedule by
the Supplier the Engineer may reject the concrete.
The pump wherever used should be as near the placing area as
practicable, and the entire surrounding area shall have adequate
bearing strength to support concrete delivery pipes. Lines from
pump to the placing area should be laid out with a minimum of
bends. For large spacing areas alternate lines should be installed
for rapid connection when required. Standby power and pumping
equipment should be provided to replace initial equipment, should
breakdown occur.
The placing rate should be estimated so that concrete can be
ordered at an appropriate delivery rate.
As a final check, the pump should be started and operated without
concrete to be certain that all moving parts are operating properly.
A grout mortar should be pumped in to the lines to provide
lubrication for the concrete, but this mortar shall not be used in the
placement.
When the form is nearly full and there is enough concrete in the line
to complete the placement, the pump shall be stopped and a go-
devil inserted and shall be forced through the line by water under
pressure to clean it out. The go-devil should be stopped at a safe
distance from the end of the line so that the water in the line will not
spill into the placement area. At the end of placing operation, the
line shall be cleaned in the reverse direction.
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17.20 SUBMISSION OF DOCUMENTS FROM RMC MANUFACTURER
Following document shall be submitted by the RMC manufacturer to
CIDCO through the contractor along with checklist for RMC specified
in the tender document.
1. Design Mix
2. Manufacturer’s Test Certificate for cement and plasticizer
3. Lab test certificates for all ingredient of concrete.
4. Delivery docket sheet mentioning the grade of concrete,
quality of ingredient used, slump, transit mixer vehicle no.
placement, location, time of concrete produce and placing etc.
18.0 FORMWORK
4990 - Specification for plywood for concrete shuttering work.
3696 - Safety code of scaffolds and ladders
4014 - Steel and tubular scaffoldings.
8989 - Safety code for erection of concrete framed structures.
456 - Code of practice for plain and reinforced concrete.
18.1 Definition:
The term “Formwork” or “Shuttering” shall include all forms, moulds,
sheeting, shuttering planks, walers, poles, posts, shores, struts and
strutting, ties, uprights, wallings, steel rods, bolts, wedges and all
other temporary supports to the concrete during the process of
setting.
18.2 Materials :
18.2.1 All facing formwork to come in contact with concrete in different
elements of the structures shall be of such material and size as
specified on drawings or as instructed by the Engineer.
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18.2.2 Timber facing formwork to come in contact with concrete for
“Exposed Concrete Surfaces” shall consist of lab-jointed or tongue
and grooved planks as directed by the Engineer and no joints shall
permit leakage of mortar at all from cast-in-situ concrete.
18.2.3 The materials for other backing and supporting formwork and their
sizes shall be selected by the contractor and shall be subject to the
approval of the Engineer.
18.3 Design:
The formwork shall be designed and constructed so that the concrete
can be properly placed and thoroughly compacted to obtain the
required shape, position and level subject to specified tolerances. It
is the responsibility of the contractor to obtain the results required by
the Engineer, whether or not some of the work is sub-contracted.
Approval of the proposed formwork by the Engineer will not diminish
the Contractors responsibility for the satisfactory performance of the
formwork, nor for the safety and co-ordination of all operations.
18.4 Formwork for Exposed Concrete Surfaces:
The facing formwork, unless indicated otherwise on drawings, or
specifically approved by the Engineer in writing, shall generally be
made with materials not less than the thickness mentioned below for
different elements of the structure.
18.4.1 Plain slab soffits, and sides of beams, girders, joists and ribs and
side of walls, fins, parapets, pardis, sub-breakers etc. shall be made
with :
a) Steel plates not less than 3mm thick of specified sizes stiffened
with a suitable structural frame work, fabricated true to plane
with a tolerance of +/- 2mm within the plate.
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b) Plywood plates not less than 12mm thick (IS: 4990 -
Specification for plywood for Concrete Shuttering Work) or
3mm thick with a 20mm timber plank backing, of specified
sizes stiffened with a suitable timber framework.
18.4.2 Bottom of beams, girders and ribs, sides of columns shall be made
with:
a) Steel plates not less than 5mm thick of specified size stiffened
with a suitable structural frame, fabricated true to plane with a
tolerance of +/-2mm within the plate.
b) Timber planks of 35mm actual thickness and of specified
surface finish, width and reasonable length.
c) Plywood plates not less than 12mm thick, of specified sizes
stiffened with a suitable timber framework.
18.5 Erection of Formwork:
The following shall apply to all formwork:
18.5.1 To avoid delay and possible erection of the formwork, the Contractor
shall obtain sufficiently in advance, the approval of the Engineer for
the design of forms and the type of materials used before fabricating
the forms. (Ref ACI 347) Formwork for concrete of equivalent I.S.
Code)
18.5.2 All shutter planks and plates shall be adequately backed to the
satisfaction of the Engineer by a sufficient number and size of walers
or framework to ensure rigidity during concreting. All shutters shall
be adequately strutted, braced and propped to the satisfaction of the
Engineer to prevent deflection under deadweight of concrete and
superimposed live load of workmen, materials and plant, and to
withstand vibration. No joints in proper shall be allowed.
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18.6 Vertical props shall be supported on wedges or other measures shall
be taken where the props can be gently lowered vertically during
removal of the formwork. Props for an upper story shall be placed
directly over those in the storey immediately below, and the lower
props shall bear on a sufficiently strong area.
1) Care shall be taken that all formwork is set plumb and true to
line and level or camber or batter where required and as
specified by the Engineer.
2) Provisions shall be made for adjustment of supporting struts
where necessary. When reinforcement passes through the
formwork care should be taken to ensure close fitting joints
against the steel bars so as to avoid loss of fines during the
compaction of concrete.
3) If the formwork is held together by bolts or wires, these shall
be so fixed that no iron will be exposed on surface against
which concrete is to be laid. In any case wires shall not be
used with exposed concrete formwork. The Engineer may at
his discretion allow the Contractor to use tie-bolts running
through the concrete and the Contractor shall decide the
location and size of such tie-bolts in consultation with the
Engineer. Holes left in the concrete by these tie-bolts shall be
filled as specified by the Engineer at no extra cost.
4) Formwork shall be so arranged as to permit removal of forms
without jarring the Concrete. Wedges, clamps and bolts shall
be used wherever practicable instead of nails.
The formwork for beams and slabs shall be so erected so that
forms on the sides of the beams and the soffit of slabs can be
removed without disturbing the beam bottoms or props under
beams.
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5) Surface of forms in contact with concrete shall be oiled with a
mould oil of approved quality or clean diesel oil. If required
by the Engineer the contractor shall execute different parts of
the work with different mould oils to enable the Engineer to
select the most suitable. The use of oil which results in
blemishes of the surface of the concrete shall not be allowed.
Oil shall be applied before reinforcement has been placed
and care shall be taken that no oil comes in contact with the
reinforcement while it is being placed in position.
The formwork shall be kept thoroughly wet during concreting
and for all the whole time that it is left in place.
6) Immediately before concreting is commenced, the formwork
shall be carefully examined to ensure that following:
a) Removal of all dirt, shavings, sawdust and other refuse
by brushing and washing.
b) The tightness of joints between panels of sheathing and
between these and any hardened core.
c) The correct location of tie bars, bracing and spacers,
and especially connection or bracing.
d) That all wedges are secured and firm in position.
e) That provision is made for traffic on formwork not to
bear directly on reinforcing steel.
7) Formwork shall be continuously watched during the process of
concreting. If during concerting any weakness develops and
formwork shows any distress the work shall be stopped and
remedial action shall be taken.
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18.7 Exposed Concrete Work:
Exposed concrete surfaces shall be smooth and even originally as
stripped without any finishing or rendering. Where directed by the
Engineer, the surface shall be rubbed with carborundum stone
immediately on striking the forms. The Contractor shall exercise
special care and supervision of formwork and concreting to ensure
that the cast members are made true to their sizes, shapes and
positions and to produce the surface patterns desired. No
honeycombing shall be allowed. Honeycombed parts of the concrete
shall be removed by the Contractor as directed by the Engineer and
fresh concrete placed without extra cost, as instructed by the
Engineer. All materials, sizes and layout of formwork including the
locations for their joints shall have prior approval of the Engineer or
the Architect.
18.8 Camber:
Forms and false work shall be generally cambered as indicated in
the drawings or as instructed by the Engineer. However, for beams
up to 5m span and slabs upto 4m span camber is not normally
required to be provided.
18.9 Tolerances :
In accordance with IS: 456 2000 and MORT & H section 1500.
18.10 Age of Concrete at Removal of Formwork :
In accordance with ISL 456 2000 and MORT & H section 1500.
The Engineer may vary the periods specified in IS: 456-2000 if he
considers it necessary. Immediately after the forms are removed,
they shall be cleaned with a jet of water and a soft brush.
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18.11 Stripping of Formwork :
Formwork shall be removed carefully without jarring the concrete,
and curing of the concrete shall be commenced immediately.
Concrete surfaces to be exposed shall, where required by the
Engineer, be rubbed down with carborundum stone to obtain a
smooth and even finish. Where the concrete requires plastering or
other finish later the concrete surface shall be immediately hacked
lightly all over as directed by the Engineer. No extra charge will be
allowed to the Contractor for such work on concrete surfaces after
removal of forms.
18.12 Reuse of Forms :
The Contractor shall not be permitted reuse of timber facing
formwork brought new on the works more than 5 times for exposed
concrete formwork and 8 times for ordinary formwork. 5 or 8 uses
shall be permitted only if forms are properly cared for, stored and
repaired after each use. The Engineer may in his absolute discretion
order rejection of any forms he considers unfit for use for a
particular item, and order removal from the site of any forms he
considers unfit for use in the works. Used forms brought on the site
will be allowed proportionately fewer uses as decided by the
Engineer.
Use of different quality boards or the use of old and new boards in
the same formwork shall not be allowed.
18.13 Measurements:
1. Where formwork is paid separately, measurements shall be of
the area of finally exposed surface requiring shuttering
including curves, angles, splays, metres, bevels, etc. for which
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no special rate shall be allowed. The rates shall be inclusive of
all work connected with provision of formwork, its erection and
removal and treatment of the concrete surface immediately
after removal of the formwork.
2. No extra payment shall be made for holes to be made in
formwork for inserting electrical conduits, hooks for fans, for
plumbing work.
3. Where boxes or pockets are required to be formed in the
concrete, they will be paid for separately at the Contract Rates,
but in measuring the area of concrete surfaces shuttered, no
deduction will be made for openings upto 0.4m2. For voids
larger than 0.4m2 the surface of formwork forming the voids
shall be paid at rates of formwork set out in the Schedule and
the area of voids deducted from the face area of shuttering.
4. No deductions shall be made from formwork of main beams
where the secondary beams intersects it. Formwork to
secondary beams shall be measured upto sides of the main
beams. No deduction shall be made from the formwork to
stanchion or column casings at intersections of beam.
5. No payment shall be made for temporary formwork used in
concreting, nor for formwork required for joints or bulkheads,
in floors, elsewhere, whether such joints are to be covered
later with concrete or mastic or other material.
19.0 REINFORCEMENT:
List of Bureau of Indian Standard Code of Practice (ISI)
432 - Mild steel and medium tensile steel bars and hard
drawn steel wire for concrete.
1786 - Specifications for HYSD bars and wires for concrete
reinforcement
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250 - Code of practice for bending and fixing of bars for
concrete reinforcement
2751 - Recommended practice for welding of mild steel
reinforcement.
19.1 Steel:
Mild Steel, rounds conforming to IS: 432, HYSD bars conforming to
IS: 1139 of Fe 415, hard drawn steel wire fabric shall conform to IS
1566-1877, or rolled steel made from structural steel conforming to
IS:226. Any other steel specified for reinforcement shall conform in
every respect to the latest IRC Specifications and shall be of tested
quality under the ISI Certifications Scheme. All reinforcing work for
concrete work shall be executed in conformity with the drawings
supplied and instructions given by the Engineer and shall generally
be carried out in accordance with the relevant Indian Standard
Specifications (IS: 2502) & IRC Specifications.
19.2 Inspection of Testing:
Every bar shall be inspected before assembling on the work and any
defective, brittle, excessively rusted for burnt bars shall be removed.
Cracked ends of bars shall be cut out. Specimens sufficient for three
Tensile Tests per 10 tonnes of bars and for each different size shall
be sampled and tested by the Contractor. Batches shall be rejected if
the average results of each batch are not in accordance with the
specifications.
19.3 Lapping:
i) As far as possible bars of the maximum length available shall
be used. Laps shown on drawings or otherwise specified by
the Engineer will be based on the use by the contractor of bars
of maximum length. In case the contractor wished to use
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shorter bars, laps shall be provided at the contractors cost in
the manner and at the location approved by Engineer.
ii) As and when necessary welded laps shall be provided as
specified by the Engineer.
19.4 Spacing, supporting and Cleaning:
i) All reinforcement shall be placed and maintained in the
position shown on the drawing.
ii) The contractor shall provided approved type supports as
specified on the drawings for maintenance the top bars of the
slab in position.
iii) The 20 SWG annealed mild steel wire shall be used as
binding wire. All bars crossing one another shall be bound
with this wire twisted tight to make the skeleton or network
rigid so that the reinforcement is not displaced during placing
of concrete.
iv) On no account shall be bars be oiled or painted nor shall
mould oil used on the form work be allowed to come in
contact with the bars. Cement wash to bars shall not be
permitted.
19.5 Welding:
i) Where specified all welding shall be carried in accordance
with IS: 2571. Only qualified welders shall be permitted to
carry out such welding.
ii) For cold twisted reinforcement, welding operation must be
controlled to prevent a supply of large amounts of heat larger
than that can be dissipated. The extreme non twisted end
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portion shall be cut off before welding. Electrodes with futile
coating should be used.
iii) The welding procedure shall be approved by the Engineer and
tests shall be made to prove the soundness of the welded
connection.
19.6 Measurement:
i) The weight of steel to be paid for at the contract rates shall be
the weight of bars as mentioned on the drawings or as
instructed by the Engineer including stirrups, ties, spacer bars,
chairs and any other steel works specified as reinforcement
but excluding welding and cover blocks. Laps as specified on
the drawing shall be paid for. Laps required because of the
contractor’s use of shorter bars will not be paid for.
ii) The weight of any stirrups and tie bar shall be computed from
the dimension given on the drawings or bending schedules.
The weight in Kg/metre shall be taken as 0.785 kg/metre per
100 mm2 of cross section.
20.0 PROVIDING AND FIXING 100 MM DIA AC/PVC PIPE FOR
WEEP HOLES:
20.1 Scope of work, item to include:
i) Pipes of respective diameter, fitting, cement mortar, cement
concrete and necessary fixtures.
ii) All necessary labour, materials and use of tools.
20.2 Mode of Measurement and Payment :
The contract rate shall for one meter or part thereof pipe actually laid.
The measurement shall be over all the fittings along with the centre line
from end to end.
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16.0 Providing Trap/Granite/Quartzite/Gneiss Rubble Filling behind the
abutment, return walls etc. complete.
16.1 MATERIALS :
The stones to be used shall be broken rubble with fairly regular shape
and not weathered or decayed stones. Stones shall be selected for their
large size. The stones shall be about 0.015 cu.m. or 15 litres in size
unless otherwise ordered by the Engineer, having regard to the nature
of the stone being quarried. The stones to be used for wedging in the
joints between stones shall be chips of such size as to snugly fill up the
interstices in most cases. All suitable rubble obtained from foundation
excavation shall be made use of first. The rate to be charged for this
rubble to the contractor shall be that which is entered in the Schedule
“A” and if not so entered, the Divisional schedule rate current at the
time of tender.
16.2 DETAILS OF CONSTRUCTION :
Dewatering if necessary shall be done according to specification No.
BR.4 of Red Book. The bed on which rubble filling is to be laid shall be
cleared of all loose materials leveled and consolidated and got
approved by the Engineer before starting rubble filling. Rubble filling
behind abutments, returns or wings shall be laid in regular horizontal
layers of not more than 30 cm. in thickness closely packed and
compacted and firmly set with their broadest face downwards. The
interstices between adjacent stones shall be wedged in with spalls of the
proper size, well driven in with hammers or wooden mallets to ensure
tightly packed layers. Such wedging shall be carried on simultaneously
with the placing in position of the larger stones in each layer and shall
in no case be permitted to fall behind. Each layer shall be packed and
completed before the upper layer is started.
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Backfilling required to be done if any, on the river-side of the abutment,
wings or returns shall be done simultaneously with the filling on the
landside. Special precautions should also be taken to prevent wedging
action against masonry. The concrete shall have been fully cured before
rubble filling.
16.3 ITEM TO INCLUDE :
1) Supplying broken rubble and spalls of approved quality and size.
2) All labour, materials and use of equipment and tools for properly
laying, hand packing and compacting the rubble.
3) Any other incidental charges to complete the work as per
sanctioned plan including dewatering unless separately provided
in the tender.
16.4 MODE OF MEASUREMENT & PAYMENT :
Rubble filling shall be measured in cubic metres limiting the dimensions
to those shown in the plan or as directed by the Engineer. The
dimensions shall be measured to two places of decimals in metres and
quantities worked out to two places of decimals of a cubic metre.
No deduction shall be made for voids.
The contract rate shall be for a unit of one cubic metre.
17.0 PROVIDING AND CASTING IN SITU M-20/M-25/M-30 USING READY
MIX CONCRETE:
All concrete works will be by providing and casting RCC & PCC M-
20/M-25/M-30 by using Ready mix concrete manufactured by any
reputed manufacturer approved by Engineer-in-charge using maximum
20mm graded trap stone aggregate for RCC raft foundations, walls,
beams, slab including dewatering, centering, form work, etc. and
including all taxes etc. complete.
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17.1 Scope of work & item to include-
1. The item refer to ready mix concrete required for R.C.C. & P.C.C.
works as mentioned above procured from reputed manufacturer
approved by Engineer. The contractor shall be conforming to IS:
456-2000 or its amendments for controlled cement concrete.
The material requirement shall be completed according to
Standard Specifications No.B.7.1. refer Page No.38 for controlled
cement concrete.
2. The item include manufacture with ingredients, control
temperature, transportation, pumping, placing, vibration and
curing of Ready mix concrete and all taxes, excise duty, sales tax,
octroi, insurance etc. levied by Govt/Semi-Govt/local authority and
cost of ready mix concrete and any penalty, additional charges for
controlling temperature upto casting, or any other charges levied
by the manufacturer.
3. Proportioning of the mix/mix design shall be decided by the
contractor/RMC manufacture to achieve strength specified in item
& shall be get approved by Engineer-in-charge. The
proportioning of ingredients, use of ingredients and mix designs
parameters for various slumps shall be got approved by Engineer-
in-charge prior to mix design.
4. Scaffolding shall conform to specifications No.B.6.5 (a) and got
approved by the Engineer.
5. Forms shall conform to specifications No.B.6.5 (b).
6. The concrete shall be pumped to the final positions as quickly as
possible by methods which will prevent segregation and loss of
ingredients.
7. The concrete shall be placed into its final position, compacted and
finished before initial setting commences. The method of placing
shall be such as to avoid segregation. Placing shall be done in a
balanced manner to avoid eccentric loads on the form work.
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As far as possible the concreting shall be done continuously and
construction joints avoided.
If the area to be concreted is under water, the water shall be
removed by bailing out or using pumps and other devices.
8. Compaction shall be done by mechanical vibrators and also by
rods so that a dense concrete is obtained.
9. The concrete shall be adequately cured.
10. Immediately after the removal of forms, any undulations,
depressions, cavities, honey combing broken edges or corners
height spots defects shall be made good and finished with cement
mortar 1:3. But necessity of such finishing must be exceptional
and the total not exceed 1% on an average.
11. Concrete which is partially hardened shall not be tempered or re-
mixed but shall be disposed off as desirable.
12. Sampling and testing shall be done as per I.S. 456 (latest version).
13. All labour, materials use of equipment, tools and plant, installing
and removal of scaffolding, false work and forms and branching
necessary for the satisfactory completion of item.
14. Compensation for injury to persons and damage to work or
property.
15. Establishment of site laboratory.
17.2 Testing-
Cubes of 15 cm x 15 cm x 15 cm size shall be cast on the first day and
tested for compression at 7 and 28 days. Later on, if the Engineer so
directs, frequency of sampling be mutually agreed up on and approved
as per quantum received on site.
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17.3 Mode of measurement and payment-
The contract rate shall be for a unit of one cubic metre of concrete. The
concrete shall be measured for its length, breadth and depth limiting
dimensions to those specified on the drawings or as ordered by the
Engineer. No deduction shall be made for reinforcing steel bars and
anchor bars. No deduction shall be made for embedded structural
steel, if there combined sectional area is less than 500 sq.cm. Holes for
anchor shall not be deducted nor payment made for grouting these
holes. The sizes of R.C.C. members assumed in the estimate or
preliminary drawings are likely to be changed. The contractor shall not
be entitled to extra claims due to such changes.
17.4 READY – MIXED CONCRETE :
Ready Mixed concrete may be manufactured in a central automatic
weigh Batching plant and transporting to the job in agitating transit
mixers.
The maximum size of coarse aggregate shall be limited to one third of
the smallest inside diameter of the hose or pipe used for pumping.
Provision shall be made for elimination over-sized particle by screening
or by careful selection of aggregates. To obtain proper gradation it
may be necessary to combine and blend certain fractional sizes of
aggregates. Uniformity of gradation throughout the entire job shall be
maintained.
The quantity of coarse aggregate shall be such that the concrete can be
pumped, compacted and finished without difficulty.
Fine Aggregates
The gradation of fine aggregates shall be such that 15 to 30 percent
should pass the 0.30 mm screen and 5 to 10 percent should pass 0.15
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mm screen so as to obtain a pumpable concrete. Sands which are
deficient in either of these two size should be blended with selected
finer sands to produce these desired percentages. With this gradation
sands having a fineness modulus between 2.4 and 2.8 are generally
satisfactory. However, for uniformity the fineness modulus of the sand
should not vary more than 0.2 from the average value used in
proportioning.
Water, Admixture and slump:
The amount of water required for project concrete consistency shall take
into account the rate of mixing, length of haul, time of unloading and
ambient temperature conditions.
Additions of water to compensate for slump loss should not be restored
to nor should the design maximum water-cement ratio be exceeded.
Additional dose of be retarder be used to compensate the loss of slump
at contractor’s cost. Retempering water shall not be allowed to be
added to mixed batches to obtain desired slump.
Transportation:
The method of transportation used should efficiently deliver the
concrete to the point of placement without significantly altering its
desired properties with regard to water – cement ratio, slump, and
homogeneity.
The revolving – drum truck bodies of approved make shall be used for
transportation the concrete. The number of revolutions at mixing speed,
during transportation and prior to discharge shall be specified and
agreed upon. Reliable counters shall be used on revolving drum truck
units. Standard mixer uniformity tests, conforming to ASTM Standards C
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94-69 “Standard Specification for Ready mix Concrete” shall be carried
out to determine whether mixing is being accomplished satisfactorily.
Field Control: -
Sampling at both truck discharge and point of final placement shall be
employed to determine if any changes in the slump and other
significant mix characteristics occur. However, for determining strength
of concrete, cubes shall be taken from the placement end of line.
Planning:
Proper planning of concrete supply, pump locations, line layout placing
sequence, and the entire pumping operation shall be made and got
approved. The pump should be as near the placing are as practicable,
and the entire surrounding area shall have adequate bearing strength
to support concrete delivery pipes. Lines from pumps to placing area
should be laid out with a minimum of bends. For large placing areas,
alternate lines should be installed for rapid connection when required.
Standby power and pumping equipment should be provided to replace
initial equipment, should breakdown occur.
The placing rate should be estimate so that concrete can be ordered at
an appropriate delivery rate.
The placing rate should be estimate so that concrete can be ordered at
an appropriate delivery rate.
Time in transport shall be as per IS: 4926-2003.
Information to be supplied by the RMC producer shall be as per Clause
No.8 of IS: 4926-2003.
Information to be included in the delivery ticket to the purchaser shall
be as per Annexure “G” of IS: 4926-2003.
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Material testing reports shall invariably be submitting by the producer
as per Annexure “B” of IS: 4926-2003
Time in transport i.e. the time of loading/mixing water to the time of
discharge from the truck mixer shall not be more than 2 hrs.
18.0 Disposal of surplus excavated excess materials upto specified lead
including loading, transporting, unloading, stacking, spreading,
laying in layers and leveling etc. complete.
18.1 Scope of work and items to include :
All labour, material and equipment required for loading,
conveyance, unloading, stacking or spreading the materials for
satisfactory completion of the item and the incidental charges,
royalties, compensations or damages required to be paid.
18.2 Mode of measurement and payment :
The distance of conveyance shall be measured from the centre of
gravity of the bulk of excavation, to the centre of gravity of the finished
stacks or spreading of disposal. This distance shall be the shortest
practicable route between the above mentioned two centers of gravity
as decided by the Engineer although the actual route taken by the
contractor to lead out the materials may be longer. The shortest
practicable route which can be used by the contractor or which the
department could have used itself, whichever is shorter. The extra lead
is obtained by deducting the initial free lead of 50 meters from the
above. The lead shall be measured in units of 100 m. In the former
case 25 m. or above shall be taken as one unit and less than 25 m.
shall be ignored. In the latter case 50 m. or above shall be taken as
one unit and less than 50 m. shall be ignored. All lifts are included in
the rate.
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The contract rate shall be for one cubic meter of materials conveyed to
the placed disposal.
Measurements shall normally be taken by leveling sections and chaining
distances between them.
The measurements of the sections shall be limited to the dimensions
shown on the drawings or those ordered by the Engineer in writing. The
dimensions shall be recorded correct upto two places of decimals of a
metre. The sectional areas shall be worked out correct upto two places
of decimals of a Sq. mtr. The quantity shall be worked out correct upto
two places of decimals of a cu.m. by the average end area method.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :
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Checklist for Ready Mix Concrete
Supply of Concrete (RMC) Name of Work : C.A.No. : Name of Contractor/Client : Sr. No.
Description Detail Information
1. Name of RMC manufacturer with plant address & telephone nos.
2. Name of Plant In Charge with qualification & Experience
3. Date of commissioning of RMC plant
4. RMC Plant details
a) Capacity of plant Design
Actual Output
b) Whether plant fully automatic/Semi automatic
c) Conveyor belt for loading aggregate
d) Aggregate bin with various compartments for different aggregate
e) Mixer type
f) No. of Transit Mixers with capacity
g) No. of pumps
h) No. of placer boom
i) i) Separate silos with capacity for Cement
ii) Fly ash
j) Water storage arrangement
k) Plasticizer arrangement
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Sr. No.
Description Detail Information
l) Arrangement for alternate power supply
m) Arrangement for maintenance of P & M.
n) Storage capacity for raw materials
o) Arrangement for curing tank & frequency of changing water
p) Calibration frequency of plant with traceability (every three months)
q) Whether you observe the accuracy/sensitivity of measuring equipments within the limits of IS 4926:2003
r) Details of Calibration frequency of various testing equipments with traceability & its record
5. Quantity of RMC manufactured daily
M20
M25
M30
M35
6. Source of materials
Cement-whether bulk supply
Coarse aggregate
Fine aggregate – Sand
Crushed Sand
Water
Chemical Admixture
Mineral Admixture (Fly ash)
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Sr. No.
Description Detail Information
7. Details of quality control testing &
records of various constituents
materials
A) Cement (IS 8112, IS 12269)
Whether MTC
(weekwise) available
Fineness
Soundness
IST & FST
Consistency
Compressive strength of cement mortar cubes-no. of cubes
Chemical tests
Physical & chemical testing at external lab. & its frequency
B) Coarse Aggregate (IS 383 : 1970)
Gradation
Specific gravity
Flakiness & elongation Index
Impact value/Crushing value/ Abrasion value
Soundness
Alkali Aggregate reactivity test
C) Fine aggregates (IS 383 : 1970)
Gradation
Specific gravity
Determination of clay, fine silts, & fines dust
Free moisture content
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Sr. No.
Description Detail Information
Soundness
Water absorption
Organic impurities
D) Admixture (IS 9103 : 1999)
Whether MTC is available for every
batch & brand
Dry Material content
pH value
Relative Density
Compatibility
Ash content
Chloride ion content
Performance test for slump retention &
compressive strength test at 24hr. on
control mix.
Periodical testing at external lab. For crosscheck
E) Fly ash
(IS 3812 : 2003)
Whether MTC available
Physical properties
1. Specific surface
2. Residue on 45 micron IS sieve
3. Lime reactivity
4. Comp. Strength
5. Soundness
Chemical properties chemical Analysis
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Sr. No.
Description Detail Information
Periodical testing at external lab. For
crosscheck
F) Water (IS 456 : 2000, IS 3025 : 1964)
pH value
Sulphates
Chlorides
Organic matter
Inorganic matter
Suspended matter
Periodical testing at external lab. For
crosscheck
G) Concrete (RMC)
a) Mix Design & Trial Mixes
a. Method of design
(whether as per IS or any other)
b. Whether it is as per requirement of client or your own
b) Daily check on preparation of starting
slips for each of grades based on adjustments of moisture content or
water absorption (at 7,11,15,19 hr.) as
per schedule
c) Analysis of fresh concrete Mix as per IS
1199 – 1959.
d) Temperature of the fresh Concrete Mix
e) Slump at the Plant
f) Check for Density for each grade
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Sr. No.
Description Detail Information
g) Cube Comprehensive Strength &
Acceptability Records of tests
h) Permeability apparatus
i) NDT equipments & co-relation with
cube compressive strength
j) Cement content test
k) Chemical analysis of concrete samples
l) Statistical analysis of test results & modification to the mix proportion based on standard deviation of plant
m) Special Precautions taken
a. During Rainy season
b. During Hot season
8. Technical staff available at plant with qualification & experience
9. Technical Staff to accompany transit mixer with qualification & experience
10. Time of availability of RMC supply
11. Delivery tickets as per Annex G (Cl.9.4) of IS 4926-2003
(Alongwith every load/transit mixer)
12. Test frequency for all ingredients of concrete-whether as per IS 4926-2003
13. Any incidents of failure in quality supplied
14. Any incidents of failure in timely supply
15. Details of works where RMC used
Major Clients
16. Any other information
17. Third Party Inspection Name of agency,
Frequency & Report.
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Sr. No.
Description Detail Information
18. Monitoring of Ready mixed Concrete as per IS 4926:2003
a) If more than one admixture is used, confirmation of their compatibility
b) IST & FST of concrete when admixture is used at adopted dosage (As per IS 8142)
c) Time of transportation (Shall not exceed 2 hours for normal case.)
d) Frequency of Compressive strength (One sample (3 specimens) for every 50 Cum or 50 batches whichever is greater).
e) Any additional compliance criteria shall be declared to the producer by the purchaser prior to supply & shall be mutually agreed upon.
f) The action to be taken in case of non-compliance shall be declared & mutually agreed upon.
Also enclosed herewith Annex –I i.e. Material Testing requirements as per IS 4926 : 2003.
Signature of RMC Supplier M/s. Name
Checked by
Executive Engineer ( )
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Annexure – I MATERIAL TESTING REQUIREMENTS AGGREGATES
Sr.
No.
Aggregate Property /
Parameter
Type of
Aggregate Test Frequency
Requirements for
normal monitoring
1. Grading i. Sand /Fine
aggregate
ii. Coarse
aggregate
Last 8 results
conform to IS 383
2. Particle density Over
dry Saturates surface
dry Apparent
All types 3 Monthly Last 4 results
+0.04
3. Absorption All types 3 Monthly Last 4 results +
0.04%
4. Bulk density Loose
Compacted
All types
All types
Monthly
Monthly
Last 4 results
+75 Kg. /Cum
5. Fines (Silt) content Sand Coarse Weekly
Monthly
Last 10 results
<75% maximum
allowed.
6. Aggregate Impact Value
Coarse Once per source / every changes of source
______
7. 10% fines Coarse Yearly ______
______
8. Flakiness Coarse Monthly Last 3 results
conforms to
standard.
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Sr.
No.
Aggregate Property /
Parameter
Type of
Aggregate Test Frequency
Requirements for
normal monitoring
9. Chloride content All types 6 Monthly Last 3 results
<0.01%
10. Aggregate abrasion
value ( Los Angeles
Method)
Coarse Yearly / Source
change
______
11. Soundness Fine & Coarse Yearly / Source
change
______
12. Potential Alkali
aggregate reactivity
including petrography.
Fine & Coarse 5 Yearly /
Source change
______
All other material cement, water, admixtures shall be tested as per requirement of
IS 456 : 2000.
Signature of Tenderer
Date.:
Chief Engineer & General manager(Tech)
Date.:
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LIST OF APPROVED MAKES AND
BRANDS OF MATERIALS The Contractor should distinctly understand that it will not be their prerogative to
insist on using a particular make/brand from amongst the approved ones. The final
selection will have to be done with the approval of Engineer. The provision will apply
where contractors do not state their choice of materials while submitting tenders. The
list given below is only indicative and not restricted to brands mentioned. Other
equipment brands may be approved at the discretion of the Engineer.
Sr. No.
Material Make/Brand
1. Construction Chemicals Flowcon 21, M/S BASF Construction Chemicals (I) Pvt.
Ltd., Sunanda Speciality Coating Pvt. Ltd., Pidilite
Industries Ltd., M/s. Tulsi Chemicals & Paints Pvt. Ltd.
2. Cement (43 Grade/
53 Grade OPC/PPC)
M/s The India Cement Ltd., M/s Ultratech Cement,
M/s Heidelberg Cement (I) Ltd., M/s Sanghi Industries
Limited, M/s Binani Cement Ltd.,
3. TMT/HYSD Steel M/s. Shyam Steel Industries Ltd., M/s. Jai Balaji
Industries Ltd.
4. Bricks Ordinary clay bricks of any bran conforming to
IS: 1877 with minimum crushing strength of
40 Kg/Sq.Cm. and water absorption percentage
restricted to 25% for bricks used in panel walls and
20% for bricks used in load bearing walls.
5. R.C.C. NP-2 Class Indian Hume Pipes, Premier Prestressed Concrete
Product Pvt. Ltd., Vaitarna Cement Pipe Industries,
Patel Hume Pipes, Bharat Metal Pressing Industries.
Signature of Tenderer Chief Engineer & General Manager (Tech.)
Date : Date :