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Transcript of TENDER NO. NKCC/085/2017-2018 PROPOSED … · In the tender document the following documents are...
Page 1 of 152
NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
TENDER NO. NKCC/085/2017-2018 PROPOSED REHABILITATION
WORKS OF UHT STORES AT SOSIANI
NEWKCC FATORY
CLOSING DATE – 19TH JUNE 2018
AT 10.00 A.M.
Page 2 of 152
NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
M/s …………………………………
………………………………………
………………………………………..
Dear Sirs,
RE: TENDER NO. NKCC/024/2017-18
PROPOSED REHABILITATION WORKS OF UHT STORES AT SOSIANI NEWKCC
FACTORY (Section 1)
You are hereby invited to submit a tender document for rehabilitation works of UHT stores at
Sosiani Newkcc Factory.
In the tender document the following documents are incorporated for your attention and action.
(i) A copy of form bond to be used.
(ii) List of works you have recently undertaken. (iii)Form of
tender to be filled by you.
(iv)Bid Security form (Tender Surety).
(v) Some of the preliminary notes which could influence your tender.
(vi)In the Bill of Quantities an item of General and Particular Preliminaries has been Included and
thus should be priced separately and be removed from the other items therein.
You are thus to tender for rehabilitation works of UHT stores at Sosiani Newkcc Factory.The
tender should be as per bill of quantities, specifications and drawings.
The site is located at Newkcc Sosiani Factory in Eldoret next to Newkcc Eldoret Factory.
The drawings for the works can be viewed at NKCC offices (Engineering Department) Creamery
House, Dakar Road during normal working hours.
Any clarification to the tender document should be forwarded in writing seven days before the
date of submission of the tender. Pn (a)
VISIT TO SITE
You are strongly advised to visit the site personally, check the extent of work and any other
factors/details which could influence your tender. Expenses incurred during such a visit will be met
by the tenderer and no claims will be allowed. ENSURE SITE VISIT CERTIFICATE IS SIGNED.
Page 3 of 152
NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
The sites visits are scheduled 5th June 2018 & 6th June 2018 from 10.00 am to 12.00 noon and 2.00pm
to 4.00pm and all prospecting tenderers are expected to attend on the said date. Minutes will be
maintained and circulated within three days of the final meeting. Tenderers will also be required to fill in the site visit certificate form attached to the tender document
and come with it to site during site visit so that its stamped and signed by NEWKCC signatories.
The Contact person is the Factory Engineer.
TYPE OF MATERIAL
Mostly the materials to be used will as specified in the BQ and other specification but mostly natural
stones ,normal roofing materials, sanitary, reinforcement, etc as need be .
CONTRACT
If your tender is successful you will be required to sign a contract with NEW KCC LTD and provide
a 10% Performance Bond in form of a Bank Guarantee from a reputable Bank. The period of
validity of Performance Bond will be stipulated in the contract together with other necessary
conditions.
The performance security shall be denominated in Kenya shillings and shall be in the form of;
a) Cash
b) Bank guarantee
c) Such insurance guarantee approved by the Authority
d) Letter of credit
ACCEPTANCE OF TENDER
NEW KCC LTD is not bound to accept the lowest or any tender.
EXTRA DETAILS
Contractor to attach detailed specification/information which in his view will assist him to
successfully complete the work. Details of such information should not be assigned cost since all
prices/rates should be within the Bill of Quantities. Contractor to note requirements detailed in
prequalification document
Contractors should be registered with National Construction Authority NCA 5 and above.
Page 4 of 152
NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
INVITATION TO TENDER Tenders are invited from interested and eligible firms/suppliers to submit sealed bids for the following:
Tender number Description
Bid
security
(Ksh)
Site visit Eligibility Closing/
opening
Date
NKCC/085/2017-18
Proposed
Rehabilitation
Works of UHT
Stores at Sosiani
Factory
250,000.00
5th & 6th June
2018
Open 19th June
2018 at
10.00 a.m
NKCC/086/2017-18
Supply, Installation
and
Commissioning of
Crate Washing for
Dandora Factory
150,000.00
29th/05/2018
30th/05/2018
Open
12th June
2018 at
10.00 a.m
NKCC/087/2017-18
Provision of
Vehicle tracking
services
50,000.00
N/A Open 12th June
2018 at
10.00 a.m
NKCC/088/2017-18
Provision of Group
Life Policy Cover,
Group Personal
Accident Policy
Cover & Work
Injury Benefit ACT
Insurance Policy
Cover
300,000.00
N/A
Open
12th June
2018 at
10.00 a.m
NKCC/063/2017-18
Supply and
delivery of plastic
milk bottles (Re-
advert)
50,000.00
N/A
Open 12th June
2018 at
10.00 a.m
NKCC/089/2017-18 Provision of Cloud
Based disaster
Recovery Services
500,000.00
N/A
Open 12th June
2018 at
10.00 a.m
NKCC/090/2017-18 Provision of
Automated Sales
Management
300,000.00
N/A
Open 12th June
2018 at
10.00 a.m
Page 5 of 152
NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
System
NKCC/091/2017-18 Supply, Installation
& Commissioning
of Eldoret Factory
LAN Network
Cabling
100,000.00
29th/05/2018
30th/05/2018
Open
12th June
2018 at
10.00 a.m
PREQUALIFICATIONS
NKCC/066/2018-19
Prequalification on
provision Legal
Services
N/A
N/A
Open 5th June
2018 at
10.00 a.m
NKCC/067/2018-19
Prequalification of
Supply of Office
Furniture
N/A
N/A
Youth/Women 5th June
2018 at
10.00 a.m
Complete tender/Prequalification documents with detailed information may be obtained from the Office of the
Head of Procurement, New KCC Ltd, Dakar Road off Enterprise Road between 9.00 a.m. to 4.00 p.m, upon
payment of a non-refundable fee of Kshs. 1,000/- (Kshs. One Thousand only) per tender document, paid in cash
or Bankers Cheque. Prospective bidders may also download the tender documents from
http://supplier.treasury.go.ke free of charge and New KCC Website (www.newkcc.co.ke). Bidders are required
to send/e-mail their names and contact details to: [email protected].
Tenders must be accompanied by a Bid Security as specified above. The bid security should be valid for 120 days
from the tender closing/opening date and in form of either bank guarantee, cash, Insurance Company Guarantee, a
Letter of Credit, or Guarantee by a Deposit taking Microfinance Institution, Sacco Society, the Youth Enterprise
Development Fund or the Women Enterprise Fund.
Completed tender documents in plain sealed envelope clearly marked with Tender Number and Description should
be addressed to:
The Managing Director
New KCC Ltd
P.O. Box 30131-00100
Nairobi
To be received not later than 10.00 a.m on the closing /opening date shown above.
MANAGING DIRECTOR
For enquiries email:[email protected]
Page 6 of 152
NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
PART I
TECHNICAL BID
Page 7 of 152
NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
LIST BELOW WORKS RECENTLY UNDERTAKEN AND COMPLETED OF
SIMILAR NATURE AS REQUIRED
MINIMUM: 3 Major works (NKCC may demand a visit to verify information
given
NO.
NAME & ADDRESS OF CLIENT
/CONSULTANT/DATES
WORK DONE
TOTAL
COST
(KES)
MATERIALS
USED
1.
2.
3.
4.
5.
6.
NOTE CONTRACTOR TO ATTACH LIST OF TECHNICAL PERMANENT
STAFF IN THE EMPLOYMENT. ALSO EQUIPMENTS FOR SUCH WORKS.
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NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
ONLY CONTRACTORS REGISTERED WITH NATIONAL CONSTRUCTION
AUTHORITY NCA 6 AND ABOVE WILL BE CONSIDERED
APPENDIX I - QUALIFICATION EVALUATION CRITERIA AND
MARKING SCHEME
MANDATORY REQUIREMENTS.
All the following requirements to be met otherwise tenderer’s bid will be disqualified: -
1. Certificate of incorporation.
2. Valid business permit.
3. Valid tax compliance certificate.
4. National construction authority registration category 6 and above.
5. Confidential Business questionnaire form SS3 duly completed form of tender
security duly completed
6. Power of Attorney for tender and contract signatory for both joint ventures and non-
joint ventures.
7. Bid bond of Kshs 250,000.00
8. Site visit certificate duly signed by the Factory Engineer.
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NKCC/085/2017-18 Proposed Sosiani Rehabilitation Works of UHT Stores
TECHNICAL EVALUATION
EVALUATION FACTORS MAXIMUM
MARKS
1.0 PAST PERFORMANCE AND TRACK RECORDS 100
1.0 Construction Experience on Relevant project
Experience in major rehabilitation works to a building or
buildings/civil/steel works at least 4 projects.
(Evidence by award letter, Local purchase orders and contacts)
30
1.1 Duly signed recommendation from 5 Referees worked for
Past clients (Government Ministries or corporations, banks
or NGOs)
5
2.0 AVAILABLE RESOURCES FOR THE PROJECT
2.10 Personnel Resources
Staff qualification. Technical personnel to be engaged in
the design & construction works accompanied by C.V.s
(Minimum of 5 key staff each 2 marks)
10
2.20 Organization plant and Equipment
Adequacy of the Construction Equipment proposed for the
works
5
2.30 Financial Resources –Provide 5yrs Audited accounts 20
3.0
Prop
osed
Work
Meth
odol
ogy
5
Proposed Work Methodology
10
4.0 Provide completion certificates Minimum of 5 projects each 4 marks.
20
PASSMARK 80/100
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NKCC/085/2017-18 PROPOSED REHABILITATION OF UHT STORES AT SOSIANI
NOTES ON RESPONSE EVALUATION
The evaluation will be made on the basis of the evaluations of applicant responses as
contained in the application.
The procuring entity will review the information form the applicant as provided in the
pre qualification documents submitted and rank the applicant performance on merit of
highest weighted marks.
The performance will be evaluated and marks awarded on each evaluation factor as
shown on the evaluation criteria.
This relative weight given on each factor is given as maximum scores on that factor.
Total maximum score on all the factors shall be maximum 100 marks
The applicant with 80 and above will be considered for the financial evaluation and
analysis. The applicants with marks less than 80 will be disqualified for financial
evaluation.
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NKCC/085/2017-18 PROPOSED REHABILITATION OF UHT STORES AT SOSIANI
ITEM DESCRIPTION KSHS.
PRELIMINARY NOTES:
Below are some of the General and Particular Preliminary notes which
could influence the tender on the aspect of preliminary to be inserted in
Bill of Quantities.
A. CONTRACT AGREEMENT The form of contract to be signed will include all documents and
specifications where Bill of Quantities are part of the contract
The insertion to the appendix will be as follows: -
Period of final measurement - 3 months from practical completion
of works.
Defects liability period - 6 months from practical completion
but bond to be valid for one year.
Liquidated and ascertained - at a rate of Kshs10,000 per
damages calendar week or part thereof.
Period of Interim Certificate - Monthly. But could be shorter
depending on performance on site.
Period of honoring - 14 to 30 days.
Certificate
Minimum payment of - Kshs.1, 500,000.00
Certificate.
Percentage of certified - 10%
value retained
Limit of retention fund - 10%
B. FLUCTUATION
This contract will have no fluctuations and the tenderer is asked to
allow for any material and labour cost escalation during the
construction period.This will be a fixed price contract
Total Pn
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NKCC/085/2017-18 PROPOSED REHABILITATION OF UHT STORES AT SOSIANI
ITEM DESCRIPTION KSHS.
A.
B
C
D
E
BOND
A bond of 10% of the contract sum will be required in accordance with
of conditions of contract.
INSURANCE
Allow for insurances as defined in the conditions of contract. Contractor
should have all risk insurance policy which is valid.No payment will be
effected before this condition is met and maintained.
LABOUR CAMPS
Labour camps will not be permitted on site. The contractor to allow for
transporting labor to and from site.
EMPLOYER
The employer is New Kenya Co-operative Creameries Ltd., New Kenya
Co-operative Creameries Ltd., Engineering Manager, Architect, Quantity
Surveyor, where used in any contract document shall be synonymous.
FORM OF CONTRACT
.A copy of contract agreement, form of bond, drawings, maybe seen at the
offices of NEW KCC LTD, Dakar Road, Industrial Area, Nairobi, on any
working day until the time appointed for the submission of tenders.
In the contract agreement/documents and the Bills the terms Architect/
Engineer and Quantity Surveyor are deleted and replaced by Engineering
Manager, NEW KCC LTD.
TOTAL
pn
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NKCC/085/2017-18 PROPOSED REHABILITATION OF UHT STORES AT SOSIANI
ITEM DESCRIPTION KSHS.
A If the contractor considers that compliance with any of the conditions of contract which the headings are set out hereunder involves expense
to him which is not included elsewhere in his prices he shall set
down/insert such prices in General and Particular Preliminaries
Section.
Conditions:
1. Contract obligations
2. Architect’s Instructions
3. Contract documents
4. Statutory obligations notices fee and charges
5. Levels and setting out of the works
6. Materials, goods and workmanship to conform to description,
testing and inspection
7. Royalties and patent rights
8. Foreman in charge
9. Access for Architect to works
10. Clerk of works
11. Variation, provisional and prime cost sums
12. Contract Bills
13. Contract Sums
14. Unfixed goods and materials
15. Practical completion and defects liability
16. Sectional completion
17. Assignment or sub-letting
18. Injury to persons and property and employer’s indemnity
19. Insurance against injury to persons and property
20. Insurance of works against fire, e.t.c.
21. Damages for non completion
22. Possession, completion and postponement
23. Extension of time
24. Loss and expense caused by disturbance of regular progress of the
works
25. Determination by employer
26. Determination by contractor
27. Nominated sub-contractor
28. Nominated supplier
29. Artists and tradesman
30. Certificates and payments
31. Bond
32. Fluctuations
33. War damages
34. Antiquities
35. Arbitration
Total pn
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NKCC/085/2017-18 PROPOSED REHABILITATION OF UHT STORES AT SOSIANI
ITEM DESCRIPTION KSHS.
A
B
C D
E
BOND The Contractor shall find and submit on the form of tender the name of
one surety who shall be an establishment bank, insurance company or
fidelity guarantee corporation and who will be willing to be bound to
NEW KCC LTD in an amount equal to ten percent of the contract for
the due performance of the contract up to the date of completion as
certified by the Architect and who will when and if called upon, sign a
bond to that effect on form of bond. (Without the addition of any
limitations) on the same day as the contract agreement is signed. In the
event of the surety name in the form of tender not being approved by
the employer the contractor shall furnish within seven days another
surety to the approval of the employer.
PLANT, TOOL AND VEHICLES
Allow for providing all scaffolding, plant, tools and vehicles required
for the works except in so far as maybe stated otherwise herein.
TRANSPORT
Allow for transport of workmen, materials, e.t.c. to and from the site at
such hours and by such routes as maybe permitted by the competent
authorities.
MATERIALS AND WORKMANSHIP
All materials and workmanship used in the execution of the works
shall be of the best quality and description unless otherwise described.
The contractor shall order all materials as early as necessary to ensure
that they are on site when required for use in the works. The Bill of
Quantities shall not be used for the purpose of ordering materials.
CONTRACT SUM
Any arithmetic errors noted, the contract sum will not be altered but a
percentage of the error will be determined (plus or minus) and be
applied to all measured work excluding preliminaries and PC sums
Total pn
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ITEM DESCRIPTION KSHS.
A
B
C
D
SIGN FOR MATERIALS SUPPLIED
The Contractor will be required to sign a receipt for the articles and
materials supplied by the Architect at the time of taking delivery
thereof as having received them in good order and condition, and will
thereafter be responsible for any loss or damage and for replacements
of any such loss or damage with articles at current market prices
including customs duty, all at the contractor’s own cost and expenses
to the satisfaction of the Architect.
SECURITY OF WORK E.T.C.
The contractor shall be entirely responsible for the security of all
works, stores, materials, plant, personnel, e.t.c. both his own and sub-
contractor’s and must provide all necessary watching, lighting and
other precautions as necessary to ensure security against theft, loss or
damage and protection of the public.
EXISTING PROPERTY/FACTORY OPERATIONS
The contractor shall take every precaution to avoid damage to all
existing property including roads, cable, drains and other services, and
he will be held responsible for and shall make good all such damage
arising to the satisfaction of the Architect. Operations in the
organization will be going on and interferences should be minimal.
Co-ordinate with NKCC management all the time.
VISIT SITE AND EXAMINE DRAWINGS
The contractor is recommended to examine the drawings and visit the
site the location of which is described in the particular preliminaries
hereof. He shall be deemed to have acquainted himself therewith as to
its nature, position means of access of any other matter which may
affect his tender. No claim arising from this failure to comply with this
recommendation will be considered.
TOTAL
pn
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ITEM DESCRIPTION KSHS.
A
B
B
C D
AREA TO BE COVERED
The area of the site which maybe occupied by the contractor for the
use of storage and for purpose of erecting workshops, e.t.c. shall be
defined on site by the Architect.
SUPERVISION AND WORKING HOURS
The works shall be executed under the direction and to the entire
satisfaction in all respect of the Architect who shall at all times during
normal working hours have access to the works and to the yards and
workshops of the contractor and sub-contractors or other places where
work is being prepared for the contract.
The working hours shall be those normal hours generally worked in
building and civil engineering trades in Kenya. No work shall be
carried out at night or gazetted holidays unless the Architect shall so
direct.
PROVISIONAL SUMS
The term “provisional sum” wherever used in these bills of quantities
shall have the meaning stated in section A item A7(i) of SMM
mentioned in conditions of contract. Such sums are net and no
addition shall be made to for profit.
PRIME COST (OR P.C.) SUMS
The term “prime cost sum” wherever used in these bills of quantities
shall have the meaning stated in section A item A7(I) OF SMM
mentioned in condition No. 12 of the conditions of contract.
Persons or firms nominated by the Architect to execute work or to
provide and fix materials or goods as stated in condition No. 27 and 28
of conditions of contract are descried herein as nominated sub-
contractors. Persons or firms so nominated to supply goods or
materials are described as nominated suppliers.
P.C sums ,provisional sums and contingency sums will be expended
with written authority of NKCC
TOTAL
pn
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ITEM DESCRIPTION KSHS.
A
B
C
PROVISIONAL WORK
All works described in these bills of quantities is ‘provisional’ and
subject to final measurement in order to ascertain the actual quantity
executed for which payment will be made. Final account to consider all
anomalies, discrepancies, errors in the BQ and interim payments if any.
All “provisional” and other work liable to adjustment under this contract
shall be left uncovered for a reasonable time to allow all measurements
needed for such adjustment to be taken by the Architect immediately the
work is ready for measuring, the contractor shall give notice to the
Architect.
If the contractor makes default in these respects, he shall if the Architect
so directs uncover the work to enable all measurements to be taken and
afterwards reinstated at his own expense.
ALTERATIONS TO BILLS, PRICING, E.T.C.
Any unauthorized alteration or qualification made to the text of the bills
of quantities may cause the tender to be disqualified and will in any case
be ignored. Any missing page or information should be reported for
clarification seven days before submission of tender in writing.
The contractor shall be deemed to have made allowance in his prices
generally to cover any items against which no price has been inserted in
the priced bill of quantities.
PROTECTION OF THE WORKS AND SITE
Provide protection of the whole works contained in the bills of
quantities, including casing up, covering, hoarding or such other means
as may be necessary to avoid damage to the satisfaction of the Architect
and remove such protection when no longer required and make good any
damage which may nevertheless have been done at completion free of
cost to the employer
TOTAL
pn
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ITEM DESCRIPTION KSHS.
A B
C
D
REMOVE OF RUBBISH E.T.C.
Remove all rubbish and debris from the building and site as it
accumulates and at completion of the works and remove all plant,
scaffolding and unused materials at completion. Clean and flush all
gutters, down pipes, e.t.c. to satisfaction of the engineer.
FIRM PRICE CONTRACT
Unless otherwise specifically stated in particular preliminaries, this is a
firm price contract and the contractor must allow in his tender for any
increase in the cost of labor and/or materials during the currency of the
contract. No claim for increased costs will be allowed arising from
fluctuations in duties as defined in of the conditions of contract.
MATERIALS ON SITE
All materials for incorporation in the works must be stored on or adjacent
to the site before payment is effected unless specifically exempted by the
Architect. This is to include materials from main contractor, nominated
sub-contractors and nominated suppliers. Payment will be done for only
materials timely delivered on site and not
otherwise. Materials on site payment to be vetted carefully in advance.
CONTRACT CURRENCY TO BE ADOPTED
All the works will be priced in Kenya Shillings and be in use during the
whole period of the contract. No foreign currencies will be used and
thus fluctuations due to their market changes will not be accepted after
the award and during the 90 days in which the tender is valid.
TOTAL
TOTAL COST FOR GENERAL & PARTICULAR PRELIMINARIES
CARRIED TO SUMMARY PAGE
pn End section 1
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SPECIFICATIONS STRUCTURAL STEELWORK
PART 1
STRUCTURAL STEELWORK (section 2)
1.1 General Requirements
Unless otherwise specified on the drawings or described in the specification, all
steelwork shall comply with the requirements of BS part 2: 1969 “The Use of
structural Steel in building” Including the current addenda and BS 2853:
1957 the design and testing of steel overhead runaway beams.
1.2 Drawings
Two copies of all shop drawings by the contractor shall be submitted to the
Architect for his approval, but this approval shall in no way relieve the
Contractor of his responsibilities for the work under the Contract and the
Contractor shall be fully responsible for ensuring that the details and
workmanship result in correct assembly of the work. These drawings shall be
submitted to the Architect in sufficient time for any amendments to be
incorporated in the works.
No variations or alterations from the approved shop drawings and this
specification shall be permitted without the written consent of the Architect.
1.3 Substitution of Materials
No substitution of materials or section sizes shall be permitted without the
express written permission of the Architect. Notification of any substitutions
offered by the Contractor shall be made within 28 days after the award of the
Contract.
1.4 Testing Laboratory
Testing of materials is to be carried out at the Contractor’s expenses at a
testing laboratory as approved by the Architect.
SS
1.5 Inspection
The Contractor shall give the Architect ample notice of the beginning of the
work w h e r e steel work is being fabricated and at all places where materials
for the work are being manufactured or from which the y are being supplied. No
material shall be manufactured or work done in the shop before the Architect has
been so notified.
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The contractor shall supply the Architect with copies of the ordering list of all
materials which are obtained from rolling mills and shall also supply test
sheets for such materials. Lists of materials to be obtained from stock with the
name of manufacturers shall be supplied. If test sheets for these materials are not
available, the Contractor may be required to dispatch sample pieces as directed
to an approved laboratory. In this case the Contractor is required to provide the
sample pieces free of charge and pay the carriage to the testing work. The
decision of the Architect as to the acceptance or rejection of the materials in view
of reports obtained from the testing works shall be final. The Contractor shall
bear the cost of all test, materials and workmanship.
MATERIALS
1.6 Structural Steel
Unless otherwise specified structural mild steel shall comply in all respects
with requirement s of BS 4360 Grade 43A.
Hot rolled Hollow sections shall comply with the requirements of BS 4360,
43C.
The dimensions of all structural rolled shapes except angles, the form, weight,
tolerance etc., shall conform to the requirements of BS 4: “Structural steel
sections, part 1 Hot rolled sections” including current addenda. Angles shall
comply with BS 4848 part 4 1972
Rectangular hollow sections shall conform to the requirements of BS 4848 part 2: 1975 “Hot –rolled Hollow Sections”
Cold formed zed purlins shall have a minimum yield stress of 200 N/ mm2.
1.7 Bolts, Nuts and Washers
Mild steel black bolts and nuts shall conform to the requirements of BS 4190:
“Black Bolts and Nuts” Washers shall comply with the requirements of BS
4320 “Black Washers”
SS
1.8 Electrodes
Electrodes shall conform to the requirements of BS 639: “Covered Electrodes
for the Manual Metal Arc Welding of Mild Steel”
1.9 Painting
Primer: All members will be shop painted with one coat of Red Lead Graphite
Primer, applied by brush employing a crisscross technique of semi- matt finish
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and suitable to provide a key for subsequent paint coating. (subject to clause
511)
Thinning if required, shall be done with mineral turpentine up to 15%
Method of application, surface preparation, drying time as well as any other
requirement shall be done in accordance with the manufacturer’s specification.
Shop painting shall be done after fabrication and within the specified time
after the metal surface have been cleaned. Any damage to he surface from
weather or other exposures should be avoided. Shop contact surfaces shall not
be painted unless specified. Unless otherwise specified, surfaces to be in contact
only after erection shall be painted except where the paint may interfere
with assembly.
The surfaces not to be in contact but which are inaccessible after assembly
shall receive three shop coats of the specified primer before assembly.
The areas of steel surfaces to be in contact with concrete shall not be painted.
Application of the primer shall be by brush employing a crisscross technique.
Paint shall be worked into all crevices and corners and all runs or sags shall be
brushed out. There will be a minimum of brush marks left in the applied paint.
FABRICATION
1.10 General
Structural Material, either plain or fabricated, shall be stored at the fabrication
shop above the ground on platforms, skids or other supports. It shall be kept free
from dirt, grease or other foreign matters and shall be protected as far as is
practicable from corrosion.
SS Structural sections before being worked must be straight. If straightening is necessary, it shall be done by methods that will not injure the Metal and sharp
kinks and bends shall be cause of rejection of the material.
Finished members shall be true to line and free from twists, bends and open
joints.
The ends of lacing bars shall be neatly rounded unless another form is
required.
The bearings shall be accurately machined square with the axis so that the
parts connected shall butt over the entire surface of contact.
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Slab bases and base plates shall be in one solid piece accurately machined
over bearing surfaces and shall be in effective contact over the whole areas.
Unless otherwise instructed a bearing face which is to be grouted directly to a
concrete foundation need not be machined if the bearing surface is true and
parallel to the machined upper face.
1.11 Holes and Bolted Connections
All holes punched or drilled, shall be drilled (punched) so that before any
reaming is done, a cylindrical pin 3 mm smaller in diameter than the normal
nominal size of the hole may be entered normal to the face of the member,
without drifting, in at least 75% of the contiguous holes in the same plane. If the
requirement is not fulfilled the badly drilled (punched) pieces will be rejected.
If any hole will not pass a pin 5 mm smaller in diameter than the nominal
size of the hole, a steel member having such a hole will be rejected.
When all holes are reamed or drilled, 85% of the holes in any contiguous
group shall, after reaming or drilling, show no offset greater that 1 mm
between adjacent thicknesses of metal.
The drifting done during assembling shall be only such as to bring the parts into
position and not sufficient to enlarge the holes or distort the metal. If any hole
must be enlarged to admit the bolt it shall be reamed.
Holes shall be truly cylindrical. The size of holes shall be 2mm greater than
the nominal diameter of the bolts unless otherwise specified, and shall make a
driving fit with the bolts. Holes shall be at right angles to the surface of the metal
so that both head and nut will bear squarely against the metal. Bolts shall be
driven accurately into the holes without damaging the thread.
The heads and nuts shall be drawn tight against the work with a suitable wrench.
Bolt heads shall be tapped with a hammer while nuts are being tightened. All
bolts shall have threads neatly and accurately finished. If for any reason the bolts
twist before drawing tight, the hole shall be carefully reamed and the bolt
replaced with a new one of diameter to fit properly in the hole.
Nuts shall closely fit the bolts so that they can only just be turned by hand.
Bolts shall show two clear threads and shall have one washer under the nuts
unless otherwise specified. The threaded portions of the bolts shall not bear upon
the thickness of the metals connected. SS
1.12 Flame Cutting
The flame cutting procedure shall be carried out to the satisfaction of the
Architect. The edges resulting from manual flame cutting shall be smoothed with
special care. All the re-entrant corners shall b filleted to a radius of at
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least 20 mm. The cut lines shall not extend beyond the fillet and all cuttings shall
follow closely the lines prescribed. No site flame cutting shall be done without
the permission of the Architect.
1.13 Fitted Stiffeners
Stiffening angles or plates to brackets, flanges, etc., shall be accurately ground
to fit the profile of the stiffened member.
1.14 Welding
Welding and welded work shall conform to the requirements of BS 5135: 1974
“specification for metal Arc Welding of Carbon and Carbon Manganese Steels”
unless otherwise specified.
Surfaces to be welded shall be smooth, uniform and free from fins, tears and other
defects which would adversely affect the quality of the weld. Surfaces to be
welded shall also be free from loose scale, slag, rust, grease or other materials that
will prevent proper welding, Mill scale that withstands vigorous wire brushing
may remain.
Welds shall not be in excess of those specified by design requirements and shop
drawings nor shall their location be changed without approval of the Architect.
The Contractor shall before commencement of the fabrication, submit to the
Architect for his approval a list of qualified welders who shall carry out welding
operations and shall certify that such welders have been doing satisfactory
welding or similar structural work for at least 6 months immediately prior to the
subject work. When required by the Architect, the tests as laid down in the BS
4871 specification shall be carried out. The test specimen shall be supplied and
forwarded free of charge and all testing shall be paid for by the Contractor.
If in the opinion of the Architect, the microscopic inspection is not sufficient
to establish the quality of the fully penetrated butt-welds, the contractor shall
provide for such welds to be inspected by x-ray, Ultrasonic or any other
method as directed by the Architect. Any such inspections shall be paid for by
the Contractor. SS
Any weld or member showing defective and sub-standard workmanship shall be
rejected.
The parts to be joined by fillet welds shall be brought into as close contact as
practicable and in no event shall be separated more than 2 mm. If the
separation is greater than 2 mm, the leg of the fillet weld shall be increased by
the amount of separation.
The fit of joints which are not sealed by welds through-out their length shall
be sufficiently close to exclude water after painting.
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Abutting parts to be joined by butt welds shall be carefully aligned.
Measurement of offset shall be based upon centre line of parts unless
otherwise shown on the drawings. Unless otherwise described, all butt welds
shall be fully penetrated butt welds made fusion faces.
The general welding program me for shop and site welding including particulars
of the preparation of fusions faces, the methods of making the welds and
the types of electrodes shall be submitted to the Architect for his approval
before commencement of the work.
Members to be welded shall be brought into correct alignment and held firmly
in position by bolts, clamps, struts or by tack- welds until welding has been
completed. The use of jigs is preferable and adequate allowance shall be made
for warp age and shrinkage. Tack-welds that are to be incorporated in the final
welds shall be subject to the same quality requirements as the final welds.
Such tack-welds shall be as small as practicable and shall be cleaned and fused
thoroughly with the final weld.
Defective, cracked and broken tack-welds shall be removed before final welding.
Welding shall be carried out only under the direction and supervision of an
experienced, competent and qualified supervisor. Unless otherwise agreed by the
Architect, a record shall be kept to enable major welds to be identified with
the welders responsible for the work.
Before welding over previously deposited metal the slag shall be removed and
the weld and adjacent base metal shall be brushed clean. This requirement
shall apply
not only to successive layers but also to successive beads and to the crater
areas when welding are resumed after any interruption.
All butt-welds, except when produced with the aid of backing-plates, shall
have the root of the initial weld gouged, chipped or otherwise removed to sound
metal before welding is stated from the other side. Butt-welds made with the
use of backing-plates of the same material as the base metal shall have the
weld metal thoroughly fused with the backing. SS
Butt-welds shall be extended beyond the edges of the parts to be joined by means
of extensions providing a similar joint preparation and having a width not less
than 30 mm.
Each weld pass shall be terminated at least 20 mm from the edge of the parts
to be joined. Extensions shall be removed upon completion and cooling the weld
and the ends of the weld shall be made smooth and flush with the edges of the
abutting parts.
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Neither the depth of fusion nor the total width of fusion at any point in a single
weld or weld pass shall exceed the width of the face of the weld or pass.
The welding current, the arc voltage, the speed of travel shall be such that each
pass shall have complete fusion to adjacent base metal and weld metal and that
there will be no overlap of undue undercutting.
When welding current, arc, voltage, speed of travel and type of electrode to be
used are established by a test, they shall be kept within the following limits of
- Welding current + or – 10%
- Arc Voltage + or - 7%
- Speed of travel + or - 10%
1.15 Correction in Welding
In lieu of the rejection of an entire piece of member containing welding which
is unsatisfactory or indicates inferior workmanship, the Architect may permit
the Contractor to apply the corrective measures, and such approval shall be
entirely at the Architect’s discretion.
1.16 Cambering
Each truss shall be cambered according to requirement. A camber diagram
shall be submitted to the Architect showing the camber at each panel point for
each truss taken from actual measurement while the truss is assembled.
1.17 Preparation of surface to receive paint
Surfaces of metal to be painted shall be thoroughly cleaned by removing rust,
loose mill scale, welding slag, dirt, oil, grease and other foreign substances.
Any of the following methods may be employed.
- Solvent cleaning ( Method A)
- Power tool cleaning (Method B) SS
- Blast cleaning to BS 4232 (Method C)
- Hand tool cleaning ( Method D)
The blast cleaned surface shall be examined for any traces of oil, grease or
smudges deposited in the cleaning operation. If present, they shall be removed
with white spirit or other solvent.
Cleaned metal surfaces shall be protected within the following periods:-
- Method A and D – 6 hrs
- Method B and C – 4 hrs
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A sample of steel panel measuring not less than 150 x 150 x 6 mm, cleaned using
any of the specified cleaning methods approved by the Architect, shall be
adequately protected by sealed clean polythene wrapping and submitted to the
Architect for his approval before any work is put in hand. The approved sample
shall then be retained by the Architect’s inspectors for comparison with the
prepared steelwork.
Paint shall not be applied in fog, mist or rain, or when the relative humidity
exceeds 85%. Paint shall not be applied to wet or damp surfaces.
No thinner shall be added to the paint unless necessary for proper application.
The type of thinner shall comply with the paint specifications.
When the use of thinner is permissible, thinner shall be added to the paint during
the mixing process. Painters shall not add thinner to paint after it has been
thinned to the correct consistency.
All thinning shall only be done by the painting supervisor who shall be well
acquainted with the paint specifications and with the paint application.
Painted steel shall not be handled until the paint has dried-out except for
necessary handling in turning for painting or stacking for drying. Paint which
is damaged in handling, storing. Loading and off-loading, transport and erection
shall be scraped off to bare metal with sand paper and touched up with the
same kind of paint as was previously applied to the steel, by at least
50 mm all round the affected parts.
1.18 Assembly and Erection
Prior to erection, the Contractor shall check all levels, alignments and
positions of the concrete bases and anchoring holes and bolts. Prior to the
dispatch of any steel work to site, advice notes shall be sent to the Architect.
The Contractor shall provide the false work and all tools, machinery and
appliances necessary to complete the structure as required by the Contract and
in accordance with the drawings, specification and time schedule. SS
Anchor bolts, plates, etc., to be built into the foundations shall be fabricated
and delivered to site sufficiently in advance of the other steelwork to enable
the Contactor to build these items into the works in accordance with schedule of
the works.
Materials to be stored at site shall be placed on skids above the ground and
shall be kept clean. Long members shall be supported on skids placed near
enough together to prevent injury from deflection.
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The parts shall be carefully and accurately assembled as shown on drawings and
any match-marks shall be followed. The materials shall be carefully handled so
that no parts will be bent, broken or otherwise damaged. Hammering which will
injure or distort the members shall not be done. Bearing surfaces and surfaces
to be in permanent contact shall be cleaned before the members are assembled.
The straightening of plates and angles or other shapes shall be done by
methods not likely to produce fracture or other injury. The metal shall not be
heated unless permitted by the Architect, in which case the heating shall not be
to a higher temperature than that producing a “dark cherry red” colour. After
heating the metal shall be cooled as slowly as possible and the surface of the
metal shall be carefully inspected for evidence of fracture.
Before starting the work of erection, the Contractor shall inform the Architect
fully as to the method of erection he proposes to use which shall all be subject
to the approval of the Architect. Such approval shall not be considered as
relieving the Contractor of the responsibility for the safety of his method or
equipment or from carrying out the works in full accordance with the
drawings, specifications and time schedule.
The Contractor shall agree with the Architect the sequence of assembly and
erection of the steelwork in order that this may conform to the program me of
other constructural operations. No work shall be done until such approval by the
Architect has been obtained.
Bolted site joints shall not be finally tightened until the structure is properly
plumbed, leveled and aligned. No straining into position after bolts have been
finally tightened shall be allowed.
Immediately after final tightening of all bolted connections all anchor holes
and column bases shall be grouted to the satisfaction of the Architect.
1.19 Measurement
The weight of steel to be paid for shall be the weight of steel in the completed
and accepted structure. SS
If the Contractor chooses to substitute, with the approval of the Architect an
alternative steel section to that specified in the Contract drawings, then any
resulting increase in weight over and above that indicated in the Contract
Drawings shall be paid for by the Contractor.
For the purpose of measurement for payment, steel, plates, bolts (including
anchor bolts), nuts, weld metal and other similar items shall be considered as
structural steel. Such items shall be considered as structural steelwork and
shall be decided by the Architect whose decision shall be final.
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Unless otherwise specified the weight of steel paid for shall be computed and
based upon a material density of 7850 (seven thousand eight hundred and
fifty) kilograms per cubic meter.
The weight of steel shapes and plates will be computed on the basis of their
nominal weights and dimensions as shown on the approved shop drawings,
deducting for copes, cuts and open holes, exclusive of bolt holes.
The weight of erection bolts other than those specified in the Contract Drawings,
shop field paint, galvanizing, and temporary supporting members shall be
excluded from payment.
The weight of shop and fillet shall be assumed as follows:-
Size of weld Kilograms/ Meter
6 mm 0.298
8 mm 0.372
9.5 mm 0.521
The weight of other welds shall be computed on the basis of the theoretical
volume from dimensions of the welds, with an addition of 50 per cent of the
weight as an allowance for overrun.]
The quantities of other contract items which enter into the completed and
accepted structure shall be measured for payment in the manner prescribed by
the Architect.
1.20 Holding down Bolts
Holding down bolts shall be set in sleeves of steel tubes or similar approved and
provided with steel washer plate cast in the concrete and standard nut and
washer.
1.21 Special Prime Painting
All steelwork where indicated on the drawings shall be shop primed with one
coat epoxy coal Tar paint which dries by chemical curing. The paint shall be
applied in accordance with the manufacturer’s instructions. SS
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PART 2
METAL WORK
MATERIALS
2.1 Generally
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All materials shall be the best of their respective kinds free from defects and
all work is to be carried out in the most workmanlike manner and strictly as
directed by the Architect. The materials in all stages of transportation,
handling and stacking shall be kept clean and prevented from injury by
breaking, bending or distortion and weather action.
2.2 Mild Steel
Mild steel shall comply with BS 15
2.3 Hollow-section- tubing
Square and rectangular hollow section tubing shall be hot rolled mild steel in
accordance with grade 43c of BS 4360.
2.4 Bolts, nuts and washers
These shall be fabricated from materials which comply with BS 15 and each
manufactured item shall comply with the appropriate BS
2.5 Galvanized sheet steel
To be no. 24 S.W.G. of approved manufacture to BS 2989 of best quality mild
steel sheets cold rolled close annealed patent flattened and hot dip galvanized.
2.6 Aluminum
Aluminum shall be extruded sections with an anodized finish, either natural or
coloured, to give a 25 micron minimum depth to European norm EWAA.
The Contractor shall submit with each item or batch of items delivered, test
certificates or such other documentary evidence as the Architect shall require
that the depth of anodizing specified has been achieved. SS
2.7 Stainless Steel
Stainless tube shall be Austenitic steel BS 3014 comparable to BS 1449type
316 S 16
WORKMANSHIP
2.8 Welding
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All welding is to be in accordance with the requirements of BS 1856 and 938
and the electrodes shall comply with BS 639.
Fusion faces shall be free from irregularities which could interfere with the
welding materials. These faces shall also be free from any deleterious material
such as rust, grease, and paint.
All welds shall be of specified finished sizes and the sequence of the welding
shall be carried out in a manner that will give minimum distortion to the
welded parts.
Edges of welding shall be prepared by planning or machine flame cutting.
During welding all parts will be maintained in their correct position.
Welds shall be carried out with each run closely following the one prior with
sufficient time between to allow for removal of slag.
Each run of weld is to be inspected and the sub-contractor shall ensure that
unsatisfactory welds are cut out or remade to the required standards.
The minimum size of fillet weld shall be 6mm.
All completed welds shall have a regular and smooth surface .The weld material
shall be solid with complete fusion throughout the weld and to the fare cut
metals.
Any defects shall be cut out or made good to approval.
External faces of butt welds to be ground smooth. SS
2.9 Painting
All steel is to be wire brushed and any loose scale; dirt or grease shall be removed
before any painting is commenced. One coat of red oxide primer Type A to BS
2523 shall be applied at the shop.
Any damage to the priming paint shall be made good to the Architect’s
satisfaction.
2.10 Fixing of steel windows
fixing of metal windows shall include for assembling and fixing, including
screwing to sub-frames or cutting mortises for lugs in concrete or walling and
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running with cement mortar (1:4) bedding frames in similar mortar, pointing in
mastic, bedding sills, transoms and mullions in mastic, making good finishing
around both sides and fixing, oiling and adjusting all fittings and frames.
END SECTION 2 SS
1. SPECIFICATIONS
1.1. CONCRETE WORK (section 3)
1.1.1. General
The standards of materials and workmanship shall not be inferior to the
recommendations of the current British Standard Code of Practice CP 110.
The requirements outlined in the above Code of Practice must be read with
those of this section of the Specification and where any conflict exists the
requirements of this Specification shall prevail.
As and when required by the Consulting Engineers the Contractor shall
prepare and submit, before commencing the work, a time-chart (additional to
the general programme) detailing the various operations for concrete work.
No material shall be used in the works until prior approval for its use has been
given by the Consulting Engineers, neither shall any change in the nature, quality,
kind, type, source of supply or manufacture be amended without the Consulting
Engineer’s permission.
The cost of providing samples and the cost of carrying out tests together with
the cost of supplying equipment for sampling and site testing shall be borne by
the Contractor.
1.1.2. Concrete Requirements:
The mix proportions shall be selected to ensure that the workability of the
fresh concrete is suitable for conditions of handling and placing having regard
to the structural element being constructed, the disposition of reinforcement,
the climatic conditions prevailing and other limitations.
The basis for assessing strength of concrete shall be he characteristic strength,
defined as the strength of the concrete at 28 day, as determined by the standard
method of testing.
The relationship between the class of the concrete and the characteristic
strength shall be shown as on the table below:-
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Class of Concrete
Characteristic Strength (N/mm3)
28-day 7-day
30 or 30 (s) 25 or 25 (s)
20 or 20 (s)
15 or 15 (s)
10 or 10 (s)
30 25
20
15
10
0.67 times the corresponding 28-day characteristic
strength
Structural concrete proportions shall be determined by an approved mix design method SP 1.
1.1.3. Nominal Mixes
Nominal mix proportioning will be applicable to non-structural concrete.
However, for small sections of work, the Consulting Engineers may give
permission for nominal mix proportioning to be sued.
The Nominal Mix proportions shall conform to the requirements of the table
below:
Class of Concrete Nominal Mix
30 or 30 (s) 25 or 25 (s)
20 or 20 (s)
15 or 15 (s)
10 or 10 (s)
1:1:2 1;1 1/2::3
1:2:4
1:3:6
1:4:8
1.1.4. Quality Control
The principal basis of control shall be by comparison of the results of the
compression cube tests at 28 days, except for small quantities of concrete
whose strength can be otherwise derived which is permitted for use by he
Consulting Engineers.
Where materials are of an unfamiliar grading or type, compression tests shall
be carried out at 7 days and adjustment made in advance of the main control
methods outlined above.
Aggregate and cement and cement shall be proportioned by weigh-batching
and water shall be proportioned by volume.
Subject to the prior approval of the Consulting Engineers volume-batching of
aggregates may be used for small sections of work, but volume-batching of
cement will in no case be accepted. The Contractor may, however, so
proportion the mix that each batch shall use a whole bag or bags of cement,
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the weight of which is known precisely. Where permission has been given for
volume-batching of aggregates, all gauge boxes shall be accurate and strongly
constructed and due allowance shall be made for bulking of the aggregates in
assessing the correct volume to be used.
The aggregates and the cement shall be thoroughly mixed in a clean
mechanical mixer and then water added on the basis of the approved design.
The amount of water added shall conform to the requirements of these
specifications. SP2.
1.1.5. Materials
a) Cement
Ordinary and rapid-hardening Portland Cement shall comply with B.S. 12.
No extra payment will be made to the contractor if on his own initiative he
uses rapid-hardening Portland Cement.
Cement shall be fresh delivered to site and the consignments shall be used in
the order of delivery. The contractor shall mark the date of delivery on each
consignment and each consignment shall be stored separately and in such
manner as to be easily accessible and identifiable.
b) Aggregates
Fine and coarse aggregates shall conform to the requirements of B.S. 882 and
shall be chemically inert to alkali reaction.
Aggregates of rounded shape or otherwise capable of producing a concrete of
good workability with the minimum addition of water shall be preferred.
The Contractor shall ensure that the nature and grading of aggregate remain
reasonably consistent, and shall, if necessary, stockpile and include different
gradings to ensure that the overall gradings remain constant for each section of
the work.
c) Water
The Contractor shall supply all water, make all arrangements and pay all charges
in respect of such supply. Where water can be obtained from a public water
supply it shall be used.
d) Reinforcing Steel
Steel or reinforcing concrete shall be any of the following:-
Plain round mild steel or high yield steel bards conforming to B.S. 4449.
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Cold worked steel bards conforming to B.S. 4461 or
Fabric reinforcement conforming to B.S. 4483.
The steel shall be stored on site under cover and supported clear of the ground
and in such manner as to make identification easy. Supports shall be such that
distorting of the steel is avoidable and contamination and corrosion prevented.
The Contractor shall provide on site facilities for cutting and bending steel
whether he is ordering his steel bent or not and shall ensure that a token
amount of straight bar is available on site for bending as and when directed by
the Consulting Engineer. SP3
A lap of not less than 40 diameters of the smaller bar shall be provided at the
junction of two bars for which the lap is not specifically detailed on the
Drawings.
Unless permitted by the Consulting Engineers, welding of bars at intersections
or for the joining of bars will not be allowed. Where permission is granted,
welding shall be carried out in accordance with the recommendations of the
Institute of Welding for the welding of steel bars for reinforced concrete
construction.
e) Shuttering
The term “Shuttering” shall be taken to include centering, formwork, strutting,
bracing and the like.
Shuttering shall be of such accuracy, strength and rigidity as to carry the
weight and pressure from the concrete to be placed on or against it, together
with all construction, wind or other loads likely to be imparted to it, without
producing deformation of the finished concrete.
All shuttering shall be sufficiently tight, without plugging, to present loss of
grout during the vibration of the concrete.
f) Concreting
The finished concrete shall be dense, durable, impervious to the ingress of
water, free from cracks and honeycombing, resistant to wear and mild
chemical attack.
Concrete shall be placed within 30 minutes of mixing, to uniform level, in
layers not exceeding 50 cm deep in such manner as to avoid segregation, and
each layer shall be compacted by means of approved vibrators to form a dense
material free from honeycombing and other blemishes. Compaction by hand
may be used only with the prior approval of the Consulting Engineers.
Concreting shall not be permitted if its temperature at placing is in excess of
38oC. In order to maintain the temperature of the concrete below this, all
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precautions shall be taken wholly or in part as instructed by the Consulting
Engineers.
In order to reduce premature drying of the concrete during transportation and
piling, all shuttering and reinforcement shall be cooled by watering when
possible, or shall otherwise be protected from the direct rays of the sun. Any
water so used shall be removed placing concrete.
After the specified days, the shuttering shall be struck and surface of the
concrete shall be kept moist for a minimum period of 4 days by mist spraying
or, when permitted by the Consulting Engineers, by covering with wetted
hessian or sand or by treatment with an approved curing membrane. SP4
Where drying winds are encountered, windshields shall be positioned as
directed by the Consulting Engineers to protect exposed surfaces of the curing
concrete.
Concreting during periods of constant rain shall not be permitted unless
aggregate stockpiles, mixers and transporting equipment, and the areas to be
concreted are adequately covered.
During showery weather, the Contractor shall ensure the work can be
concluded at short notice by the provision of stop ends. On no account shall
work be terminated before each section, between one stop end and another is
completed. Adequate covering shall be provided to protect newly placed
concrete from the rain.
g) Construction Joints
The position of construction joints, when not shown on the drawings or otherwise
required by this specification shall be decided on site having regard to the plant
and labour made available by the contractor for the manufacture, placing and
compaction of the concrete as well as its curing, the climatic conditions prevailing
at the time of concreting, the nature and size of the shuttering, and the conditions
of operation of the work. The Contractor shall submit his proposals to the
Consulting Engineers for approval before commencing the work.
h) Water stop and Jointing Materials
Water stop and jointing materials shall be obtained from an approved
manufacturer.
Joint filler shall be manufactured of natural bonded cork or other approved
material. Joint filler shall be cut and trimmed accurately in position by means
of an approved adhesive.
Joint sealing compounds shall be approved rubber/bituminous compounds
suitable for joints in horizontal and vertical/sloping concrete surfaces as
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appropriate. Sealing compounds shall be applied strictly in accordance with
the manufacturer’s instructions and shall completely fill the joint recess.
i) Making Good
Honeycombing or damaged surfaces of concrete, which in the opinion of the
Consulting Engineers are not such as to warrant the cutting out and
replacement of the concrete, shall be made good as soon as possible after
removal of the shuttering as follows:-
1:1½ Portland cement and sand mixture shall be worked into the pores over
the whole surface with a fine carborundum float in such a manner that no more
material is left on the concrete face than is necessary to completely fill SP5
the pores and that a uniformly smooth and dense surface of uniform colour is finally
presented.
j) Testing of Concrete
The Contractor shall provide on the site, equipment, staff and labour for
sampling and testing of concrete. He shall carry out all those tests (at such
times and with such frequency) as may be requested by the Consulting
Engineers.
All equipment shall be calibrated and checked from time to time as may be
necessary.
k) Special Concrete
“Wearing Course Concrete”
Wearing course concrete shall form the top layer of the concrete slabs which
will be sued for the storage of heavy materials with sharp edges or where fork
lifts will be sued for loading and off-loading materials.
The concrete shall consist of a 1:1 ½:3 mix of cement/sand/aggregate.
Ordinary Portland cement shall be used unless otherwise specified. The
aggregate shall be of 10 mm nominal size unless otherwise specified.
The materials shall be thoroughly mixed in a clean mechanical mixer. Only
sufficient water will be added to achieve the desired workability.
The concrete shall be placed on a surface which has been prepared as
specified. Where possible, the concrete shall be vibrated by an approved
mechanical vibrator with an appropriately sized poker. Where the layer of the
wearing course concrete is thin, it shall be thoroughly tamped using approved
means to enable the compaction of concrete fully.
2.2. Walling
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2.2.1. Walling Generally
The Contractor shall provide proper setting out rods and set out all work on
same for courses, openings heights, e.t.c. and shall build walls, piers, e.t.c. to
the widths, depths and heights indicated on the drawings.
Concrete blocks shall be thoroughly wet before being laid and shall be kept
wet during that day. Where unfinished work is continued, the completed
walling shall be wetted before laying mortar. SP6
All walls throughout the work shall be carried out evenly in 200 mm courses,
no part being carried up more than 1 m higher at one time than any other part,
and in such cases the jointing wall shall be made in long steps so as to prevent
cracks arising., and all walls shall be levelled round each stage. All faces of
walls to be plastered are to have all the joints raked out as key for plaster.
Alternate courses of walling at all angles and intersections shall be carried
through the full thickness of the adjoining wall. All walling shall be built up
entirely solid in blocks without voids. All perpends, reveals and angles of the
walling shall be built strictly true and square and all walling shall be flushed
up and grouted solid as the work proceeds.
All putlog holes shall not be less than one course deep and carefully filled with
a block cut to fit size of opening with beds and joints filled with mortar well
tamped in after scaffolding is removed and if in fair faced wall to match
facings.
All walling 150 mm thick and under is to be reinforced with one layer of 25
mm x 16 B.W.G. hoop iron built into every second course well lapped at joints
and intersections and carried at least 115 m into abutting walls at junctions.
Where concrete and stone walling are bonded together at intersections or
heading joints the horizontal cement mortar beds shall not exceed 15 mm
thickness and vertical joints are to be staggered.
2.2.2. Cement
All cement used for making mortar shall be Portland cement complying with B.S.
12.
2.2.3. Sand
All sand used for making mortar shall be clean well graded silicone sand of good
sharp quality equal to samples which shall be approved by the Consulting
Engineers. It shall be free from lumps of stone, earth, loam, dust, salt organic
matter and any other deleterious substance, sieved through a fine sieve and
washed if so directed by the Consulting Engineers.
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2.2.4. Lime
Lime for mortar shall be non-hydraulic or semi-hydraulic quick lime or
hydrated lime in accordance with B.S. 890, Class B.
Quick lime shall be run to putty immediately after delivery to site in pit dug on
the site or in approved containers. The water to be first run into the pit or
container and the lime to be added until it is completely submerged and stirred
until all lumps are disintegrated and the resulting mild-lime shall then be run
through a 3 mm square mesh sieve and run into a pit or other container and
kept clean and moist for not less than 4 weeks before use.
Hydrated lime shall be added to water in a clean receptacle thoroughly mixed
to the consistency of thick cream and allowed to stand and be kept clean and
moist for not less than 16 hours before use. SP7
2.2.5. Cement Mortar
The cement mortar (1:3) shall be composed of 42.5 kg of Portland cement to
0.085 cubic metres of sand. The cement mortar (1:6) shall be composed of 42.5
kg of Portland Cement to 0.17 cubic metres of sand measured in specially
prepared gauge boxes and thoroughly mixed in an approved mechanical mixer or
mixed dry on clean and approved mixing platforms with water added afterwards
until all parts are completely incorporated and brought to a proper consistency.
The use or retempering of wholly or partly set mortar will not be allowed.
2.2.6. Gauged Lime Mortar
Gauged lime mortar shall be composed of 2 parts by volume of lime putty to
12 parts by volume of sand measured in specially prepared gauge boxes and
mixed dry on clean and approved mixing platforms with water added until all
parts are thoroughly incorporated and brought to a proper consistency.
The mortar shall be mixed 7 to 10 days before it is required for use and shall
be stacked in a neat heap well smoothed off, covered with wet sacks and
allowed to mature.
Immediately before use 1 part by volume of Portland cement shall be added to
9 parts by volume of lime mortar, the whole being remixed with the addition
of extra water until all parts are completely incorporated and brought to a
proper consistency.
The gauged mortar must be used within 45 minutes of being mixed and the use
or retempering of wholly or partially set mortar will not be al
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2.2.12. Stone Walling
The stone for walling shall be sound hard throughout free from all defects and
shall be obtained from a quarry approved by the Consulting Engineers. Samples
shall be submitted for approval and, if approved, shall be regarded as the standard
for the work generally. All stone rejected by the Consulting Engineers shall be
removed immediately from the site. Stones shall be laid on their natural beds and
properly lapped and bonded and thoroughly wetted SP9 before laying and again
after laying for at least three days. Stones shall be chisel dressed into true
rectangular blocks with each surface even and at right angles to all adjoining
surfaces and shall generally be not less than 390 mm long, 190 mm high and of
the thickness required for the walling to be built. Extra over for fair face shall
mean ‘fine or medium butched chisel dressed’ to an even recessed joint as the
work proceeds. All arrises shall be plumb and square and all joints properly
bonded and true to line. Fine or medium butched chisel dressed walling shall be
in regular courses.
2.2.13. Damp Proof Courses
The damp proof course is to consist of a 25 mm screed of cement and sand (1:2
laid over the area of the walls and finished to a level surface and covered with
and including an approved fibre based bituminous damp proof course weighing
not less than 2.7 kg per square metre and lapped 225 mm at all joints and
intersections. All walls are to be carefully cleaned and wetted before the
screed is laid.
2.2.14. Other Trades
Close co-operation with electrical and plumbing Sub-Contractors must be
maintained from the beginning of the job to avoid chases being cut in hollow
block or 100 mm solid block work or across any fair faced work. If necessary,
conduits should be run down the jambs of the door openings behind the door
frame and taken to the switch position through a horizontal joint in the masonry.
3. SPECIFICATIONS FOR CIVIL WORKS
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PREAMBLES TO BILLS OF QUANTITIES
1. The Contractor is required to check the numbers of the pages and should
any be found to be missing or in duplicate or the figures or writing
indistinct, he must inform the Engineer at once and have the same
rectified. Should the Contractor be in doubt about the precise meaning of any item, word or figure, for any reason whatsoever, he must inform the Engineer in order that the correct meaning may be decided upon before the date for the submission of the
Tender.
2. No liability whatever will be admitted nor claim allowed in respect of
errors in the Contractor’s Tender due to mistakes in the Bills of Quantities
which should have been rectified in the manner descripted above.SP23
3. These Bills are to be read and priced in conjunction with the Conditions of
Contract, the Specifications, the Drawings and Schedules.
4. The Quantities set forth in the Bills of Quantities are believed to be
approximately correct, and to represent substantially the work to be carried
out, and are given for the purpose of enabling the Employer to compare
Tenders on equal basis.
5. The prices and rates inserted in the Bills of Quantities will be used for
valuing the work executed, and the Engineer will re-measure the whole of
the works executed in accordance with this Contract.
6. The prices and rates inserted in the Bills of a Quantities are to be full
inclusive values of the work described under the items, including all costs
and expenses which may be required in and for the construction of the
work described, together with any temporary works and installations
which may be necessary, and all general risks, liabilities and obligations
set forth or implied in the Documents on which the Tender is based.
7. The brief description of the items given in the Bills of Quantities is purely
for the purpose of identification, and in no way modifies or supersedes the
detailed descriptions given in the Conditions of Contract, Drawings,
Standards and Special Specifications. When pricing items, reference is to
be made to the Conditions of Contract, Drawings, and Special
Specifications for the full directions and descriptions of work and
materials.
8. A price or rate is to be inserted in ink against each item in the Bills of
Quantities and schedule of Rates whether quantities are stated or not and if
the Tender includes the cost of a particular item elsewhere in his rates of
prices, he shall insert the word ‘nil’ against both the rate and extension of
that particular item. Should the Tenderer omit to price an item, then it will
be assumed that he has included the cost or the item elsewhere in his rates
or prices.
9. No alterations shall be made to the Bills of Quantities or schedule of rates,
and no extra item shall be inserted. The Tenderer shall satisfy himself that
the Tender Sum arrived at by pricing the quantities and items given is
sufficient compensation for constructing and maintaining the whole of the
works in accordance with these Contract Documents.
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10. The Bills of Quantities have been prepared in accordance with the
Standard Method of Measurement – Institution of Civil Engineers (U.K.),
variations have been made in some cases to sit local practice.
11. All quantities are measured nett (unless otherwise stated) in accordance
with the Drawings and no allowance has been made for cutting or waste.
The tenderer must allow in his rates accordingly.
SP24
12. Where other Contractors engaged by the Employer are working in the
same area, the Contractor shall give way and clearance as required and
shall programme his work to give a minimum of interference to other
Contractors. Under these conditions the Contractor must ensure that such
materials as he is responsible for are kept rigidly separate from that of
other Contractors also employed. The prices and rates given must include for compliance with this requirement.
13. Metrication – all quantities are given in metric dimensions. However,
where the changeover of production sizes has not yet taken place,
theContractor may use equivalent goods manufactured to Imperial
Dimensions at no extra cost to the Employer.
14. The Bills of Quantities must be priced in Kenya Currency, i.e. Shillings
and Cents.
SP25
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15. Definitions of Abbreviations
Abbreviations used in the Bills of Quantities shall be interpreted as follows:-
“B.S” shall mean: the current British Standard published by the
British Standards Institution 2, Park Street, London,
W.1., England.
‘No.” shall mean: Number
“Ditto” shall mean: The whole of the preceeding, description except as
qualified in the section in which it occurs. Where it
occurs in brackets, it shall mean the whole of the
preceeding description which is contained within the
appropriate brackets.
“mm” shall mean: linear millimetre
“m” shall mean: linear metre
“m2” shall mean: square metre
“m3” shall mean: cubic metre
“kg” shall mean: kilogramme
“E.O.” shall mean: extra over
“Avg.” shall mean: average
“dia” shall mean: diameter
“n.e.” shall mean: not exceeding
“max” shall mean: maximum
“min” shall mean: minimum
“L” shall mean: litre
“sq.” shall mean: square
“mg” shall mean: megagramme
“g.s.” shall mean: galvanised steel
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
“uPVC” shall mean: unplasticised Polyvinyl Chloride
“S.W.G.” shall mean: Steel Wire Gauge
“M.S.” shall mean: Mild Steel
“H.Y.” shall mean: High Yield SP26
(End section3)
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
SPECIFICATIONS GENERAL
PART 3 : GENERAL ( section 4)
3.1. Materials Generally
All materials used on the works shall be new and of the qualities and kinds
specified herein and equal to approved samples. Deliveries shall be made
sufficiently in advance to enable samples to be taken and tested if required. No
materials shall be used until approved and all materials which are not approved or
which are damaged, contaminated or have deteriorated in any way or do not
comply in any way with the requirements of this specification shall be rejected
and shall be immediately removed from the site at the Contractor’s expense.
3.2. Materials for which there is a Kenya Bureau of Standards Specification All
materials used in the works for which a Kenya Bureau of Standards specification
has been published shall conform with the latest edition thereof in every way.
The Architect reserves the right to demand that the Contractor shall obtain at his
own expense a certificate in respect of any material to state that is in accordance
with the Kenya Bureau of Standard Specification.
3.3. Materials for which there is no Kenya Bureau of Standards Specification All
materials used in the works for which no Kenya Bureau of Standard Specification
has been published shall conform with the British Standard specification for such
materials. If there are no published standards as specified for any materials, the
quality of such material shall be generally of a standard equal to those for which
there is a Kenya Bureau of Standards or British Standard Specification.
3.4. Alternatives to proprietary brands
Where materials are specified by their proprietary names or where fittings are
specified by catalogue numbers, or descriptions, the Contractor may offer
materials or fittings of alternative manufacture which are of equal quality. Such
alternatives must be approved before being used in the works and the Contractor
shall allow for this, but prior to tendering he may submit to the Architect for
approval the names of any suppliers or manufacturers whose products he intend to
use, together with catalogue numbers and descriptions and/or samples but the
decision of the Architect will be final.
3..5. Samples
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The contractor shall furnish for approval, with reasonable promptness all samples
of materials and workmanship required by the Architect. The Architect shall
check and approve such samples for conformance with the design concept of the
works and for compliance with the information given in the Contract Documents.
The work shall be in accordance with the approved samples.
a) All material samples shall be delivered to the Architects office with all
charges in connection therewith paid by the Contractor.
b) Duplicate final approved samples, in addition to any required for the
Contractors use , shall be furnished to the Architect, one for office use and one
for the site.
c) Samples shall be furnished so as not to delay fabrication, allowing the
Architect
Reasonable time for consideration of the sample submitted.
d) Each sample shall be properly labelled with the name and quality of the
material, manufacturer’s name, name of project, the contractor’s name and the
date of submission and the specification number to which the sample is refers.
3.6 Measuring and Testing Equipment
The contractor shall provide the following equipment for carrying out measuring
and control tests on the site and maintain in full working order:-
a) Straight edges 2 metres and 4 metres long for testing the accuracy of the
finished concrete.
b) A glass graduated cylinder for use in the silt test of organic impurities in the
sand.
c) Slump test apparatus.
d) 150 mm steel cube moulds with base plates and tamping rod to BS 1881.
e) One dumpy or quickset level and staff.
f) Micrometer.
g) Two 30 metre steel tapes.
SPECIFICATIONS ROOFING AND R.W. PIPES
PART 4 – ROOFING
4.1 Cedar shingle roofing
Cedar shingle roofing shall be obtained from an approved supplier through the
approval of the Architect.
Shingles shall be 75 mm wide x 400 mm long x approximately 12mm thick or
other size approved by the Architect. Prior to fixing shingles shall be well soaked
in engine oil to the approval of the Architect.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
Shingles are to be fixed to 38 mm x 25 treated sawn cypress battens with 2 No. 32
m long rust resistant nails 8 hot dipped zinc, copper or aluminium) in each
shingles. Each nail is to be positioned 20 mm from the side edge of the shingle
and 38 mm above the butt line.
Shingles shall have a 5mm space between adjacent shingles and joints in any one
course shall be separated not less than 40 mm from joints in adjacent courses.
Each shingles have an exposure of 125 mm.
4.2 Bituminous felt roofing
MATERIALS
(a) Fibre based bituminous felts shall comply with BS 747 part 2, class 1:
Type of felt Nominal weight/10 m2
1A Saturated bitumen 7 kg
1B Fine sand surfaced bitumen 17 kg
1C Self finished bitumen 13 kg
1D Coarse sand surfaced bitumen 20 kg
1E Mineral surfaced bitumen 36 kg
(b) Asbestos based bitumen felts shall comply with BS 747: Part 2,
Class 2:
Type of felt Nominal weight/10 m2
2A Saturated bitumen 7 kg
2B Fine sand surfaced bitumen 16 kg
2C Self finished bitumen asbestos 13 kg
2E Mineral surfaced bitumen asbestos 36 kg
Unless otherwise specified bituminous felt roofing shall comprise the
following layers:
(a) To main roof areas:
First layer: saturated bitumen asbestos felt Type 2A, partially
bonded.
Second layer: self-finished bitumen felt Type 1C, fully bonded.
Third layer: mineral surfaced bitumen felt to be aluminium Cap
Sheet finish, fully bonded.
(b) To gutters and upstands in felt roofs:
First layer: saturated bitumen asbestos felt Type 2A, fully bonded.
Second layer: self-finished bitumen felt Type 1C, fully bonded.
Third layer: mineral surfaced bitumen felt Type 1E, fully bonded.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
SPECIFICATIONS ROOFING & R.W. PIIPES
LAYING
Bitumen felt roofing work must be carried out by a sub-contractor approved by the
Architect.
Laying of the felt is it be carried out generally in accordance with C.P. 144.101 to the
following minimum falls:
(a) for mineral surfaced felt roofs: 1:30
(b) For protected felt roofs: 1:60
The contractor and sub-contractor shall ensure that the roof screed is laid to the correct
falls before applying the roofing felt.
Before laying coverings the contractor shall ensure that all preceding and preliminary
work, including all pipes and outlets passing through the roof, formation of grooves and
chases, and provision of battens and fillets is complete.
Base sheeting is to be laid on a clean, dry base and before work commences the
contractor shall obtain the roofing sub-contractor’s written agreement that the base is
suitable.
Sheeting shall be laid in the following manner:
(a) Nail underlayer at 75 mm centres at tops of sloping roofs and screeds.
(b) Hot bonding compounds shall be prepared as follows:
i) heat in kettles fitted with a thermometer.
ii) do not heat to more than 220 degrees C.
iii) Lay at 220 degrees C.
(c) Partial bonding of first layer shall be carried out by spot, strip or frame
bonding at centres not exceeding 1800 mm with hot bonding compound to the
approval of the Architect. Fully bond at perimeter of roof for a width of
450 mm, leaving ventilation channels 150 mm wide at approximately
1800 mm centres.
(d) Full bonding of second and subsequent layers shall be carried out by applying
hot bonding compound to the previous layer, lay bitumen felt and apply
pressure to ensure a firm bond. Remove the surplus squeezed-out compound
as the work proceeds. Compound should be applied at a minimum rate of 16 k per 1.0 m2. prevent adhesion of squeezed-out bonding compound to the surface
of mineral-surfaced felt.
(e) Sheets shall be laid in the direction of the roof slope with a 50 mm side and 75
mm end lap.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
(f) up stands must be at least 150 mm high, fully bonded to the structure with top
edge tucked into chase, wedged at 600 mm centres and fully bond to upstand.
End lap shall be 100 mm and sealed with hot bonding compound. Chases shall
be pointed in cement-sand mortar 1:3. (g) Unless otherwise specified eaves shall be formed as follows:
i) nail one edge of 200 mm felt strip at 150 mm centres.
ii) Fold to form welt 50 mm deep and seal with bonding compound.
iii) Fully bond remainder of felt to base and cover with full thickness of
built up finish.
(h) Unless otherwise specified verges shall be formed as follows:-
i) Nail one edge of 250 mm felt strip at 150 mm centres.
ii) Fold to form welt 50 mm deep and seal with bonding compound.
iii) Fully bond remainder of felt to top layer of roofing.
Bituminous felt roofing is to be guaranteed for three years from the end of the
Defects Liability Period, in an approved form approved by the Architect.
4.3. Aluminium Flashings
Aluminium flashings shall be formed out to 22 gauge super purity aluminium
with natural mill finish to BS 1470. where flashings are built into joints or tucked
into grooves the minimum depth is to be 25 mm and they are to be secured by
folded aluminium wedges at 450 mm centres and pointed in cement mortar (1:3).
4.4. Roof Screeds generally
Roof screeds are to be held to a minimum fall and crossfall of 27 mm in 3.0
metres with a minimum thickness of 19 mm at rainwater outlets and are to be
finished to the entire satisfaction of the sub-contractor executing the roofing.
4.5 Cement and sand roof screeds
The roof screeds shall be formed of cement and sand (1:3). The screeds shall be
laid in bays, square where possible, of maximum 10 square metres. Each bay
shall be formed between stop boards of the correct height and cut on each side to
indicate the slope required in the roofing. The screed shall be trowelled with a
wood float to true and accurate falls or crossfalls up to the stop boards. A 10 mm
wide gap shall be left between each screed bay for the full depth of the screed.
The screeds shall be allowed to cure thoroughly to attain maximum shrinkage.
Any cracks which appear due to shrinkage shall be made good.
The gaps between the screed shall be filled as follows:
1. Brush or blow out joints to remove dirt, dust, e.t.c. and prime the sides
of the joints using a piece of sponge or similar dipped in a mixture of
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equal volumes of “Flintkote” Type 1 or Type 3 emulsion and water.
Allow to dry.
2. Fill up joints slightly proud on the surface using a 1:2:3 mastic. This
mastic shall be prepared by mixing one volume of cement with three
volumes of sand, adding a little water to dampen the mix, then adding
two volumes of ”Flintkote” Type 1 or Type 3 emulsion. The mastic is
thoroughly mixed together adding water as necessary until it is a
uniform brown colour, without being too sloppy.
The screed joints shall then be covered with a 200 mm wide strip of
building paper not bonded to the screed joint and well lapped at angles
and junctions before the application of the roof covering.
4.6. Lightweight roof screeds
Lightweight roof screeds shall be composed of bases of cement, sand and pumice
(1;4:8) finished with a 12 mm cement and sand (1:5) topping laid whilst the base
is still green and trowelled smooth to the satisfaction of the Architect.
The screeds are to be laid as described in ‘Cement and Sand Roof Screeds’.
4.7. PVC rainwater pipes
PVC rainwater pipes and fittings are to comply with BS 4576 with rubber ring
seal joints.
Pipes are to be fixed to the structure with PVC holderbats or brackets built-in or
plugged and screwed at maximum 2 metre centres.
Bends, swan necks, discharge chutes and fittings generally are to be fixed where
necessary to facilitate the flow of water.
Rainwater outlets shall be PVC suitable for the roof finish in which they occur
with domical PVC grating.
4.8. Protection
The contractor is to take all necessary precautions to protect the finished work and
must ensure that no damage occurs to the footing until completion of the works.
4.9. Completion of the works
On completion of the works, the contractor shall clear away, ensure rainwater
outlets are clear and generally leave the roof areas in a clean and watertight
condition to the satisfaction of the Architect.
4.10. Specification for Roof sheeting and Vertical Cladding
Roof sheeting and vertical cladding shall be IT5 “Resincot” pre-painted
corrugated Galvanised Sheets Gauge 24 or as specified in BQ as manufactured by
GALSHEET KENYA LIMITED OL KALOU ROAD, INDUSTRIAL AREA,
P.O. BOX 78162 NAIROBI and shall be laid and fixed strictly in accordance with
the manufacturer’s printed instructions. The “Resincot” special finish to the
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
approval of the Consultant being extra over the standard colour range available
from the manufacturer. BQ specification to supercede this section.
The sheets shall be fixed to Steel “Z” purlins or rails or angles using 6 mm
diameter galvanised hook bolts with rubber washers and approved nuts primed
and painted two coats enamel finish. Holes through the sheets shall be drilled
through the ridges of the corrugations and not in the hollows. No damage or
scratched pre-painted sheets will be accepted on site; any such sheets will have to
be replaced at the contractor’s expense.
4.11. Translucent Sheeting to Roof and Vertical Cladding
Translucent sheeting shall be Fiberlite as manufactured by Specialised Mouldings
Limited or Steel Structures Limited or other equal and approved and moulded to
match the IT5 profile of a thickness 0.50 mm.
The translucent sheets for sue on the Boiler House shall be of a specification and
quality able to withstand room temperatures of up to 60 degrees centigrade and
must be accompanied with a guarantee of a minimum 7 years lifespan. The sheets
will be required to have undergone an ultra violet (u.v.) treatment to the approval
of the Resident Engineer. Samples of the translucent sheets for use on the works
shall be submitted for the approval of the Resident Engineer before the works
commence.
4.12. Flushing and Roofing Accessories
All flashings and roofing/cladding accessories shall be to Gauge Galvanised Mild
Steel sheets bent and curved to the required shapes as shown on the drawings and
shall be fixed to timber or steel “z” as previously stated.
All galvanised steel sheets to be wire brushed to remove any loose scale, dirt or
grease, thoroughly cleaned with mordant solution, primed with a yellow coat or
zinc chromate and painted with two coats gloss enamel paint.
4.13. Metal Gutters and Downpipes
All sheet metal gutters and downpipes shall be galvanised pressed steel sheets
gauge 14 of approved manufacture to BS. 2989. The sheets to be cold rolled
close and annealed patent flattened and hot dip galvanised and bent and curved to
the required shapes as shown on the drawings.
The gutters to be reinforced with bracing straps and fixed with metal brackets.
The downpipes to be fixed to steel “Z” purlins on galvanised spacers using metal
straps. The finishes to the gutters and downpipes shall be similar to that specified
for flashings herebefore.
4.14. Joint Fillers and Sealing Compound
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Joint fillers set between the sheet flashings and blockwork or concrete faces shall
be “Flexcell” or other equal and approved.
Joint sealers around metal window frames between flashings and/or metal and for
“Flexcell” fillers shall be expedite sealatic oil based mastic applied strictly in
accordance with the manufacturer’s printed instructions.
PART 5 – FINISHINGS
5.1. Other Specifications
All other specifications of this contract where applicable are deemed to apply
equally to the finishing specifications.
5.2. Samples
The Contractor shall prepare at his own cost sample areas of the paving,
plastering and rendering as directed until the quality, texture and finish required is
obtained and approved by the Architect after which all work executed shall
conform with the respective approved samples.
5.3. Finished thicknesses
The thicknesses of floor finishes quoted in this section of the specification shall
be the minimum requirements.
Suspended floors shall have a constant structural thickness and have level top
surfaces. The finished floor surface will equally have a constant level and any
adjustment needed to achieve this effect with the varying floor finish materials is
to be made in the screeds beneath the same.
Slabs bearing on the ground may be cast to varying levels, and be of constant
thickness with varying formation levels, or have varying formation levels, or have
varying thicknesses at the option of the Contractor. This stipulation in no way
relieves the Contractor of the requirements of the specification for structural
work.
5.4. Materials generally
All materials shall be of high quality, obtained from manufacturer’s to be
approved by the Architect.
Cement, sand and water shall be as described under Concrete Work and
Blockwork.
5.5. Bonding
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Bonding compounds, e.t.c., for use in applying plaster and similar finishes direct
to surfaces without the use of backings or screeds are only to be used if approved
by the Architect and are to be used strictly in accordance with the manufacturer’s
printed instructions.
5.6. Chases, openings and holes
All chases, holes and the like which were to formed in the concrete or walling
shall be cut, and all service pipes shall be fixed and all holes and chases filled
with mortar before paving and plaster work is commenced. In no circumstances
will the Contractor be permitted to cut chases, holes and the like in finished
pavings or plasterwork.
IN-SITU FINISHINGS
5.7. Generally
The term plastering refers to the operation internally and rendering to the same
operation externally but for ease of reference the term plastering has generally
been used in this specification to describe both operations.
5.8. Mixes
The methods of measuring and mixing plaster shall be as laid down under
Concrete Work and the proportions shall be in accordance with the following:-
Item of Work
Mix Minimum Thickness and Finish
Internal Plaster
1 part cement ¼ part lime
4 parts sand
16 mm finish to walls and ceilings. Wood float finish unless otherwise specified
External Render
1 part cement 4 parts sand
12 mm finish in two coats
Tyrolean finish
Ditto 6 mm finished thickness in two coats on 10 mm plastered backing
To obtain greater plasticity a small quantity of lime may be added to the mixes for
external plastering at the Architect’s discretion but in any case this is not to
exceed ¼ part lime to 1 part cement.
With regard to the lime mortars gauged with cement, the addition just before use,
of the cement to small quantities on the lime/sand mix shall preferably take place
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in a mechanical mixer and mixing shall continue for such time as will ensure
uniform distribution of materials and uniform colour and consistency.
It is important to note that the quantity of water used shall be carefully controlled.
Plaster may be mixed either in a mechanical mixing machine or by hand.
Hand mixed plaster shall first be mixed in the dry state being turned over at least
three times. The required amount of water should then be added and the mix
again turned over three times or until such time as the mass is uniform in colour
and homogeneous.
The plaster shall be completely used within thirty minutes of mixing and hardened
plaster shall not be remixed but removed from the site.
5.9. Preparation of surfaces for plaster e.t.c.
Irregularities in the surfaces, to be plastered or rendered shall be filled with
mortar, without lime, twenty four hours before plastering is commenced. Joints in
blockwork, e.t.c, are to be well raked out before plastering to form a good key.
Smooth concrete surfaces to be plastered shall be treated with an approved
proprietary boding agent or hacked to provide an adequate key for the plaster.
Preparation of surfaces for plaster, e.t.c.
All surfaces to be plastered or rendered shall be clean and free from dust, loose
mortar and all traces of salts.
All surfaces shall be thoroughly sprayed with water and all free water allowed to
disappear before plaster is applied.
As far as practical, plastering shall not be commenced until all mechanical and
electrical services, conduits, pipes and fixtures have been installed.
Before plastering is commenced all junctions between differing materials shall be
reinforced. This shall apply where walls join columns and beams, particularly
where flush, and similar situations where cracks are likely to develop and as
directed by the Architect. The reinforcement, shall consist of a strip of galvanised
wire mesh ‘Expamet’ or equal approved 15 cm wide which shall be ;lugged,
nailed or stapled as required at intervals not exceeding 45 mm at both edges. The
surfaces to which such mesh shall be able applied shall be painted with one coat
bituminous paint prior to fixing the mesh.
5.10. Application of plaster and render
After preparation of the surfaces a key coat of cement slurry shall be applied to
the wetted surface to be plastered. When this coat is dry the plaster coat shall be
applied, by means of a trowel, between screeds laid, ruled and plumbed as
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necessary. This coat which shall be to the required thickness shall be allowed to
be hard and then cured as described. Surfaces are to be finished with a wood or
steel float to a smooth flat surface free from all marks.
Tyrolean finish shall be applied with an approved machine to give a finish of even
texture and thickness. The sprayed finish shall be applied in two coats allowing
time for drying between coats.
Application in one continuous operation to build up a thick layer will not be
permitted. The total finished thickness of the two sprayed coats shall not be less
than 6 mm. The sprayed finish shall not be applied until all repairs and making
good to the undercoat are completed. Any plaster which adheres to pipes, doors,
windows and the like shall be carefully removed before it has set. Curing shall
take place after application of the second coat. The ‘pressed’ finish as directed by
the Architect. Where coloured Tyrolean is required this shall be obtained by the
addition to the mix of any approved colour pigment.
All plastering and rendering shall be executed in a neat workmanlike manner. All
faces except circular work shall be true and flat and angles shall be straight and
level or plumb. Plastering shall be neatly made good around pipes or fittings.
Angles shall be rounded to 6 mm radius.
All tools, implements, vessels and surfaces shall be at all times kept scrupulously
clean and strict precautions shall be taken to prevent the plaster or other materials
from being contaminated by pieces of partially set materials which would tend to
retard or accelerate the setting time.
5.11. Curing of Plaster
Each coat of plaster is to be maintained in a moist condition for at least three days
after it has developed enough strength not to be damaged by water.
5.12 Angle beads
Where required by the Architect, salient external angles of plastered walls shall be
protected with galvanised mild steel angle beads complying with BS 1246 Fig. 7
Profile C3.
They shall be securely plugged, nailed or stapled as required at intervals not
exceeding 450 mm at both edges.
5.13. Plaster stops
Where shown on details, plasterwork shall be stopped against “Expamet”
galvanised steel plaster stop, reference 565 which shall be securely nailed to walls
in the positions indicated on the drawings.
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5.14. Cement and screeds
Screeds shall be mixed and formed as described.
5.15. Granolithic paving
The granolithic paving shall be laid by a specialist floor layer and constructed as
follows:-
Curing compounds if specified or approved by the Architect shall be used in strict
accordance with the manufacturer’s instructions.
Surface hardening solutions of sodium silicate if purchased as liquid shall be of the
grade sold for this purpose. Fourteen days after curing the surface shall be sprayed
with three coats of sodium silicate solution and spread evenly with a mop or soft
brush. Unabsorbed silicate left on the surface after the last application is to be
washed off.
Solution is to be 1:4 by volume for first coat, 1:3 for second, 1:2 for third, applied
at 24 hour intervals.
The base concrete structural floor shall be finished with a tamped surface. Shortly
before the granolithic topping is to be laid the surface of the base concrete is to be
thoroughly prepared to provide a good bond. The base concrete shall be hacked
by hand or mechanically so that its laitance is completely removed to expose
clean coarse aggregate. All traces of dust formed as a result of hacking e.t.c. shall
be removed. the base concrete shall be thoroughly wetted prior to paying. Any
excess water shall be removed prior to the grouting.
The prepared surface of the base concrete shall be covered with a grout consisting
of one part cement and one part sand mixed to the consistency of thick cream and
it shall be scrubbed into the surface with a stiff broom.
The granolithic topping shall be mixed in the following proportions by weight:-
1 part cement, 1 part fine aggregate and 2 parts coarse aggregate.
The water content of the granolithic topping shall be kept as low as possible
consistent with obtaining full compaction of the topping with the plant available
in order to avoid segregation of excessive laitance and in no circumstances must
the water/cement ratio exceed 0.42 by weight.
The granolithic topping shall be mixed for a period of not less than 1 ½ minutes
after all the materials have been placed in the mixer drum. No concrete shall be
removed frrm the drum until it is of uniform texture and colour. Unless otherwise
permitted the materials shall be fed into the drum so that some water will enter the
drum before the cement and aggregates. Each batch shall be discharged
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completely before the next batch is introduced. No extra water or other material
shall be added to the mix after it has left the mixer.
If electrical conduit, trunking or any other items are required to be buried within
the granolithic topping and the thickness is reduced at any point the Contractor is
to ensure that steps are taken to eliminate the possibility of cracking in the
granolithic topping by means of galvanised wire mesh reinforcement in the
flooring or other approved method. The extent of buried conduits, e.t.c. should be
ascertained prior to tendering and allowance for complying with this requirement
will be deemed to be included in the rates for granolithic flooring.
The granolithic topping shall be laid in areas not exceeding 14 m2. the length of
any bay should not exceed 1 ½ times the width of that bay. Joints shall be in the
granolithic topping over all joints in the base concrete and over all support in
beams for suspended floors.
Unless otherwise indicated on the drawings all contraction and construction
joints in the granolithic topping shall be simple butt joints without a filler.
The forms shall be fixed rigidly on a firm foundation and supported throughout
their length so that they will not be disturbed by the spreading and compacting of
the concrete. The forms shall be true to line within + or – 3 mm and to level
within + or – 2 mm. The forms shall be set well in advance of laying the topping
and shall be checked for level immediately before concreting starts.
The granolithic topping shall be placed as soon as possible after being mixed in
two courses each 31 mm thick. In no circumstances should the depth of
granolithic spread in one operation be greater than that which can be fully
compacted by the means available. No more than 1 hour should elapse between
placing the courses. The mix proportions and water content of the granolithic
shall be identical in each course.
The lower course must be compacted before the upper course and each course of
topping shall be fully compacted with neither segregation nor excessive laitance.
Particular care shall be taken to ensure full compaction of the concrete should be
placed to an adequate surcharge to ensure full compaction.
After the topping concrete has been placed, levelled and fully compacted it shall
be trowelled at least three times at intervals during the ensuing 6-10 hours so as to
produce a uniform and hard surface with high resistance to abrasion. Under no
circumstances should cement be sprinkled on to the surface and trowelled in to
absorb surplus water.
As soon as the surface has been finished it shall be protected against rapid drying
out by erecting barriers against wind or draughts and against strong sunlight. As
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soon as the concrete has hardened sufficiently to prevent damage to its surface the
floor shall be cured continuously for a minimum of 7 days by any one of the
following means:-
1. By means of wet canvas or straw mats or 50 mm thickness of damp
sand laid on the surface and kept continuously damp and in position for
the full curing period.
2. By means of building paper, plastic or other waterproof sheeting which
shall be kept in close contact with the surface of the concrete. The
covering shall be lapped 75 mm at all joints. The covering shall be
securely held in position for the full curing period.
3. By spraying the surface with an approved proprietary curing medium
not less than one gallon of which shall be applied to every 20 m2 of
surface.
At the end of the curing period the Contractor shall take all precautions required
by the Architect to ensure that the floor will dry out slowly. Under no
circumstances will artificial heating be permitted in the building for a period of at
least six weeks after the topping has been laid and thereafter the temperature shall
not be increased rapidly.
Side forms shall not be removed from freshly placed granolithic until it is at least
12 hours old and then only with the Architect’s approval. Care shall be taken to
avoid damaging the granolithic. If any damage occurs the Contractor will be
responsible for making good to the Architect’s satisfaction.
The floor shall not be subjected to traffic or to working loads until the specified
curing has been completed.
5.16. In-situ terrazzo work
The terrazzo paving and screeds under are to be laid and polished complete by an
approved specialist firm.
Where the screed is to be bonded to the concrete structural sub-floor, the latter
shall be finished with a tamped surface and left clean and free from dust and
grease. Before laying the screed the surface shall be covered with a grout of one
part sand and one part cement brushed in with a stiff broom. The screed is to be
laid before the grout has set.
All screeds under in-situ and precast terrazzo paving are to be aid by the approved
specialist firm. The screeds shall consist of one part ordinary Portland cement to
three parts sharp washed sand. This mix may be varied by agreement on the
responsibility of the approved specialist firm.
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The screed is to be reinforced with 22 gauge galvanised steel wire netting with
mesh not exceeding 1” laid direct on the sub-floor of bays exceeding 1 square
metre.
The screed backing in-situ skirtings is to be such as to adhere firmly to the various
materials on the walls.
The thickness of in-situ terrazzo finishes are minimal and they maybe increased if
the specialist considers it necessary with corresponding reductions to the screed
thicknesses providing the overall thickness of the finished flooring is maintained
and without adjustment to the prices quoted.
The following thicknesses are assumed in measuring the terrazzo:-
Finish Bedding Screed Total
In-situ paving 25 - 40
In-situ margins 25 - 40
In-situ skirtings 8 - 12
If electrical conduit, trunking or other items are required to be buried within the
depth of the screed and flooring and the total thickness is reduced at any point the
flooring specialist is to ensure that steps are taken to eliminate the possibility of
cracking in the screed and consequent damage to floor finish by means of
galvanised wire mesh reinforcement in the screed and flooring or other approved
method. The extent of buried conduit, e.t.c. should be ascertained with this
requirement will be deemed to be included in the rates for terrazzo pavings and
screeds under.
The in-situ terrazzo paving is to be consist of two parts of white marble chippings
to one part of white Portland cement to B.S. 104.
The marble chippings to be fine (graded 3 mm to 6 mm in equal proportions)
rounded granular clean and free from dust and impurities.
In-situ terrazzo paving should be laid on the screed as soon as practicable and not
more than three days after the laying of the screed.
After laying the surfaces are to be kept moist until ready for polishing.
The in-situ terrazzo paving should be laid in panels separated by dividing strips in
the positions shown on the drawings. Dividing strips are to be white plastic the
full depth of the paving and screed and bedded into the screed with the top edges
truly levelled with the finished polished floor level. The thickness of the dividing
strips is to be 5 mm.
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Polishing of in-situ terrazzo paving is to be carried out by a mechanical polisher
with graded abrasives and any necessary water. Making good of any defects
during polishing is to be done with a cement grout matching in colour that is used
in terrazzo paving.
The finish of in-situ terrazzo paving is to be smooth and imperforate and is to be
approved by the Architect.
The terrazzo is to be washed clean on completion and covered with a thick bed of
sawdust or other approved protective layer. This should be maintained and
renewed as necessary and cleared away on completion.
Lay in-situ skirtings to match paving or of approved colour and finish coved at
junction with paving or floor finish to 20 mm radius. Execute all required angles
and stopped or fair returned ends.
Vertical dividing strips to match those used in paving are required at not more
than three feet intervals. A dividing strip is required between paving and skirting
at the commencement of coving.
Facing of dividing strip nearest wall to be 200 mm from face of skirting.
A horizontal dividing strip is required at top of skirting finished flush with wall
finish over.
Where in-situ terrazzo skirtings are required under door frames, e.t.c., a pencil
round junction is to be made with threshold paving in lieu of coving as shown on
drawing.
In-situ margins shall have dividing strips to match those used in pavings. They
shall be positioned at junctions with paving and skirting and transversely at not
more than three feet intervals to continue vertical strip in skirting.
All internal angles and coves are to be rubbed by hand with carborundum block to
be polished finish matching the finish of the paving to the Architect’s approval.
5.17. Surface hardeners
Floor hardeners shall comprise an approved type guaranteed by the makers to
produce a hard dense concerete with high abrasive resistance, impervious to the
penetration of heavy oils, acid or alkali solutions and to be used strictly in
accordance with the maker’s instructions.
The first dressing of sodium silicate for granolithic flooring shall be one part of
sodium silicate to six parts of water by volume.
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Subsequent dressing shall be composed of one part of sodium silicate to four parts
of water by volume, for all surfaces. The two liquids shall be well mixed
together, sprayed over the flooring and spread evenly with a mop or soft brush,
any excess being wiped off and the flooring allowed to dry for at least 24 hours
after each dressing. After final drying, floors shall be washed with clean water.
5.18. Rates of in-situ work
The rates for in-situ work shall include for raking out joints of blockwork or
bonding coat or spraying cement slurry on new concrete surfaces to form key, for
work in narrow widths, small and isolated areas, rounded arrises, fair and
chamfered edges, for making good up to boundaries of other work for making
good and working around pipes, brackets, e.t.c., and for all other incidental
labours.
Rates shall also include for masking before the application of spray finishes
work executed overhead, temporary rules, supports, screeds and templates.
TILES, SLAB AND BLOCK FINISHINGS
5.19. Vinyl Asbestos tiles
Vinyl asbestos floor tiles shall comply with BS 3260 of an approved manufacturer
to patterns as directed by the Architect. Adhesives are to be as recommended by
the manufacturer in writing and approved by the Architect.
The tiles are to be laid and bedded direct in adhesive on to a cement and sand bed
to make up the total paving thickness.
The cement and sand screed is to be finished with a steel trowel to a perfectly
smooth surface before the application of the mastic and tiling.
On completion the vinyl asbestos tiles are to be sealed and polished with wax all
in accordance with the manufacturer’s printed instructions.
5.20. Clay tile paving
Clay tile pavings are to be in 150 mm x 150 mm tiles obtained from an approved
manufacturer, and are to be laid on prepared screeds. The tiles are to be bedded in
cement and sand (1:4) with straight joints in each direction. Upon completion
grout in cement and wash and clean down. Tiles are be cut with an electric tile
cutting saw.
5.21. Glazed wall tiles
Glazed wall tiles shall be in accordance with B.S. 1281 and shall be 108 mm x
108 mm x 6 mm tiles from the standard colour range with cushion edges. Wall
tiling shall be carried out in accordance with C.P. 212 or any other specified size.
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5.22. Precast concrete paving slabs
To be all in accordance with B.S. 368. The slabs are to be of the sizes given
herein and bedded, jointed and pointed in cement lime mortar (1:2:9).
5.23. Rates
The rates for tile, slab and block finishings shall include for rounded edge tiles
and angles, cutting and fitting up to boundaries and around pipes, brackets, e.t.c.
and waste; for work in narrow widths, small and isolated areas and for all other
incidental labours.
PART 6 – GLAZING
MATERIALS
6.1 General
Glass used in glazing for mirrors shall be best quality clear glass free from visible
defects so as to afford uninterrupted vision or reflection as appropriate, and
without obvious distortion.
6.2. Standards
Glass for glazing and mirrors shall be of approved manufacture and is to comply
with B.S. 952 in all respects free from flaws, bubbles, specks and other
imperfections.
6.3. Clear sheet glass e.t.c.
The clear sheet glass shall be ordinary glazing (OG) quality.
6.4 Plate glass
Polished plate and Georgian wired polished plate glass to be selected glazing (SG)
quality.
6.5. Obscured glass
To be of type described and as approved by the Architect.
6.6. Solar glass
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Solar control glass is to be obtained from a manufacturer approved by the
Architect. Details of the characteristic and properties of the glass are to be
provided to the Architect before ordering.
Solar glass is to be of the spectra float type incorporating metallic irons in the
glass with a bronze tinted colour unless otherwise specified thickness of glass is
to be 6 mm.
6.7. Safety glass
Where safety glass is required this shall be Triplex.
6.8. Glazing gaskets
Glazing to metal frames shall be secured with clip-in gasket of butyl rubber. The
gaskets shall be of size and section to suit the frame and glazing so as to provide
a weather and air-tight seal. The mechanical properties of the gasket shall be such
as to resist the climatic conditions experienced in Kenya.
6.9. Washleather
Washleather shall be best quality chamois oil curved natural coloured. Where
washleather is called for an approved substitute may be employed.
6.10. Putty
(a) The putty for glazing to wood sashes is to be linseed oil putty all as
B.S. 544.
(b) The putty for glazing to metal windows is to be gold size metal
window putty specially designed for tropical use, or patent mastic putty if
approved by the Architect.
(c) All putty shall be delivered on site in the original manufacturer’s sealed
cans or drums and used direct therefrom, with the addition only of pure linseed
oil if necessary. No mineral or other oils may be used in the putty except
genuine linseed oil.
6.11. Mirrors
Mirror shall be polished float glass silvering quality, protected at back with
electro-copper backing coated with Shellac varnish and paint. The mirrors are to
be fixed with chromium plated dome headed mirror screws with plastic or rubber
distance pieces and washers unless otherwise stated and rates shall include for
this.
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Glazing of all types and in all locations shall be carefully executed by artisans
skilled in this type of work and in conformance with the recommendations of C.P.
152. glazing shall be carefully fitted so that it is not subject to pressure and
stresses imposed by being an overtight fit within the framing.
6.13. Measurements
Each element (door, window, e.t.c.) to receive glass shall be accurately measured
to ensure a perfect fit subsequently.
6.14. Single glazing
Single glazing shall be executed with glass of the various types descried herein.
Ordinary (non-safety) glass maybe pre-cut or cut on site.
6.15. Wired glass
Wired glass shall be cut so that the wires embedded are truly vertical and
horizontal (i.e. at right angles to the cut edges).
6.16. Safety glass
Safety glass shall be factory cut before delivery to site. Site cutting will not be
permitted.
6.17. Storage and handling
Glass shall be delivered to site in stout containers and clearly marked. The
containers shall incorporate sling attachment points for lifting bridles. Glass shall
be stored under cover so that the panes are truly vertical.
6.18. Protection
After fixing glass shall be boldly marked with paper or whitewash so that is
clearly visible. In positions where damage due to construction traffic or activity is
likely to occur stout screens composed of hardboard or fibreboard on battens shall
be arranged to protect the glass.
6.19. Damage
Should any glass delivered to site be found to be damaged it shall not be
incorporated into the works without the express permission of the Architect.
Should glazing installed be damaged for any reason it shall be removed and
replaced free of charge to the satisfaction of the Architect. Should any adjacent
works be damaged this shall equally be reinstated free of charge to the satisfaction
of the Architect.
6.20. Defective work
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All glass shall be checked before installation to ensure that defective glass is not
installed. Notwithstanding this, if in the opinion of the Architect, any installed
glazing is defective it shall be removed and replaced free of charge to the
satisfaction of the Architect.
6..21. Glazing to wood
Glazing shall be secured to wood framing with hardwood beads. Edges shall be
wrapped in washleather so that the washleather finishes just below the surface of
the bead. No adhesives shall be used.
6.22. Glazing to metal
Glazing shall be secured to metal framing with clip in butyl rubber gaskets.
6.23. Glass thickness
Glass thickness shall conform to the recommendations of C.P. 152 and the
manufacturer’s recommendations for sizes of panes relative to the position in the
building and the effects of wind pressure (both negative and positive).
6.24. Cleaning
All windows glazed panels and mirrors shall be cleaned both inside and out
immediately prior to the handing over of the building to the satisfaction of the
Architect.
SPECIFICATIONS PAINTING AND DECORATION
PART 7
MATERIALS
7.1 Manufacturers
Except where stated all materials shall be obtained from approved manufacturers.
The contractor shall state the name and address of the manufacturer whose
materials be proposed to use. Once approval has bee given the contractor shall not
obtain materials from other sources without the prior written agreement of the
Architect.
7.2 General
Each succeeding coat of priming undercoating and finishing (pigment) or clear
coating shall be sufficiently different in colour as to be readily distinguishable.
All primers and paints in one system upon a particular surface shall be obtained
from the same manufacturer.
The mixing of paints, etc., of different brands before or during application will not
be permitted.
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7.3 Emulsion Paints
Emulsion paints shall be matt or satin finish vinyl emulsion paint.
The first (mist) coat shall be thinned in accordance with the manufacturer’s
instructions
7.4 Gloss Paints
Gloss paints shall be hard gloss finish oil paint.
7.5 Lead based paints
The use lead based paints will not be permitted.
7.6 Clear finishes
Clear finishes internally shall be clear polyurethane varnish (one park).
7.7 Primers and undercoats
Unless otherwise specified, primers and undercoats shall be the type
recommended by the manufacturer of the finishing coats specified for a particular
surface. Primer for external bare metalwork surfaces shall comply with B.S. 2523.
7.8 Knotting
Shellac knotting shall comply with B.S. 1336.
7.9. White spirit
The white spirit shall comply with B.S. 245.
7.10 Timber stain
Timber stain shall be oil based pigmented stain. The application of this material
shall be strictly in accordance with the manufacturers written instructions. Tin and
degree of application shall be to the approval of the architect.
7.11 Stopping
The stopping shall be as follows:-
(a) Plasterwork shall be plaster based filler.
(b) Concrete and brickwork shall be similar material to the background and
finished in a similar texture.
(c) Internal woodwork, plywood and blockboard shall be putty complying with B.S. 544.
(d) External woodwork shall be white lead paste complying with B.S. 2029.
(e) Internal clear wood finishes: the stopping shall be that recommended by the
clear lacquer manufacturer.
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7.12 Fillers
The fillers for internal joinery shall be the type recommended by the paint
manufacturer for use with his type of paint or lacquer.
Stopper and fillers shall be tinted to match the undercoat, and shall be compatible
with both undercoats and primers.
All materials shall be used strictly in accordance with the manufacturer’s
instructions.
7.13 Textured coating
Textured coating is to be of proprietary manufacturer approved by the Architect
of an approved colour.
Technical information concerning the coating is to be submitted to the architect
before ordering, but the minimum qualities of the coating are to be as follows:-
(a) Suitable for application internally and externally to plastered, rendered,
concrete, block, stone, brick, asbestos and timber surfaces.
(b) Minimum durability of 10 years even in expose conditions.
(c) Maintenance free.
(d) Built-in mould resistant fungicide.
WORKMANSHIP
7.14 General
Workmanship generally shall be carried out in accordance with B.S. C.P. 231,
unless otherwise specified.
Before painting is commenced floors shall be swept and washed over: surfaces to
be painted shall be cleaned before applying paint as specified, and all precautions
taken to keep down dust whilst work is in progress.
No paint shall be applied to surfaces structurally or superficially damp and all
surfaces must be ascertained to be free from condensation, efflorescense, etc. ,
before the application of each coat.
No painting shall be carried out externally during humid, rainy, damp, foggy or
freeing conditions, conditions where surfaces have attained excessively high
temperatures or during dust storms.
No new primed or undercoated woodwork and metalwork shall be left in an
exposed or unsuitable situation for un undue period before completing the
process.
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No dilution of paint materials shall be allowed except strictly as detailed by the
manufacturers and own direction, either on the containers, or their literature, and
with the special permission of the Architect. For external work dilution of paints
will not allowed whatsoever. For internal work, where permitted by the
Architect, undercoats may be thinned by the addition of not more than 5%
thinners. Gloss finish shall not be thinned at all.
Metal fittings such as ironmongery etc. , not required to be painted shall first be
fitted and then remove before the preparatory process are commenced. When all
painting is completed the fittings shall be cleaned as necessary and refixed in
position.
7.15 Brushwork
Unless otherwise specified, all primers and paints shall be brush applied; written
permission must be obtained from the Architects if an alternative method of
application is to be used.
7.16 Stopping and filling
Unless otherwise specified by the paint manufacturer all primers and undercoats
shall be stopped flush and rubbed down to a smooth surface with an abrasive
paper and all dust removed before each succeeding coat is applied. Care shall be
taken to prevent burnishing of the surface.
7.17 Stirring
Unless otherwise specified by the paint manufacturer all paint materials shall be
thoroughly mixed and/or stirred before and during use, and suitably strained as and
when necessary.
7.18 Inspection
No priming coats shall be applied until the surfaces have been inspected and the
preparatory work has been approved by the Architect. No undercoats or finishing
coats shall be applied until the previous coat has been similarly inspected and
approved.
7.19 Paint application
Each coat of paint shall be so applied as to produce a film of uniform thickness.
All paint shall be applied in accordance with the manufacturer’s instruction.
Special attention shall be given to ensure that all surfaces including edges, corners,
crevices, welds and rivets receive a film thickness equivalent to that of adjacent
painted surface.
7.20 Drying
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All coats shall be thoroughly dried before succeeding coats are applied. Allow a
minimum of 24 hours between applications on any one surface, unless otherwise
specified by the manufacturer.
7.21 Unprimed woodwork
Unprimed woodwork scheduled to be painted shall be rubbed down with abrasive
paper and dusted off. Care shall be taken to prevent ‘ burnishing’ of the surface.
All knots and resinous areas shall be coated with two coats of knotting. Pitch on
large, open unseasonable knots and all other beads or streaks of pitch shall be
scraped off, or if still soft, shall be removed with the white spirit before applying
the knotting. Apply one coat of priming to all surface, two coats to all grain, to be
subsequently painted. Backs of all wood frames in contact with concrete,
brickwork, blockwork and metalwork or similar materials shall be primed before
fixing. After priming all joints, holes, cracks shall be stopped and filled, rubbed
down and dusted off.
7.22 Primed woodwork
Woodwork delivered primed shall be lightly rubbed down with abrasive paper,
and dusted off. Touch up bare areas with a similar priming including open grained
ends. After touch priming all joints, holes, cracks and open grained ends shall be
stopped and filled, rubbed down and dusted off.
7.23 Plywood and blockboard
Edges of exterior plywood and blockboard shall be sealed with two coats of of
aluminium primer and the backs treated with alead primer.
7.24 Clear finished woodwork
All woodwork scheduled to receive a clear finish shall be well sanded with the
grain removing all dirt etc., to give as smooth a surface as possible. Resinous
timber shall be swabbed down with the white spirit and dried thoroughly. Split or
end grain shall be filled with suitable filler recommended by the clear lacquer
manufacturer, in accordance with their instructions, and of the appropriate shade.
7.25 Bare metalwork
Bare metalwork shall be thoroughly cleaned off all dirt, grease, rust and scale by
means of chipping and wire brushing; particular attention should be given to the
cleaning of welded, brazed and soldered joints. Wash down with white spirit and
wipe dry with clean rags. Apply a coat of metal primer immediately the cleaned
surfaces have been approved by the Architect.
7.26 Galvanized metalwork
Galvanized metalwork scheduled for painting shall be thoroughly cleaned of dirt,
greased, dusted and washed down with white spirit and wiped dry with clean rags.
Any minor areas of rust shall be removed by wire brushing and spot primed with a
zinc rich primer. Apply at least one coat of calcium plumbate primer to all surface
subsequently to be painted.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
7.27 Primed metalwork
If the priming coat of pre-primed metalwork has suffered damage in transit, or
during erection on site, the affected areas shall be cleaned off by wire brushing,
abrading and dusting off, the bared patches touched up with a primer of a similar
type to that already applied.
7.28 Copper
Copper schedule for painting shall be lightly abraded with emery cloth, washed
with white spirit and wiped dry with clean rags. Apply a coat of etch primer
immediately the cleaned surfaces have been approved.
7.29 Brickwork, concrete, e.t.c.
All brickwork, blockwork, concrete, rendered and plaster surfaces scheduled to be
painted shall be brushed down, all holes and cracks filled, all projections such as
plaster or mortar splashed etc., removed to leave suitable dust free surface. All
traces of mould oil shall be removed from concrete surface by scrapping with
water, detergent and rinsing with clean water. All this surfaces shall be thoroughly
dry before any primer or pains are applied. Apply a coat of alkali resisting primer
where surfaces are to be finished with oil paints or alkyd resin type emulsion.
7.30 Colours
The colours will be selected by the Architect from the paint manufacturers
standard colour range.
7.31 Toxic wash
Concrete, blockwork, plaster and timber surfaces which are to be painted shall be
washed down prior to painting with a toxic wash applied by brush or spray. A
second wash shall be applied two days after the first wash. The surfaces shall be
then allowed to dry out completely before application of paint.
7.32 Protection
Proper care must be taken to protect surfaces while still wet by using of screens
and ‘ wet paint’ signs where necessary.
7.33 Damage
Care must be taken when preparing surfaces, or painting etc., not to stain or
damage other work. Dust sheet and covers to the satisfaction of the Architect
shall be used to protect and adjacent work. Any such stains or damage shall be
removed and made good at the contractor’s expense.
7.34 Cleanliness
All the brushes, tools, pails, kettles and equipment shall be clean and free from
foreign matter. They shall be thoroughly cleaned after use and before being
used for different colours, types or classes of material. Painting shall not be
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
carried out of the vicinity of other operations that may cause dust. Waste
liquids, oil soaked rag, etc., shall be removed from the building each day. Waste
liquids shall not be thrown down in any sanitary fittings or drains.
7.35 Performance
If, while the work is in progress, the paint appears to be faulty, such as
consistency of colour, drying time, or quality of finish, the work shall be
stopped at once and the manufacturer consulted.
The manufacturers of the materials shall be given every facility of inspecting
the work during progress in order to ascertain that the materials are being used
in accordance to their directions, and to take samples of their products from
the site if they so desire for tests.
The finishing coats of the various paints or surface finishings shall be free from
sags, brush marks, runs, wrinkling, dust, bare or ‘starved’ patches, variations in
colour and texture , and other blemishes.
When the work has been completed, the finished surfaces shall not be inferior
in quality, colour and finish to the samples approved by the Architect, and
imperfections in manufacture shall not be apparent through these finished
surfaces.
In the event that the Architect is not satisfied that the quality of finish does not
comply with the required standards and/or the sample panel the contractor will
be required to repaint at his own expense, such work to the satisfaction of the
Architect. If in the opinion of the Architect it is necessary to remove
completely the unsatisfactory paintwork this shall also be done under the
direction of the Architect at the expense of the contractor.
7.36 Packaging, delivery and storage
All paints and surface coatings shall be delivered in sound sealed containers,
labelled clearly by the manufacturers, the label or decorated container must
state the following:-
(a) The type of product.
(b) The brand name and colour
(c) The use for which it is intend.
(d) The manufacturers batch number.
(e) The B.S number if applicable.
(f) All labels shall be printed- containers bearing typewritten labels will not be
accepted.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
Materials shall be stored under cover in accordance with manufacturers
instructions, and with local fire and safety regulations. The store itself must
be maintained at a temperature of not less than 50 degrees F (10 degrees C)
and must not be subjected to extreme changes of temperature.
The patch deliveries are to be dated and used strictly in order of delivery.
7.37 Vinyl emulsion paint
Surfaces to be painted shall receive one mist coat followed by two full coats of
vinyl emulsion paint. Application may be by means of rollers or brushes.
7.38 Gloss finish paint
Surfaces to be painted shall be primed then painted with two undercoats followed
by one coat gloss finish paint.
7.39 Clear polyurethane varnish
Surfaces to be clear varnished shall be treated with two coats polyurethane
varnish.
7.40 Textured coating
The manufacturers instructions concerning application of the coating are to be
strictly followed under direction of the Architect.
All surfaces to receive textured coatings are to be clean and dry with surfaces
scraped and brushed before application of the coating.
Application of the coating is to be with textured roller or fibre brush as
directed by the Architect with a minimum spreading capacity of 1 kilogramme
per square metre . Under no circumstances is the coating to be thinned.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
PART II
FINANCIAL BID
(To be enclosed in a separate envelope from the
Technical Bid)
NOTE: All Prices quoted should be inclusive
of VAT.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
APPENDIX “A”
REHABILITATION WORKS OF UHT STORES AT SOSIANI NEW KCC FACTORY
SCHEDULE OF UNIT RATES
Notes:
This schedule of unit rates forms part of the tender
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
It shall be completed fully, in every details, and with reasonable rates. The tenderer may
add any item (s) considered necessary.
The unit rates shall include for supply, insurance, delivery to site, storage, installation,
setting to work, profit and overhead, and any other obligations which may arise during
installation/works.
The schedule of unit rates shall be included in the “tender analysis” and may be the cause
of the exclusion of a tenderer.
No quantities shall be included on the schedule and it will be for the tenderer to estimate,
the amount of work in the project.
The schedule of unit rates detailed will be part of analysis and evaluation of the tenders
regardless of whether the item is related to the actual work or not and thus should be fully
filled.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
APPENDIX ‘B’
SCHEDULE OF DAYWORK RATES
ONLY RATES TO BE INSERTED IN THIS BILL AND SHOULD NOT BE EXTENDED AT ALL
ITEM DESCRIPTION QTY UNIT RATE SHS CTC
LABOUR
Note: The categories listed
1
2
2.1
2.2
2.3
2.4
2.5
are those relating to the
Building & Construction
Industry in Kenya
LABOURERS
GENERAL TRADESMEN
Carpenters
Masons,
Joiners,
Stone Dressers,
Brick Layers,
Plasters,
Electricians,
Decorators,
Metal workers, Terrazzo paviors,
Painters,
Steel fixers,
Asphalters,
Floor layers,
Roofers and Steel Erectors,
Drilling Rig Operations,
Pipe Fitters and plumbers
Tradesmen: Learner Grade
Tradesmen: Ungraded
Tradesman: Grade 111
Tradesman: Grade 11
Tradesman: Grade1
100
20
20
20
20
20
Hour
Hour
Hour
Hour
Hour
Hour
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
ITEM DESCRIPTION QTY UNIT RATE SHS CTS
3
3.1
PLANT OPERATORS
Greasers
20
Hour
-
-
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
3.11
4
4.1
4.2
4.3
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
Plant Attendant: Compressor Driver
Plant : Mixer Driver
Plant : Banksmen
Plant : Hoist
Small pneumatic plant operators
Jackhammer operators
Dumper drivers (2 tonnes & under)
class 1
(Light-traced Tractors D4 etc) class
2
(Light-traced tractors D4 etc)
Heavy plant operators (D7, 995) Tractors, Grader, Excavators
VEHICLE OPERATORS
Turnboy, Greasers & Tyremen
Truck Drivers: under 8 tonne (load)
Truck Drivers under 8 tonne (load)
with or without trailer
PLANT
(Working Time)
Compressors (portable
3.0m3/minutes)
Compressor tool & 15 m Hose.
Pneumatic pick
Agriculture Tactor
Mixer (0.40/0.28m3
Pocker vibrators (petrol)
Dumper (0.38m3)
20
20
20
20
20
20
20
20
20
20
20
20
20
1
1
1
1
1
1
1
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ITEM DESCRIPTION QTY UNIT RATE SHS. CTC
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
5.8
5.9
5.10
5.11
5.12
5.13
5.14
5.15
5.16
5.17
5.18
5.19
5.20
5.21
5.22
5.23
5.24
5.25
5.26
5.27
5.28
5.29
Dumper (0.76m3)
Tractor (30h.p)
Tractor (2 tonne diesel)
Tractor (5 tonne diesel)
Vibrating roller (35 kg. hang guided)
Bulldozer (D4)
Bulldozer (D7)
Motor Grader (3.6 m blade)
6-8 tonne smooth wheeled roller
10-12 tonne smooth wheeled
roller
Excavator (0.38 m3)
Excavator (0.57m3)
Excavator (0.76m3)
Self propelled water tanker
Van (1.5. tonne
Lorry (5 tonne tipper)
Lorry (7 tonne tipper)
Pump (50mm) with hoses
Pump (80) with hoses
Soil compactor (25 kg.)
Oxy-acetylene cutting & welding
set excluding oxygen and
acetylene
Electric welding set excluding
electrodes
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
hour
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ITEM DESCRIPTION QTY UNIT RATE SHS. CTS
6 MATERIALS 1
tonne
-
-
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
6.1
6.2
6.3
6.4
6.5
6.7
6.8
6.9
6.10
6.11
6.12
6.13
6.14
6.15
6.15
6.16
6.17
6.18
6.19
6.20
6.21
6.22
6.23
6.24
6.25
Ordinary Portland cement
Rapid hardening portland cement
Graded coarse aggregate
Graded fine aggregate
Mild steel Round Bar for reinforcement.
Building Sand
Sawn Timber 10 - 30mm thick
Wrought Timber 10 - 30mm thick
Oxygen ( per cylinder)
Acetylene (per cylinder)
Welding Eletrodes (per 5kg packet)
Free Draining fill size 75 mm – 25mm
Graded Gravel size 20 mm – 5mm
Hardcore
Rock pitching
Murram alternative to 9.62
115 x51 Z-purlins Z53
80 x 80 x3mm RHS
75 x75 x6mm Angle
50 x 50 x 6 mm Angle
25 x 50 x 4 mm Angle
200mm thick hard natural stones
150mm thick hard natural stones
200mm thick hard machine cut stones
150mm thick hard machine cut stones.
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
tonne
m3
m3
tonne
m3
m3
tonne
No.
No.
No.
m3
m3
m3
m3
m3
Lm
Lm
Lm
Lm
Lm
SM
SM
SM
SM
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
APPENDIX ‘C’
ELECTRICAL INSTALLATION
ITEM DESCRIPTION QTY UNIT RATE SHS. CTS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Installation in Buildings Cables from East Africa cables and
fitting England or equal and approved.
Provide and fix complete one gang one
way switch and cabling as per the
specifications.
Ditto two gang one way.
Ditto three gang one way
Provide and fix complete on gang two
way switch and cabling as per
specifications.
Provide and fix complete telephone
outlet and cabling as per specifications.
Provide and fix complete a suitable
main Distribution Board equipment for
the stores.
Provide and install as necessary earthing
electrode as per specifications.
Provide and install complete Lightning
arrestors suitable for project.
Provide and install complete the
following:-
35mm2 4 core cable
25mm2 4 core cable
16mm2 4 core cable
10mm2 4 core cable
16mm2 single core cable
10mm2 single core cables
32mm dia. Steel conduit
25mm dia. Steel conduit
20mm dia. Steel conduit
32mm dia upvc conduit
25mm dia. Upvc conduit
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
NO
No
No
No
NO
NO
NO
No
M
M
M
M
M
M
M
M
M
M
M
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
ITEM DESCRIPTION QTY UNIT RATE SHS. CTS
20
21
22
23
24
25
26
27
28
29
30
31
32
20 mm dia upvc conduit
Provide and install complete the
following:-
5ft. fluorescent fittings (f.f.)
with metal louvers for the and
including the 2 x 40 w lamps
5 ft. f.f. for and including the 2
x 40w lamps with metal louvers
for the reflectors.
5 ft. f.f. for and including the 2
x 65w lamp bare batten.
5 ft. waterproof f.f for and
including the 2 x 40w lamps
with unbreakable polyester on
top and clear plexiglass below
5 ft., 2 x 4ow lamp with metal
reflectors and white lamellas.
2x 80w fluorescent bulk head
fittings
1 x 100w pendant lamp fittings.
13A fused two gang socket
outlet and cabling
Ditto one gang ditto
1.5mm2 single cable.
2.5mm2 single cable
4.0mm2 single cable
1
1
1
1
1
1
1
1
1
1
1
1
1
M
NO
NO
NO
NO
NO
NO
NO
NO
NO
M
M
M
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
INSTRUCTIONS TO TENDERERS.
1. General/Eligibility/Qualifications/Joint venture/Cost of tendering
1.1 The Employer as defined in the Appendix to Conditions of Contract
invites tenders for Works Contract as described in the tender documents.
The successful tenderer will be expected to complete the Works by the
Intended Completion Date specified in the tender documents.
1.2 All tenderers shall provide the Qualification Information, a statement that
the tenderer (including all members of a joint venture and subcontractors)
is not associated, or has not been associated in the past, directly or indirectly,
with the Consultant or any other entity that has prepared the design,
specifications, and other documents for the project or being proposed as
Project Manager for the Contract. A firm that has been engaged by the
Employer to provide consulting services for the preparation or
supervision of the Works, and any of its affiliates, shall not be eligible to
tender.
1.3 All tenderers shall provide in the Form of Tender and Qualification
Information, a preliminary description of the proposed work method and
schedule, including drawings and charts, as necessary.
1.4 In the event that pre-qualification of potential tenderers has been
undertaken, only tenders from pre-qualified tenderers will be considered
for award of Contract. These qualified tenderers should submit with their
tenders any information updating their original pre-qualification
applications or, alternatively, confirm in their tenders that the originally
submitted pre-qualification information remains essentially correct as of
the date of tender submission.
1.5 Where no pre-qualification of potential tenderers has been done, all
tenderers shall include the following information and documents with their
tenders , unless otherwise stated:
(a) copies of original documents defining the constitution or legal
status, place of registration, and principal place of business; written
power of attorney of the signatory of the tender to commit the
tenderer:
(b) total monetary value of construction work performed for each of
the last five years:
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
(c) experience in works of a similar nature and size for each of the last
five years, and details of work under way or contractually
committed; and names and addresses of clients who may be
contacted for further information on these contracts;
(d) Major items of construction equipment proposed to carry out the
Contract and an undertaking that they will be available for the
Contract.
(e) Qualifications and experience of key site management and
technical personnel proposed for the Contract and an undertaking
that they shall be available for the Contract.
(f) reports on the financial standing of the tenderer, such as profit and
loss statements and auditor’s reports for the past five years;
(g) evidence of adequacy of working capital for this Contract (access
to line(s) of credit and availability of other financial resources);
(h) authority to seek references from the tenderer’s bankers;
(i) information regarding any litigation, current or during the last five
years, in which the tenderer is involved, the parties concerned and
disputed amount; and
(j) Proposals for subcontracting components of the Works amounting
to more than 10 percent of the Contract Price.
1.6 Tenders submitted by a joint venture of two or more firms as partners shall
comply with the following requirements, unless otherwise stated:
(a) the tender shall include all the information listed in clause 1.5
Above for each joint venture partner;
(b) the tender shall be signed so as to be legally binding on all
partners;
(c) all partners shall be jointly and severally liable for the execution
of the Contract in accordance with the Contract terms;
(d) one of the partners will be nominated as being in charge,
authorised to incur liabilities, and receive instructions for and on
behalf of all partners of the joint venture; and
(e) the execution of the entire Contract, including payment, shall be
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
done exclusively with the partner in charge.
1.7 To qualify for award of the Contract, tenderers shall meet the following
minimum qualifying criteria;
(a) annual volume of construction work of at least 2.5 times the estimated
annual cashflow for the Contract;
(b) experience as main contractor in the construction of at least
(c) two works of a nature and complexity equivalent to the Works
over the last 10 years (to comply with this requirement, works cited
should be at least 70 percent complete);
(d) proposals for the timely acquisition (own, lease, hire, etc.) of the
essential equipment listed as required for the Works;
(e) a Contract manager with at least five years’ experience in works of an
equivalent nature and volume, including no less than three years as
Manager; and
(f) liquid assets and/or credit facilities, net of other contractual
commitments and exclusive of any advance payments which may be
made under the Contract, of no less than 4 months of the estimated
payment flow under this Contract.
1.8 The figures for each of the partners of a joint venture shall be added
together to determine the tenderer’s compliance with the minimum
qualifying criteria of clause 1.7 (a) and (e); however, for a joint venture to
qualify, each of its partners must meet at least 25 percent of minimum
criteria 1.7 (a), (b) and (e) for an individual tenderer, and the partner in
charge at least 40 percent of those minimum criteria. Failure to comply
with this requirement will result in rejection of the joint venture’s tender.
Subcontractors’ experience and resources will not be taken into account in
determining the tenderer’s compliance with the qualifying criteria, unless
otherwise stated.
1.9 Each tenderer shall submit only one tender, either individually or as a
partner in a joint venture. A tenderer who submits or participates in more
than one tender (other than as a subcontractor or in cases of alternatives
that have been permitted or requested) will cause all the proposals with the
tenderer’s participation to be disqualified.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
1.10 The tenderer shall bear all costs associated with the preparation and
submission of his tender, and the Employer will in no case be responsible or
liable for those costs.
1.11 The tenderer, at the tenderer’s own responsibility and risk, is encouraged
to visit and examine the Site of the Works and its surroundings, and obtain
all information that may be necessary for preparing the tender and entering
into a contract for construction of the Works. The costs of visiting the Site
shall be at the tenderer’s own expense.
1.12 The procuring entity’s employees, committee members, board members
and their relative (spouse and children) are not eligible to participate in the
tender.
1.13 The price to be changed for the tender document does not exceed
Kshs.5,000/=
1.14 The procuring entity shall allow the tenderer to review the tender
document free of charge before purchase.
2. Tender Documents
2.1 The complete set of tender documents comprises the documents listed
below and any addenda issued in accordance with Clause 2.4.
(a) These Instructions to Tenderers
(b) Form of Tender and Qualification Information
(c) Conditions of Contract
(d) Appendix to Conditions of Contract
(e) Specifications
(f) Drawings
(g) Bills of Quantities
(h) Forms of Securities
2.2 The tenderer shall examine all Instructions, Forms to be filled and
Specifications in the tender documents. Failure to furnish all information
required by the tender documents, or submission of a tender not
substantially responsive to the tendering documents in every respect will
be at the tenderer’s risk and may result in rejection of his tender.
2.3 A prospective tenderer making an inquiry relating to the tender documents
may notify the Employer in writing or by cable, telex or facsimile at the
address indicated in the letter of invitation to tender. The Employer will
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
only respond to requests for clarification received earlier than seven days
prior to the deadline for submission of tenders. Copies of the Employer’s
response will be forwarded to all persons issued with tendering
documents, including a description of the inquiry, but without identifying
its source.
2.4 Before the deadline for submission of tenders, the Employer may modify
the tendering documents by issuing addenda. Any addendum thus issued
shall be part of the tendering documents and shall be communicated in
writing or by cable, telex or facsimile to all tenderers. Prospective tenderers
shall acknowledge receipt of each addendum in writing to the Employer.
7
2.5 To give prospective tenderers reasonable time in which to take an
addendum into account in preparing their tenders, the Employer shall
extend, as necessary, the deadline for submission of tenders, in accordance
with Clause 4.2 here below.
3. Preparation of Tenders
3.1 All documents relating to the tender and any correspondence shall be in
English language.
3.2 The tender submitted by the tenderer shall comprise the following:
(a) These Instructions to Tenderers, Form of Tender, Conditions of
Contract, Appendix to Conditions of Contract and Specifications;
(b) Tender Security;
(c) Priced Bill of Quantities ;
(d) Qualification Information Form and Documents;
(e) Alternative offers where invited; and
(f) Any other materials required to be completed and submitted by the
tenderers.
3.3 The tenderer shall fill in rates and prices for all items of the Works
described in the Bill of Quantities. Items for which no rate or price is
entered by the tenderer will not be paid for when executed and shall be
deemed covered by the other rates and prices in the Bill of Quantities. All
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
duties, taxes, and other levies payable by the Contractor under the
Contract, or for any other cause relevant to the Contract, as of 30 days
prior to the deadline for submission of tenders, shall be included in the tender
price submitted by the tenderer.
3.4 The rates and prices quoted by the tenderer shall only be subject to
adjustment during the performance of the Contract if provided for in the
Appendix to Conditions of Contract and provisions made in the
Conditions of Contract.
3.5 The unit rates and prices shall be in Kenya Shillings.
3.6 Tenders shall remain valid for a period of sixty (90) days from the date of
submission. However in exceptional circumstances, the Employer may
request that the tenderers extend the period of validity for a specified
additional period. The request and the tenderers’ responses shall be made
in writing. A tenderer may refuse the request without forfeiting the
Tender Security. A tenderer agreeing to the request will not be required or
permitted to otherwise modify the tender, but will be required to extend
the validity of Tender Security for the period of the extension, and in
compliance with Clause 3.7 - 3.11 in all respects.
3.7 The tenderer shall furnish, as part of the tender, a Tender Security in the
amount and form specified in the appendix to invitation to tenderers. This
shall be in the amount not exceeding 2 percent of the tender price
3.8 The format of the Tender Security should be in accordance with the form
of Tender Security included in Section G - Standard forms or any other
form acceptable to the Employer . Tender Security shall be valid for 30
days beyond the validity of the tender.
3.9 Any tender not accompanied by an acceptable Tender Security shall be
rejected. The Tender Security of a joint venture must define as
“Tenderer” all joint venture partners and list them in the following
manner: a joint venture consisting of”…………”,”…………”,and
“…………”.
3.10 The Tender Securities of unsuccessful tenderers will be returned within 28
days of the end of the tender validity period specified in Clause 3.6.
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3.11 The Tender Security of the successful tenderer will be discharged when
the tenderer has signed the Contract Agreement and furnished the required
Performance Security.
3.12 The Tender Security may be forfeited
(a) if the tenderer withdraws the tender after tender opening during the
period of tender validity;
(b) if the tenderer does not accept the correction of the tender price,
pursuant to Clause 5.7;
(c) in the case of a successful tenderer, if the tenderer fails within the
specified time limit to
(i) sign the Agreement, or
(ii) Furnish the required Performance Security.
3.13 Tenderers shall submit offers that comply with the requirements of the
tendering documents, including the basic technical design as indicated in the
Drawings and Specifications. Alternatives will not be considered, unless
specifically allowed in the invitation to tender. If so allowed, tenderers
wishing to offer technical alternatives to the requirements of the tendering
documents must also submit a tender that complies with the requirements of
the tendering documents, including the basic technical design as indicated
in the Drawings and Specifications. In addition to submitting the basic
tender, the tenderer shall provide all information necessary for a complete
evaluation of the alternative, including design calculations, technical
specifications, breakdown of prices, proposed construction methods and
other relevant details. Only the technical alternatives, if any, of
the lowest evaluated tender conforming to the basic technical requirements
shall be considered.
3.14 The tenderer shall prepare one original of the documents comprising the
tender documents as described in Clause 3.2 of these Instructions to
Tenderers, bound with the volume containing the Form of Tender,
and clearly marked “ORIGINAL”. In addition, the tenderer shall submit
copies of the tender, in the number specified in the invitation to tender,
and clearly marked as “COPIES”. In the event of discrepancy between
them, the original shall prevail.
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3.15 The original and all copies of the tender shall be typed or written in
indelible ink and shall be signed by a person or persons duly authorised to
sign on behalf of the tenderer, pursuant to Clause 1.5 (a) or 1.6 (b), as the
case may be. All pages of the tender where alterations or additions have
been made shall be initialled by the person or persons signing the tender.
3.16 Clarification of tenders shall be requested by the tenderer to be received
by the procuring entity not later than 7 days prior to the deadline for
submission of tenders.
3.17 The procuring entity shall reply to any clarifications sought by the
tenderer within 3 days of receiving the request to enable the tenderer to make
timely submission of its tender.
3.18 The tender security shall be in the amount of 0.5 – 2 per cent of the tender
price.
4. Submission of Tenders
4.1 The tenderer shall seal the original and all copies of the tender in two inner
envelopes and one outer envelope, duly marking the inner envelopes as
“ORIGINAL” and “COPIES” as appropriate. The inner and outer
envelopes shall:
10
(a) be addressed to the Employer at the address provided in the
invitation to tender;
(b) bear the name and identification number of the Contract as defined
in the invitation to tender; and
(c) provide a warning not to open before the specified time and date
for tender opening.
4.2 Tenders shall be delivered to the Employer at the address specified above
not later than the time and date specified in the invitation to tender.
However, the Employer may extend the deadline for submission of tenders
by issuing an amendment in accordance with Sub-Clause 2.5 in which
case all rights and obligations of the Employer and the tenderers
previously subject to the original deadline will then be subject to the new
deadline.
4.3 Any tender received after the deadline prescribed in clause 4.2 will be
returned to the tenderer un-opened.
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4.4 Tenderers may modify or withdraw their tenders by giving notice in
writing before the deadline prescribed in clause 4.2. Each tenderer’s
modification or withdrawal notice shall be prepared, sealed, marked,
and delivered in accordance with clause 3.13 and 4.1, with the outer and
inner envelopes additionally marked “MODIFICATION”and
“WITHDRAWAL”, as appropriate. No tender may be modified after the
deadline for submission of tenders.
4.5 Withdrawal of a tender between the deadline for submission of
tenders and the expiration of the period of tender validity specified in the
invitation to tender or as extended pursuant to Clause 3.6 may result in the
forfeiture of the Tender Security pursuant to Clause 3.11.
4.6 Tenderers may only offer discounts to, or otherwise modify the prices of
their tenders by submitting tender modifications in accordance with
Clause 4.4 or be included in the original tender submission.
5. Tender Opening and Evaluation
5.1 The tenders will be opened by the Employer, including modifications
made pursuant to Clause 4.4, in the presence of the tenderers’ representatives
who choose to attend at the time and in the place specified in the invitation
to tender. Envelopes marked “WITHDRAWAL” shall be opened and
read out first. Tenderers’ and Employer’s representatives who are present
during the opening shall sign a register evidencing their attendance.
5.2 The tenderers’ names, the tender prices, the total amount of each tender
and of any alternative tender (if alternatives have been requested or
permitted), any discounts, tender modifications and withdrawals, the
presence or absence of Tender Security, and such other details as may be
considered appropriate, will be announced by the Employer at the
opening. Minutes of the tender opening, including the information
disclosed to those present will be prepared by the Employer.
5.3 Information relating to the examination, clarification, evaluation, and
comparison of tenders and recommendations for the award of Contract
shall not be disclosed to tenderers or any other persons not officially
concerned with such process until the award to the successful tenderer has
been announced. Any effort by a tenderer to influence the Employer’s
officials, processing of tenders or award decisions may result in the rejection
of his tender.
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5.4 To assist in the examination, evaluation, and comparison of tenders, the
Employer at his discretion, may ask any tenderer for clarification of the
tender, including breakdowns of unit rates. The request for clarification
and the response shall be in writing or by cable, telex or facsimile but no
change in the price or substance of the tender shall be sought, offered, or
permitted except as required to confirm the correction of arithmetic errors
discovered in the evaluation of the tenders in accordance with Clause 5.7.
5.5 Prior to the detailed evaluation of tenders, the Employer will determine
whether each tender (a) meets the eligibility criteria defined
in Clause 1.7;(b) has been properly signed; (c) is accompanied by the
required securities; and (d) is substantially responsive to the requirements
of the tendering documents. A substantially responsive tender is one
which conforms to all the terms, conditions and specifications of the
tendering documents, without material deviation or reservation. A
material deviation or reservation is one (a) which
affects in any substantial way the scope, quality, or performance of the
works; (b) which limits in any substantial way, inconsistent with the
tendering documents, the Employer’s rights or the tenderer’s obligations
under the Contract; or (c) whose rectification would affect unfairly the
competitive position of other tenderers presenting substantially responsive
tenders.
5.6 If a tender is not substantially responsive, it will be rejected, and may not
subsequently be made responsive by correction or withdrawal of the
nonconforming deviation or reservation.
5.7 Tenders determined to be substantially responsive will be checked for any
arithmetic errors. Errors will be corrected as follows:
(a) where there is a discrepancy between the amount in figures and the
amount in words, the amount in words will prevail; and
(b) where there is a discrepancy between the unit rate and the line item
total resulting from multiplying the unit rate by the quantity, the
unit rate as quoted will prevail, unless in the opinion of the
Employer, there is an obvious typographical error, in which case
the adjustment will be made to the entry containing that error.
(c) In the event of a discrepancy between the tender amount as stated
in the Form of Tender and the corrected tender figure in the main
summary of the Bill of Quantities, the amount as stated in the
Form of Tender shall prevail.
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(d) The Error Correction Factor shall be computed by expressing the
difference between the tender amount and the corrected tender sum
as a percentage of the corrected Builder’s Work (i.e. Corrected
tender sum less P.C. and Provisional Sums)
(e) The Error Correction Factor shall be applied to all Builder’s Work
(as a rebate or addition as the case may be) for the purposes of
valuations for Interim Certificates and valuation of variations.
(f) the amount stated in the tender will be adjusted in accordance with
the above procedure for the correction of errors and, with
concurrence of the tenderer, shall be considered as binding upon
the tenderer. If the tenderer does not accept the corrected amount,
the tender may be rejected and the Tender Security may be
forfeited in accordance with clause 3.11.
5.8 The Employer will evaluate and compare only the tenders determined to
be substantially responsive in accordance with Clause 5.5.
5.9 In evaluating the tenders, the Employer will determine for each tender the
evaluated tender price by adjusting the tender price as follows:
(a) making any correction for errors pursuant to clause 5.7;
(b) excluding provisional sums and the provision, if any, for
contingencies in the Bill of Quantities, but including Dayworks
where priced competitively.
(c) making an appropriate adjustment for any other acceptable
variations, deviations, or alternative offers submitted in accordance
with clause 3.12; and
(d) making appropriate adjustments to reflect discounts or other price
modifications offered in accordance with clause 4.6
5.10 The Employer reserves the right to accept or reject any variation,
deviation, or alternative offer. Variations, deviations, and alternative
offers and other factors which are in excess of the requirements of the tender
documents or otherwise result in unsolicited benefits for the Employer will
not be taken into account in tender evaluation.
5.11 The tenderer shall not influence the Employer on any matter relating to his
tender from the time of the tender opening to the time the Contract is
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awarded. Any effort by the Tenderer to influence the Employer or his
employees in his decision on tender evaluation, tender comparison or
Contract award may result in the rejection of the tender.
5.12 Firms incorporated in Kenya where indigenous Kenyans own 51% or
more of the share capital shall be allowed a 10% preferential bias provided
that they do not sub-contract work valued at more than 50% of the
Contract Price excluding Provisional Sums to an
non-indigenous sub-contractor.
6. Award of Contract
6.1 Subject to Clause 6.2, the award of the Contract will be made to the
tenderer whose tender has been determined to be substantially
responsive to the tendering documents and who has offered the lowest
evaluated tender price, provided that such tenderer has been determined to
be (a) eligible in accordance with the provision of Clauses 1.2, and (b)
qualified in accordance with the provisions of clause 1.7 and 1.8.
6.2 Notwithstanding clause 6.1 above, the Employer reserves the right to
accept or reject any tender, and to cancel the tendering process and reject
all tenders, at any time prior to the award of Contract, without thereby
incurring any liability to the affected tenderer or tenderers or any
obligation to inform the affected tenderer or tenderers of the grounds for
the action.
6.3 The tenderer whose tender has been accepted will be notified of the award
prior to expiration of the tender validity period in writing or by cable, telex
or facsimile. This notification (hereinafter and in all Contract documents
called the “Letter of Acceptance”) will state the sum (hereinafter and in all
Contract documents called the “Contract Price”)that the Employer will
pay the Contractor in consideration of the execution, completion, and
maintenance of the Works by the Contractor as prescribed by the Contract.
At the same time the other tenderers shall be informed that their tenders have
not been successful.
The contract shall be formed on the parties signing the contract.
6.4 The Agreement will incorporate all agreements between the Employer and
the successful tenderer. Within 14 days of receipt the successful tenderer
will sign the Agreement and return it to the Employer.
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6.5 Within 21 days after receipt of the Letter of Acceptance, the successful
tenderer shall deliver to the Employer a Performance Security in the amount
stipulated in the Appendix to Conditions of Contract and in the form
stipulated in the Tender documents. The Performance Security shall be in
the amount and specified form
6.6 Failure of the successful tenderer to comply with the requirements of
clause 6.5 shall constitute sufficient grounds for cancellation of the award
and forfeiture of the Tender Security.
6.7 Upon the furnishing by the successful tenderer of the Performance
Security, the Employer will promptly notify the other tenderers that their
tenders have been unsuccessful.
6.8 Preference where allowed in the evaluation of tenders shall not be allowed
for contracts not exceeding one year (12 months)
6.9 The tender evaluation committee shall evaluate the tender within 30 days
of the validity period from the date of opening the tender.
6.10 The parties to the contract shall have it signed within 30 days from the
date of notification of contract award unless there is an administrative review
request.
6.11 Contract price variations shall not be allowed for contracts not exceeding
one year (12 months)
6.12 Where contract price variation is allowed, the valuation shall not exceed
15% of the original contract price.
6.13 Price variation request shall be processed by the procuring entity within 30
days of receiving the request.
6.14 The procuring entity may at any time terminate procurement proceedings
before contract award and shall not be liable to any person for the
termination.
6.15 The procuring entity shall give prompt notice of the termination to the
tenderers and on request give its reasons for termination within 14 days of
receiving the request from any tenderer.
6.16 A tenderer who gives false information in the tender document about its
qualification or who refuses to enter into a contract after notification of
contract award shall be considered for debarment from participating in future
public procurement.
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7. Corrupt and Fraudulent practices
7.1 The procuring entity requires that tenderers observe the highest standards
of ethics during procurement process and execution of contracts. A
tenderer shall sign a declaration that he has not and will not be involved in
corrupt and fraudulent practices.
SECTION 6 CONDITIONS OF CONTRACT
Table of Contents
1 Definitions ………………………………………………… 18-20
2 Interpretation……………………………………………… 20
3 Language and Law ………………………………………… 21
4 Project Manager’s Decisions……………………………… 21
5 Delegation………………………………………………… 21
6 Communications ………………………………………… 21
7 Sub Contracting ………………………………………… 21
8 Other Contractors ……………………………………… 21
9 Personnel ………………………………………………… 21
10 Works……………………………………………………… 22
11 Safety and temporary works ……………………………… 22
12 Discoveries …………………………………………………22
13 Work Programme ………………………………………… 22-23
14 Possession of site ………………………………………… 23
15 Access to site …………………………………………… 23
16 Instructions ……………………………………………… 23
17 Extension or Acceleration of completion date ………… 23
18 Management Meetings ………………………………… 24
19 Early Warning …………………………………………… 24
20 Defects …………………………………………………… 24-25
21 Bills of Quantities ………………………………………… 25
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22 Variations ………………………………………………… 25-26
23 Payment certificates, currency of payments and
Advance Payments ……………………………………… 26-28
24 Compensation events …………………………………… 28-30
25 Price Adjustment ………………………………………… 30-31
26 Retention ………………………………………………… 31
27 Liquidated Damages……………………………………… 31
28 Securities ………………………………………………… 32
29 Day Works ……………………………………………… 32
30 Liability and Insurance …………………………………… 32-33
31 Completion and taking over ……………………………… 33-34
32 Final Account …………………………………………… 34
33 Termination ……………………………………………… 34-35
34 Payment upon termination ………………………………… 35-36
35 Release from performance ………………………………… 36
36 Corrupt gifts and payments of commission ………………36
37 Settlement of Disputes ………………………………………36-
CONDITIONS OF CONTRACT
1. Definitions
1.1 In this Contract, except where context otherwise requires, the following
terms shall be interpreted as indicated;
“Bill of Quantities” means the priced and completed Bill of Quantities
forming part of the tender.
“Compensation Events” are those defined in Clause 24 hereunder.
“The Completion Date” means the date of completion of the Works as
certified by the Project Manager, in accordance with Clause 31.
“The Contract” means the agreement entered into between the Employer
and the Contractor as recorded in the Agreement Form and signed by the
parties including all attachments and appendices thereto and all documents
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incorporated by reference therein to execute, complete, and maintain the
Works,
“The Contractor” refers to the person or corporate body whose tender to
carry out the Works has been accepted by the Employer.
“The Contractor’s Tender”is the completed tendering document
submitted by the Contractor to the Employer.
“The Contract Price” is the price stated in the Letter of Acceptance and
thereafter as adjusted in accordance with the provisions of the Contract.
“Days” are calendar days; “Months” are calendar months.
“A Defect” is any part of the Works not completed in accordance with the
Contract.
“The Defects Liability Certificate” is the certificate issued by Project
Manager upon correction of defects by the Contractor.
“The Defects Liability Period” is the period named in the Contract Data
and calculated from the Completion Date.
“Drawings” include calculations and other information provided or
approved by the Project Manager for the execution of the Contract.
“Dayworks” are Work inputs subject to payment on a time basis for
labour and the associated materials and plant.
“Employer”, or the “Procuring entity” as defined in the Public
Procurement Regulations (i.e. Central or Local Government
administration, Universities, Public Institutions and Corporations, etc) is the
party who employs the Contractor to carry out the Works.
“Equipment” is the Contractor’s machinery and vehicles brought
temporarily to the Site for the execution of the Works.
“The Intended Completion Date” is the date on which it is intended that
the Contractor shall complete the Works. The Intended Completion Date
may be revised only by the Project Manager by issuing an extension of
time or an acceleration order.
“Materials” are all supplies, including consumables, used by the
Contractor for incorporation in the Works.
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“Plant” is any integral part of the Works that shall have a mechanical,
electrical, chemical, or biological function.
“Project Manager” is the person named in the Appendix to Conditions of
Contract (or any other competent person appointed by the Employer and
notified to the Contractor, to act in replacement of the Project Manager) who
is responsible for supervising the execution of the Works and administering
the Contract and shall be an “Architect” or a “Quantity Surveyor” registered
under the Architects and Quantity Surveyors Act Cap
525 or an “Engineer” registered under Engineers Registration Act Cap
530.
“Site” is the area defined as such in the Appendix to Condition of
Contract.
“Site Investigation Reports” are those reports that may be included in
the tendering documents which are factual and interpretative about the
surface and subsurface conditions at the Site.
“Specifications” means the Specifications of the Works included in the
Contract and any modification or addition made or approved by the
Project Manager.
“Start Date” is the latest date when the Contractor shall commence
execution of the Works. It does not necessarily coincide with the Site
possession date(s).
“A Subcontractor” is a person or corporate body who has a Contract with
the Contractor to carry out a part of the Work in the Contract, which includes
Work on the Site.
“Temporary works” are works designed, constructed, installed, and
removed by the Contractor which are needed for construction or
installation of the Works.
“A Variation” is an instruction given by the Project Manager which varies the
Works.
“The Works” are what the Contract requires the Contractor to construct, install,
and turnover to the Employer, as defined in the Appendix to Conditions of Contract.
2. Interpretation
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2.1 In interpreting these Conditions of Contract, singular also means plural,
male also means female or neuter, and the other way around. Headings
have no significance. Words have their normal meaning in English
Language unless specifically defined. The Project Manager will provide
instructions clarifying queries about these Conditions of Contract.
2.2 If sectional completion is specified in the Appendix to Conditions of
Contract, reference in the Conditions of Contract to the Works, the
Completion Date and the Intended Completion Date apply to any section
of the Works (other than references to the Intended Completion Date for
the whole of the Works).
2.3 The following documents shall constitute the Contract documents and shall
be interpreted in the following order of priority;
(1) Agreement,
(2) Letter of Acceptance,
(3) Contractor’s Tender,
(4) Appendix to Conditions of Contract,
(5) Conditions of Contract,
(6) Specifications,
(7) Drawings,
(8) Bill of Quantities,
(9) Any other documents listed in the Appendix to Conditions of
Contract as forming part of the Contract.
Immediately after the execution of the Contract, the Project Manager
shall furnish both the Employer and the Contractor with two copies
each of all the Contract documents. Further, as and when necessary
the Project Manager shall furnish the Contractor [always with a copy
to the Employer] with three [3] copies of such further drawings or
details or descriptive schedules as are reasonably necessary either
to explain or amplify the Contract drawings or to enable the
Contractor to carry out and complete the Works in accordance with
these Conditions.
3. Language and Law
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3.1 Language of the Contract and the law governing the Contract shall be
English language and the Laws of Kenya respectively unless
otherwise stated.
4 Project Manager’s Decisions
4.1 Except where otherwise specifically stated, the Project Manager
will decide contractual matters between the Employer and the Contractor in
the role representing the Employer.
5 Delegation
5.1 The Project Manager may delegate any of his duties and responsibilities to
others after notifying the Contractor.
6 Communications
6.1 Communication between parties shall be effective only when in writing.
A notice shall be effective only when it is delivered.
7 Subcontracting
7.1 The Contractor may subcontract with the approval of the Project Manager,
but may not assign the Contract without the approval of the Employer in
writing. Subcontracting shall not alter the Contractor’s obligations.
8 Other Contractors
8.1 The Contractor shall cooperate and share the Site with other contractors,
public authorities, utilities etc. as listed in the Appendix to Conditions of
Contract and also with the Employer, as per the directions of the Project
Manager. The Contractor shall also provide facilities and services for them.
The Employer may modify the said List of Other Contractors etc., and shall
notify the Contractor of any such modification.
9 Personnel
9.1 The Contractor shall employ the key personnel named in the Qualification
Information, to carry out the functions stated in the said Information or other
personnel approved by the Project Manager. The Project Manager will
approve any proposed replacement of key personnel only if their
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relevant qualifications and abilities are substantially equal to or better than
those of the personnel listed in the Qualification Information. If the
Project Manager asks the Contractor to remove a person who is a member
of the Contractor’s staff or work force, stating the reasons, the Contractor
shall ensure that the person leaves the Site within seven days and has no
further connection with the Work in the Contract.
10 Works
10.1 The Contractor shall construct and install the Works in accordance with
the Specifications and Drawings. The Works may commence on the Start
Date and shall be carried out in accordance with the Program submitted by
the Contractor, as updated with the approval of the Project Manager, and
complete them by the Intended Completion Date.
11 Safety and Temporary Works
11.1 The Contractor shall be responsible for the design of temporary works.
However before erecting the same, he shall submit his designs including
specifications and drawings to the Project Manager and to any other relevant
third parties for their approval. No erection of temporary works shall be
done until such approvals are obtained.
11.2 The Project Manager’s approval shall not alter the Contractor’s
responsibility for design of the Temporary works and all drawings
prepared by the Contractor for the execution of the temporary or
permanent Works, shall be subject to prior approval by the Project
Manager before they can be used.
11.3 The Contractor shall be responsible for the safety of all activities on the
Site.
12. Discoveries
12.1 Anyth ing of historical or other interest or of significant value
unexpectedly discovered on Site shall be the property of the Employer.
The Contractor shall notify the Project Manager of such discoveries and
carry out the Project Manager’s instructions for dealing with them.
13. Work Program
13.1 Within the time stated in the Appendix to Conditions of Contract, the
Contractor shall submit to the Project Manager for approval a program
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13.2
showing the general methods, arrangements, order, and timing for all the
activities in the Works. An update of the program shall be a program
showing the actual progress achieved on each activity and the effect of the
progress achieved on the timing of the remaining Work, including any
changes to the sequence of the activities.
The Contractor shall submit to the Project Manager for approval an
updated program at intervals no longer than the period stated in the
Appendix to Conditions of Contract. If the Contractor does not submit an
updated program within this period, the Project Manager
may withhold the amount stated in the said Appendix from the next payment
certificate and continue to withhold this amount until the next payment
after the date on which the overdue program has been submitted. The Project
Manager’s approval of the program shall not alter the Contractor’s
obligations. The Contractor may revise the program and submit it to the
Project Manager again at any time. A revised program shall show the
effect of Variations and Compensation Events.
14. Possession of Site
14.1 The Employer shall give possession of all parts of the Site to the
Contractor. If possession of a part is not given by the date stated in the
Appendix to Conditions of Contract , the Employer will be deemed to
have delayed the start of the relevant activities, and this will be a
Compensation Event.
15. Access to Site
15.1 The Contractor shall allow the Project Manager and any other person
authorised by the Project Manager, access to the Site and to any place where
work in connection with the Contract is being carried out or is intended to
be carried out.
16. Instructions
16.1 The Contractor shall carry out all instructions of the Project Manager
which are in accordance with the Contract.
17. Extension or Acceleration of Completion Date
17.1 The Project Manager shall extend the Intended Completion Date if a
Compensation Event occurs or a variation is issued which makes it
impossible for completion to be achieved by the Intended Completion
Date without the Contractor taking steps to accelerate the remaining
Work, which would cause the Contractor to incur additional cost. The
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Project Manager shall decide whether and by how much to extend the
Intended Completion Date within 21 days of the Contractor asking the
Project Manager in writing for a decision upon the effect of a Compensation
Event or variation and submitting full supporting information. If the
Contractor has failed to give early warning of a delay or has failed to
cooperate in dealing with a delay, the delay caused by such failure shall not
be considered in assessing the new (extended) Completion Date.
17.2 No bonus for early completion of the Works shall be paid to the
Contractor by the Employer.
18. Management Meetings 18.1 A Contract management meeting shall be held monthly and attended by
the Project Manager and the Contractor. Its business shall be to review the
plans for the remaining Work and to deal with matters raised in
accordance with the early warning procedure. The Project Manager shall
record the minutes of management meetings and provide copies of the
same to those attending the meeting and the Employer. The responsibility
of the parties for actions to be taken shall be decided by the Project Manager
either at the management meeting or after the management meeting and
stated in writing to all who attended the meeting.
19. Early Warning
19.1 The Contractor shall warn the Project Manager at the earliest opportunity of specific likely future events or circumstances that may adversely affect
the quality of the Work, increase the Contract Price or delay the execution
of the Works. The Project Manager may require the Contractor to provide
an estimate of the expected effect of the future event or circumstance on
the Contract Price and Completion Date. The estimate shall be provided
by the Contractor as soon as reasonably possible.
19.2 The Contractor shall cooperate with the Project Manager in making and
considering proposals on how the effect of such an event or circumstance
can be avoided or reduced by anyone involved in the Work and in carrying
out any resulting instructions of the Project Manager.
20. Defects
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20.1 The Project Manager shall inspect the Contractor’s work and notify the
Contractor of any defects that are found. Such inspection shall not affect
the Contractor’s responsibilities. The Project Manager may instruct the
Contractor to search for a defect and to uncover and test any Work that the
Project Manager considers may have a defect. Should the defect be found,
the cost of uncovering and making good shall be borne by the Contractor,
However, if there is no defect found, the cost of uncovering and making
good shall be treated as a variation and added to the Contract Price.
20.2 The Project Manager shall give notice to the Contractor of any defects
before the end of the Defects Liability Period, which begins at
Completion, and is defined in the Appendix to Conditions of Contract.
The Defects Liability Period shall be extended for as long as defects
remain to be corrected.
20.3 Every time notice of a defect is given, the Contractor shall correct the
notified defect within the length of time specified by the Project
Manager’s notice. If the Contractor has not corrected a defect within the
time specified in the Project Manager’s notice, the Project Manager will
assess the cost of having the defect corrected by other parties and such
cost shall be treated as a variation and be deducted from the Contract
Price.
21. Bills Of Quantities
21.1 The Bills of Quantities shall contain items for the construction,
installation, testing and commissioning of the Work to be done by the
Contractor. The Contractor will be paid for the quantity of the Work done
at the rate in the Bills of Quantities for each item.
21.2 If the final quantity of the Work done differs from the quantity in the Bills
of Quantities for the particular item by more than 25 percent and provided
the change exceeds 1 percent of the Initial Contract price, the Project
Manager shall adjust the rate to allow for the change.
21.3 If requested by the Project Manager, the Contractor shall provide the
Project Manager with a detailed cost breakdown of any rate in the Bills of
Quantities.
22. Variations
22.1 All variations shall be included in updated programs produced by the
Contractor.
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22.2 The Contractor shall provide the Project Manager with a quotation for
carrying out the variations when requested to do so. The Project Manager
shall assess the quotation, which shall be given within seven days of the
request or within any longer period as may be stated by the Project Manager
and before the Variation is ordered.
22.3 If the work in the variation corresponds with an item description in the
Bills of Quantities and if in the opinion of the Project Manager, the
quantity of work is not above the limit stated in Clause 21.2 or the timing
of its execution does not cause the cost per unit of quantity to change, the
rate in the Bills of Quantities shall be used to calculate the value of the
variation. If the cost per unit of quantity changes, or
if the nature or timing of the work in the variation does not correspond
with items in the Bills of Quantities, the quotation by the Contractor shall
be in the form of new rates for the relevant items of Work.
22.4 If the Contractor’s quotation is unreasonable, the Project Manager may
order the variation and make a change to the Contract price, which shall be
based on the Project Manager’s own forecast of the effects of the variation
on the Contractor’s costs.
22.5 If the Project Manager decides that the urgency of varying the Work
would prevent a quotation being given and considered without delaying
the Work, no quotation shall be given and the variation shall be treated as
a Compensation Event.
22.6 The Contractor shall not be entitled to additional payment for costs that
could have been avoided by giving early warning.
22.7 When the Program is updated, the Contractor shall provide the Project
Manager with an updated cash flow forecast.
23. Payment Certificates, Currency of Payments and Advance Payments
23.1 The Contractor shall submit to the Project Manager monthly applications
for payment giving sufficient details of the Work done and materials on Site
and the amounts which the Contractor considers himself to be entitled to.
The Project Manager shall check the monthly application and certify the
amount to be paid to the Contractor within 14 days. The value of Work
executed and payable shall be determined by the Project Manager.
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23.2 The value of Work executed shall comprise the value of the quantities of
the items in the Bills of Quantities completed, materials delivered on Site,
variations and compensation events. Such materials shall become the
property of the Employer once the Employer has paid the Contractor for
their value . Thereafter, they shall not be removed from Site without the
Project Manager’s instructions except for use upon the Works.
23.3 Payments shall be adjusted for deductions for retention. The Employer
shall pay the Contractor the amounts certified by the Project Manager within
30 days of the date of issue of each certificate. If the Employer makes
a late payment, the Contractor shall be paid simple interest on the late
payment in the next payment. Interest shall be calculated on the basis of
number of days delayed at a rate three percentage points above the Central
Bank of Kenya’s average rate for base lending prevailing as of the first
day the payment becomes overdue.
23.4 If an amount certified is increased in a later certificate or as a result of an
award by an Arbitrator, the Contractor shall be paid interest upon the
delayed payment as set out in this clause. Interest shall be calculated from
the date upon which the increased amount would have been certified in the
absence of dispute.
23.5 Items of the Works for which no rate or price has been entered in will not
be paid for by the Employer and shall be deemed covered by other rates and
prices in the Contract.
23.6 The Contract Price shall be stated in Kenya Shillings. All payments to the
Contractor shall be made in Kenya Shillings and foreign currency in the
proportion indicated in the tender, or agreed prior to the execution of the
Contract Agreement and indicated therein. The rate of exchange for the
calculation of the amount of foreign currency payment shall be the rate of
exchange indicated in the Appendix to Conditions of Contract. If the
Contractor indicated foreign currencies for payment other than the
currencies of the countries of origin of related goods and services the
Employer reserves the right to pay the equivalent at the time of payment in
the currencies of the countries of such goods and services. The Employer
and the Project Manager shall be notified promptly by the Contractor of an
changes in the expected foreign currency requirements of the Contractor
during the execution of the Works as indicated in the Schedule of Foreign
Currency Requirements and the foreign and local currency portions of the
balance of the Contract Price shall then be amended by agreement
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between Employer and the Contractor in order to reflect appropriately
such changes.
23.7 In the event that an advance payment is granted, the following shall
apply:-
a) On signature of the Contract, the Contractor shall at his request,
and without furnishing proof of expenditure, be entitled to an
advance of 10% (ten percent) of the original amount of the Contract.
The advance shall not be subject to retention money.
b) No advance payment may be made before the Contractor has
submitted proof of the establishment of deposit or a directly
liable guarantee satisfactory to the Employer in the amount of the
advance payment. The guarantee shall be in the same currency as
the advance.
c) Reimbursement of the lump sum advance shall be made by
deductions from the Interim payments and where applicable from the
balance owing to the Contractor. Reimbursement shall begin when
the amount of the sums due under the Contract reaches 20% of the
original amount of the Contract. It shall have been completed
by the time 80% of this amount is reached.
The amount to be repaid by way of successive deductions shall be calculated by
means of the formula:
Where:
R = A(x1 – x11)
80 – 20
R = the amount to be reimbursed
A = the amount of the advance which has been granted
X1 = the amount of proposed cumulative payments as a
percentage of the original amount of the Contract.
This figure will exceed 20% but not exceed 80%.
X11 = the amount of the previous cumulative payments as
a percentage of the original amount of the Contract.
This figure will be below 80%but not less than
20%.
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d) with each reimbursement the counterpart of the directly liable
guarantee may be reduced accordingly.
24. Compensation Events
24.1 The following issues shall constitute Compensation Events:
(a) The Employer does not give access to a part of the Site by the Site
Possession Date stated in the Appendix to Conditions of Contract.
(b) The Employer modifies the List of Other Contractors, etc., in a
way that affects the Work of the Contractor under the Contract.
(c) The Project Manager orders a delay or does not issue drawings,
specifications or instructions required for execution of the Works
on time.
(d) The Project Manager instructs the Contractor to uncover or to carry
out additional tests upon the Work, which is then found to have no
defects.
(e) The Project Manager unreasonably does not approve a subcontract
to be let.
(f) Ground conditions are substantially more adverse than could
reasonably have been assumed before issuance of the Letter of
Acceptance from the information issued to tenderers (including the
Site investigation reports), from information available publicly and
from a visual inspection of the Site.
30
(g) The Project Manager gives an instruction for dealing with an
unforeseen condition, caused by the Employer or additional work
required for safety or other reasons.
(h) Other contractors, public authorities, utilities, or the Employer
does not work within the dates and other constraints stated in the
Contract, and they cause delay or extra cost to the Contractor.
(i) The effects on the Contractor of any of the Employer’s risks.
(j) The Project Manager unreasonably delays issuing a Certificate of
Completion.
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(k) Other compensation events described in the Contract or determined
by the Project Manager shall apply.
24.2 If a compensation event would cause additional cost or would prevent the
Work being completed before the Intended Completion Date, the Contract
Price shall be increased and/or the Intended Completion Date shall be
extended. The Project Manager shall decide whether and by how much
the Contract Price shall be increased and whether and by how much the
Intended Completion Date shall be extended.
24.3 As soon as information demonstrating the effect of each compensation
event upon the Contractor’s forecast cost has been provided by the
Contractor, it shall be assessed by the Project Manager, and the Contract
Price shall be adjusted accordingly. If the Contractor’s forecast is deemed
unreasonable, the Project Manager shall adjust the Contract Price based on
the Project Manager’s own forecast. The
Project Manager will assume that the Contractor will react competently
and promptly to the event.
24.4 The Contractor shall not be entitled to compensation to the extent that the
Employer’s interests are adversely affected by the Contractor not having
given early warning or not having co-operated with the Project Manager.
24.5 Prices shall be adjusted for fluctuations in the cost of inputs only if
provided for in the Appendix to Conditions of Contract.
24.6 The Contractor shall give written notice to the Project Manager of his
intention to make a claim within thirty days after the event giving rise to
the claim has first arisen. The claim shall be submitted within thirty days
thereafter.
Provided always that should the event giving rise to the claim of
continuing effect, the Contractor shall submit an interim claim within the
said thirty days and a final claim within thirty days of the end of the event
giving rise to the claim.
25. Price Adjustment
25.1 The Project Manager shall adjust the Contract Price if taxes, duties and
other levies are changed between the date 30 days before the submission
of tenders for the Contract and the date of Completion. The adjustment
shall be the change in the amount of tax payable by the Contractor.
25.2 The Contract Price shall be deemed to be based on exchange rates current
at the date of tender submission in calculating the cost to the Contractor of
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materials to be specifically imported (by express provisions in the
Contract Bills of Quantities or Specifications) for permanent incorporation
in the Works. Unless otherwise stated in the Contract, if at any time
during the period of the Contract exchange rates shall be varied and this shall
affect the cost to the Contractor of such materials, then the Project Manager
shall assess the net difference in the cost of such materials. Any amount
from time to time so assessed shall be added to or deducted from the
Contract Price, as the case may be.
25.3 Unless otherwise stated in the Contract, the Contract Price shall be
deemed to have been calculated in the manner set out below and in sub-
clauses 25.4 and 25.5 and shall be subject to adjustment in the events
specified thereunder;
(i) The prices contained in the Contract Bills of Quantities shall be
deemed to be based upon the rates of wages and other
emoluments and expenses as determined by the Joint Building
Council of Kenya (J.B.C.) and set out in the schedule of basic rates
issued 30 days before the date for submission of tenders.A copy of
the schedule used by the Contractor in his pricing shall be attached
in the Appendix to Conditions of Contract.
(ii) Upon J.B.C. determining that any of the said rates of wages or
other emoluments and expenses are increased or decreased, then
the Contract Price shall be increased or decreased by the amount
assessed by the Project Manager based upon the difference,
expressed as a percentage, between the rate set out
in the schedule of basic rates issued 30 days before the date for
submission of tenders and the rate published by the J.B.C. and
applied to the quantum of labour incorporated within the amount of
Work remaining to be executed at the date of publication of such
increase or decrease.
(iii) No adjustment shall be made in respect of changes in the rates of
wages and other emoluments and expenses which occur after the
date of Completion except during such other period as may be
granted as an extension of time under clause 17.0 of these
Conditions.
25.4 The prices contained in the Contract Bills of Quantities shall be deemed to
be based upon the basic prices of materials to be permanently incorporated
in the Works as determined by the J.B.C. and set out in the schedule of basic
rates issued 30 days before the date for submission of tenders. A copy
of the schedule used by the Contractor in his pricing shall be attached
in the Appendix to Conditions of Contract.
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25.5 Upon the J.B.C. determining that any of the said basic prices are increased
or decreased then the Contract Price shall be increased or decreased by the
amount to be assessed by the Project Manager based upon the difference
between the price set out in the schedule of basic rates issued 30 days before
the date for submission of tenders and the rate published by the J.B.C. and
applied to the quantum of the relevant materials which have not been taken
into account in arriving at the amount of any interim certificate under clause
23 of these Conditions issued before the date of publication of such
increase or decrease.
25.6 No adjustment shall be made in respect of changes in basic prices of
materials which occur after the date for Completion except during such other
period as may be granted as an extension of time under clause 17.0 of these
Conditions.
25.7 The provisions of sub-clause 25.1 to 25.2 herein shall not apply in respect
of any materials included in the schedule of basic rates.
26. Retention
26.1 The Employer shall retain from each payment due to the Contractor the
proportion stated in the Appendix to Conditions of Contract until
Completion of the whole of the Works. On Completion of the whole of
the Works, half the total amount retained shall be repaid to the Contractor
and the remaining half when the Defects Liability Period has passed and the
Project Manager has certified that all defects notified to the Contractor
before the end of this period have been corrected.
27. Liquidated Damages
27.1 The Contractor shall pay liquidated damages to the Employer at the rate
stated in the Appendix to Conditions of Contract for each day that the actual
Completion Date is later than the Intended Completion Date. The
Employer may deduct liquidated damages from payments due to the
Contractor. Payment of liquidated damages shall not alter the
Contractor’s liabilities.
27.2 If the Intended Completion Date is extended after liquidated damages have
been paid, the Project Manager shall correct any overpayment of
liquidated damages by the Contractor by adjusting the next payment
certificate. The Contractor shall be paid interest on the overpayment,
calculated from the date of payment to the date of repayment, at the rate
specified in Clause 23.30
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28. Securities
28.1 The Performance Security shall be provided to the Employer no later than
the date specified in the Letter of Acceptance and shall be issued in an
amount and form and by a reputable bank acceptable to the Employer, and
denominated in Kenya Shillings. The Performance Security shall be valid
until a date 30 days beyond the date of issue of the Certificate of Completion.
29. Dayworks
29.1 If applicable, the Dayworks rates in the Contractor’s tender shall be used
for small additional amounts of Work only when the Project Manager has
given written instructions in advance for additional work to be paid for in
that way.
29.2 All work to be paid for as Dayworks shall be recorded by the Contractor
on Forms approved by the Project Manager. Each
completed form shall be verified and signed by the Project Manager
within two days of the Work being done.
29.3 The Contractor shall be paid for Dayworks subject to obtaining signed
Dayworks forms.
30. Liability and Insurance
30.1 From the Start Date until the Defects Correction Certificate has been
issued, the following are the Employer’s risks:
(a) The risk of personal injury, death or loss of or damage to property
(excluding the Works, Plant, Materials and Equipment), which are
due to;
(i) use or occupation of the Site by the Works or for the
purpose of the Works, which is the unavoidable result of
the Works, or
(ii) negligence, breach of statutory duty or interference with
any legal right by the Employer or by any person employed
by or contracted to him except the Contractor.
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(b) The risk of damage to the Works, Plant, Materials, and Equipment
to the extent that it is due to a fault of the Employer or in Employer’s
design, or due to war or radioactive contamination directly affecting
the place where the Works are being executed.
30.2 From the Completion Date until the Defects Correction Certificate has
been issued, the risk of loss of or damage to the Works, Plant, and Materials
is the Employer’s risk except loss or damage due to;
(a) a defect which existed on or before the Completion Date.
(b) an event occurring before the Completion Date, which was not
itself the Employer’s risk
(c) the activities of the Contractor on the Site after the Completion
Date.
30.3 From the Start Date until the Defects Correction Certificate has been
issued, the risks of personal injury, death and loss of or damage to
property (including, without limitation, the Works, Plant, Materials, and
Equipment) which are not Employer’s risk are Contractor’s risks.
The Contractor shall provide, in the joint names of the Employer and the
Contractor, insurance cover from the Start Date to the end of the Defects
Liability Period, in the amounts stated in the Appendix to Conditions of
Contract for the following events;
(a) loss of or damage to the Works, Plant, and Materials;
(b) loss of or damage to Equipment;
(c) loss of or damage to property (except the Works, Plant, Materials,
and Equipment) in connection with the Contract, and
(d) personal injury or death.
30.4 Policies and certificates for insurance shall be delivered by the Contractor
to the Project Manager for the Project Manager’s approval before the Start
Date. All such insurance shall provide for compensation required to
rectify the loss or damage incurred.
30.5 If the Contractor does not provide any of the policies and certificates
required, the Employer may effect the insurance which the Contractor
should have provided and recover the premiums from payments otherwise
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due to the Contractor or, if no payment is due, the payment of the
premiums shall be a debt due.
30.6 Alterations to the terms of an insurance shall not be made without the
approval of the Project Manager. Both parties shall comply with any
conditions of insurance policies.
31. Completion and taking over
31.1 Upon deciding that the Works are complete, the Contractor shall issue a
written request to the Project Manager to issue a Certificate of
Completion of the Works. The Employer shall take over the Site and the
Works within seven [7] days of the Project Manager’s issuing a Certificate
of Completion.
32. Final Account
32.1 The Contractor shall issue the Project Manager with a detailed account of
the total amount that the Contractor considers payable to him by the
Employer under the Contract before the end of the Defects Liability
Period. The Project Manager shall issue a Defects Liability Certificate
and certify any final payment that is due to the Contractor within 30 days
of receiving the Contractor’s account if it is correct and complete. If it is
not, the Project Manager shall issue within 30 days a schedule that states the
scope of the corrections or additions that are necessary. If the final account
is still unsatisfactory after it has been resubmitted, the Project Manager shall
decide on the amount payable to the Contractor and issue a Payment
Certificate. The Employer shall pay the Contractor the amount due in the
Final Certificate within 60 days.
33. Termination
33.1 The Employer or the Contractor may terminate the Contract if the other
party causes a fundamental breach of the Contract. These
Fundamental breaches of Contract shall include, but shall not be limited
to, the following;
(a) the Contractor stops work for 30 days when no stoppage of work is
shown on the current program and the stoppage has not been
authorised by the Project Manager;
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(b) the Project Manager instructs the Contractor to delay the progress
of the Works, and the instruction is not withdrawn within 30 days;
(c) the Contractor is declared bankrupt or goes into liquidation other
than for a reconstruction or amalgamation;
(d) a payment certified by the Project Manager is not paid by the
Employer to the Contractor within 30 days (for Interim Certificate)
or 60 days (for Final Certificate)of issue.
(e) the Project Manager gives notice that failure to correct a particular
defect is a fundamental breach of Contract and the Contractor fails
to correct it within a reasonable period of time determined by the
Project Manager;
(f) the Contractor does not maintain a security, which is required.
33.2 When either party to the Contract gives notice of a breach of Contract to
the Project Manager for a cause other than those listed under Clause 33.1
above, the Project Manager shall decide whether the breach is
fundamental or not.
33.3 Notwithstanding the above, the Employer may terminate the Contract for
convenience.
33.4 If the Contract is terminated, the Contractor shall stop work immediately,
make the Site safe and secure, and leave the Site as soon as reasonably
possible. The Project Manager shall immediately thereafter arrange for a
meeting for the purpose of taking record of the Works executed and
materials , goods, equipment and temporary buildings on Site.
34. Payment Upon Termination
34.1 If the Contract is terminated because of a fundamental breach of Contract
by the Contractor, the Project Manager shall issue a certificate for the
value of the Work done and materials ordered and delivered to Site up to the
date of the issue of the certificate. Additional liquidated damages shall not
apply. If the total amount due to the Employer exceeds any payment due
to the Contractor, the difference shall be a debt payable by the Contractor.
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34.2 If the Contract is terminated for the Employer’s convenience or because of
a fundamental breach of Contract by the Employer, the Project Manager
shall issue a certificate for the value of the Work done, materials ordered,
the reasonable cost of removal of equipment, repatriation of the Contractor’s
personnel employed solely on the
Works, and the Contractor’s costs of protecting and securing the Works.
34.3 The Employer may employ and pay other persons to carry out and
complete the Works and to rectify any defects and may enter upon the
Works and use all materials on the Site, plant, equipment and temporary
works.
34.4 The Contractor shall, during the execution or after the completion of the
Works under this clause remove from the Site as and when required,
within such reasonable time as the Project Manager may in writing
specify, any temporary buildings, plant, machinery, appliances, goods or
materials belonging to or hired by him, and in default the Employer may
(without being responsible for any loss or damage) remove and sell any
such property of the Contractor, holding the proceeds less all costs
incurred to the credit of the Contractor.
Until after completion of the Works under this clause the Employer shall not
be bound by any other provision of this Contract to make any payment to
the Contractor, but upon such completion as aforesaid and the verification
within a reasonable time of the accounts therefore the Project Manager shall
certify the amount of expenses properly incurred by the Employer and, if
such amount added to the money paid to the Contractor before such
determination exceeds the total amount which would have been payable
on due completion in accordance with this Contract the difference shall be
a debt payable to the Employer by the Contractor; and if the said amount
added to the said money be less than the said total amount, the difference
shall be a debt payable by the Employer to the Contractor.
35. Release from Performance
35.1 If the Contract is frustrated by the outbreak of war or by any other event
entirely outside the control of either the Employer or the Contractor, the
Project Manager shall certify that the Contract has been frustrated. The
Contractor shall make the Site safe and stop Work as quickly as possible
after receiving this certificate and shall be paid for all Work carried out
before receiving it.
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36. Corrupt gifts and payments of commission
The Contractor shall not;
(a) Offer or give or agree to give to any person in the service of the
Employer any gift or consideration of any kind as an inducement or
reward for doing or forbearing to do or for having done or forborne to do
any act in relation to the obtaining or execution of this or any other Contract
for the Employer or for showing or forbearing to show favour or disfavour
to any person in relation to this or any other contract for the Employer.
(b) Enter into this or any other contract with the Employer in connection with
which commission has been paid or agreed to be paid by him or on his
behalf or to his knowledge, unless before the Contract is made particulars of
any such commission and of the terms and conditions of any agreement for
the payment thereof have been disclosed in writing to the Employer.
Any breach of this Condition by the Contractor or by anyone employed by
him or acting on his behalf (whether with or without the knowledge of the
Contractor) shall be an offence under the provisions of the Public
Procurement Regulations issued under The Exchequer and Audit Act Cap
412 of the Laws of Kenya.
37. Settlement Of Disputes
37.1 In case any dispute or difference shall arise between the Employer or the
Project Manager on his behalf and the Contractor, either during the progress
or after the completion or termination of the Works, such dispute shall be
notified in writing by either party to the other with a request to submit it
to arbitration and to concur in the appointment of an Arbitrator within thirty
days of the notice. The dispute shall be referred to the arbitration and final
decision of a person to be agreed between the parties. Failing agreement to
concur in the appointment of an Arbitrator, the Arbitrator shall be appointed
by the Chairman or Vice Chairman of any of the following professional
institutions;
(i) Architectural Association of Kenya
(ii) Institute of Quantity Surveyors of Kenya
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(iii) Association of Consulting Engineers of Kenya
(iv) Chartered Institute of Arbitrators (Kenya Branch)
(v) Institution of Engineers of Kenya
On the request of the applying party. The institution written to first by the
aggrieved party shall take precedence over all other institutions.
37.2 The arbitration may be on the construction of this Contract or on any
matter or thing of whatsoever nature arising thereunder or in connection
therewith, including any matter or thing left by this Contract to the
discretion of the Project Manager, or the withholding by the Project
Manager of any certificate to which the Contractor may claim to be
entitled to or the measurement and valuation referred to in clause 23.0 of
these conditions, or the rights and liabilities of the parties subsequent to
the termination of Contract.
37.3 Provided that no arbitration proceedings shall be commenced on any
dispute or difference where notice of a dispute or difference has not been
given by the applying party within ninety days of the occurrence or
discovery of the matter or issue giving rise to the dispute.
37.4 Notwithstanding the issue of a notice as stated above, the arbitration of
such a dispute or difference shall not commence unless an attempt has in the
first instance been made by the parties to settle such dispute or difference
amicably with or without the assistance of third parties. Proof of such
attempt shall be required.
37.5 Notwithstanding anything stated herein the following matters may be
referred to arbitration before the practical completion of the Works or
abandonment of the Works or termination of the Contract by either party:
37.5.1 The appointment of a replacement Project Manager
upon the said person ceasing to act.
37.5.2 Whether or not the issue of an instruction by the Project
Manager is empowered by these Conditions.
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37.5.3 Whether or not a certificate has been improperly withheld
or is not in accordance with these Conditions.
37.5.4 Any dispute or difference arising in respect of war risks
or war damage.
37.6 All other matters shall only be referred to arbitration after the completion
or alleged completion of the Works or termination or alleged termination
of the Contract, unless the Employer and the Contractor agree otherwise in
writing.
37.7 The Arbitrator shall, without prejudice to the generality of his powers,
have powers to direct such measurements, computations, tests or
valuations as may in his opinion be desirable in order to determine the rights
of the parties and assess and award any sums which ought to have been the
subject of or included in any certificate.
37.8 The Arbitrator shall, without prejudice to the generality of his powers,
have powers to open up, review and revise any certificate, opinion, decision,
requirement or notice and to determine all matters in dispute which shall be
submitted to him in the same manner as if no such certificate, opinion,
decision requirement or notice had been given.
37.9 The award of such Arbitrator shall be final and binding upon the parties.
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
APPENDIX - SPECIAL CONDITIONS OF CONTRACT
Special conditions of contract shall supplement the general conditions of
contract, wherever there is a conflict between the GCC and the SCC, the
provisions of the SCC herein shall prevail over those in the GCC.
Special conditions of contract with reference to the general conditions of
contract.
General conditions of contract reference
Special conditions of contract
3 Applicable law, The laws of Kenya
25 No price adjustments will be allowed during the term of the
contract
An indemnity cover will be required
37 Specify resolution of disputes
Financial Bid. To be enclosed in a separate envelope from the Technical Bid
Other’s as necessary Complete as necessary
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
PROPOSED REHABILITATION WORKS TO PART OF NEW KCC SOSIANI FACTORY OF
UHT STORES
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
PARTICULAR AND GENERAL PRELIMINARIES
1.All works are provisional and subject to final
measurement
2.Contractor to visit the site and note/ascertain the extent
of the works
3. Contractor to use quality materials for permanent
works e.g. sand, grano, and chips etc.
4.Curing of the works to be fully followed
5.Works to be done in bays and appropriate pvc dividing
strips to be used
6.Any paint work to be done after scrapping off old paint
and crown paint first grade quality to be used
7.Allow grinding/polishing the grano after laying within
rates
8.Any preliminaries/overheads to be quoted within rates
9.Substandard works will not be accepted
10.Work to be done with speed since the area will be
required for use urgently as a UHT store
Total carried to summary page
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
A
MEASURED WORKS
DEMOLITIONS
Item
1
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
B
C
A
B
Allow for demolition of existing decommissioned plant
and equipment and set aside as directed by the Engineer
Allow for demolition to existing walls within the factory
floor as directed by the Engineer and cart away debris
from the site
Allow for any other demolitions as directed by the
Engineer
WALLING
200mm solid in hollow blocks in cement, sand ,lime
mortar and reinforced with hoop
75 x45mm Aluminium powder coated partitions with
12mm MDF partitions at 1100mm and glass above
complete with all necessary biddings and wash rubber
Total carried to summary page
Item
Item
Sm
Sm
1
1
278
218
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
A
B
DOORS
900mm x2100mm Aluminium doors complete with iron
iron mongery to offices
900mm x2100mm metal door to filling room
No
No
5
1
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
C
D
A
B
C
D
E
F
3050 x3000mm sliding door complete with top bottom
rail made of 50 x50 x3mm fixed angle frame and 3mm
thick chequered plate welded with 3mm x200mm
lockable towers
Allow for repairs and painting all existing sliding doors
INTERNAL FINISHES
12mm two coat lime plaster new walls
Hack and prepare floor to receive new floor screed
Prepare and lay 30mm thick floor screed to receive grano
floor
Supply and install grano floor as approved by the client
Prepare and apply three coats of gloss paint
Prepare and apply three coats of gloss paint to existing
walls (both internal and external)
Total carried to summary page
No
Item
Sm
Sm
Sm
Sm
Sm
Sm
2
1
556
2350
2350
2350
556
2751
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
A
B
C
STEEL CASEMENT WINDOWS
Standard window casement with hinges, stays
,fasteners, permanent vents assembled and fixed to
opening including cutting and pinning lugs to concrete
or block work surrounding the bedding frame in
cement sand mortar
Ditto 2400 x1600mm
Ditto 2500 x1500mm
Ditto 1900 x1000mm
No
No
No
8
7
15
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
D
E
A
B
C
D
E
F
Ditto 1900 x1300mm
Ditto 1400 x1300mm
METAL GRILL WINDOWS
Mild steel metal grill framed with 40 x50 x3mm RHS
including assembly and fixing to opening, cutting and
pinning lugs to concrete or block work and bedding frame
in cement sand mortar
Ditto 2400 x1600mm
Ditto 2500 x1500mm
Ditto 1900 x1000mm
Ditto 1900 x1300mm
Ditto 1400 x1300mm
Ditto 90 x1600mm
Total carried to summary page
No
No
No
No
No
No
No
No
8
6
8
7
15
8
6
4
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
A
ROOFING AND RAIN WATER DISPOSAL
Framed structural steel work mild steel: one coat red
oxide or equal approved primer after fabrication but
before erection:welded connections in accordance
with structural drawings: hoisting 7.5m from ground
level and fixed to existing roof structure and cover:
trusses fixed to universal columns using mild steel
bolts(ms)
The following in 5no truss type T1
75 x50 x4mm RHS truss angles
50 x50 x4mm Truss angles
100 x75 x3mm purlins
Lm
235
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
B
C
D
E
F
G
75 x75 x 3mm purlins
Aluminium IT5 gauge 24 box profiled
Industrial tough sheet laid including 150mm end laps and
one boxed side lap with cover width 868mm on Z purlins
(ms)fixed with approved hook, bolt and rubber cap
washers
Extra over roof fixed 2000mm x1000mm wide fiber glass
roof lights
Ditto for cutting perforations for cyclone exhauster raised
above the roof
Total carried forward
Lm
Lm
Lm
Sm
No
No
215
203
825
3465
45
12
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
H
I
J
K
L
Total brought forward
Extra over 1500 x2000mm jerk roof structural supported
by 50 x59 x3mm SHS with gauge wire mesh in MS
600mm above roof ridge for ventilation purposes
Extra over for roof cladding to gable and verge ends
Rain Water Disposal
400 x200mm deep box shaped purpose made gutter using
3mm thick mild steel sheets
Extra over 400 x200mm gutter for making 150mm dia
holes for down pipe
Extra over gutter for stopped ends
150mm dia heavy UPVC downpipe fixed to wall with
brackets at 1000mm c/c
No
Sm
Lm
No
No
12
113
365
22
22
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
M
N
O
P
Extra over 150mm dia pipe for bend
Ditto for 600mm long swan neck
Ditto 200mm shoe
Total carried to summary page
No
No
No
No
22
22
22
250
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
A
B
PROVISIONAL SUMS
Electrical works
Allow a provisional sum of Ksh 500,000 as directed by
the Engineer
Drainage works
Allow a provisional sum of Ksh 500,000 for drainage
works as directed by the Engineer
Item
Item
1
1
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
Total carried to summary page
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
SUMMARY PAGE
Particular and General Preliminaries
Demolitions and Walling
Doors and Internal Finishes
Windows and Metal Grills
Roofing and Rain Water Disposal
Provisional sums
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
Subtotal 1 carried forward
ITEM DESCRIPTION UNIT QTY RATE KSH CTS
Subtotal 1 brought forward
Add 10% Contingency
Subtotal 2
Add 16% VAT
Grand total
Time of Completion of the Works
………………………………Weeks
Name and Address of the Contractor
We certify that we visited the site and shown the works
and satisfied ourselves with the extent and scope of the
works
Signature……………………………
Date…………………………............
Page8
NKCC/085/2017-18 PROPOSED REHABILITATION WORKS OF UHT STORES
APPENDIX II - TENDER QUESTIONNAIRE
Please fill in block letters.
1. Full names of tenderer
………………………………………………………………………………………
2. Full address of tenderer to which tender correspondence is to be sent (unless an
agent has been appointed below)
………………………………………………………………………………………
3. Telephone number (s) of tenderer
………………………………………………………………………………………
4. Telex address of tenderer
………………………………………………………………………………………
5. Email address of tenderer
………………………………………………………………………………………
6. Name of tenderer’s representative to be contacted on matters of the tender during
the tender period
………………………………………………………………………………………
7. Details of tenderer’s nominated agent (if any) to receive tender notices. This is
essential if the tenderer does not have his registered address in Kenya (name,
address, telephone, telex)
………………………………………………………………………………………
………………………………………………………………………………………
Signature of Tenderer
Make copy and deliver to: (Name of Employer)
149
APPENDIX III - CONFIDENTIAL BUSINESS QUESTIONNAIRE
(Form SS3)
You are requested to give the particulars indicated in Part 1 and either Part 2 (a), 2 (b) or 2 (c) and
2 (d) whichever applies to your type of business.
You are advised that it is a serious offence to give false information on this Form.
Part 1 – General
Business Name ………………………………………………………………………
Location of business premises; Country/Town……………………….
Plot No……………………………………… Street/Road …………………………
Postal Address……………………………… Tel No………………………………..
Nature of Business…………………………………………………………………..
Current Trade Licence No…………………… Expiring date…………………
Maximum value of business which you can handle at any time: Ksh………………………..
Name of your bankers………………………………………………………………
Branch…………………………………………………………………………………
Part 2 (a) – Sole Proprietor
Your name in full…………………………………… Age…………………………
Nationality………………………………… Country of Origin…………………
*Citizenship details …………………………………………………………………
Part 2 (b) – Partnership
Give details of partners as follows:
150
Name in full Nationality Citizenship Details Shares
1……………………………………………………………………………………
2……………………………………………………………………………………
3……………………………………………………………………………………
Part 2(c) – Registered Company:
Private or public……………………………………………………………
State the nominal and issued capital of the Company-
Nominal Kshs…………………………………………………………………
Issued Kshs……………………………………………………………………
Give details of all directors as follows:
Name in full . Nationality. Citizenship Details*. Shares.
1.……………………………………………………………………………………
2.……………………………………………………………………………………
3.……………………………………………………………………………………
4.……………………………………………………………………………………
Part 2(d) – Interest in the Firm:
Is there any person / persons in …………… ………(Name of Employer) who has
interest in this firm? Yes/No………………………(Delete as necessary)
I certify that the information given above is correct.
……………………… ……………………… …………………
(Title) (Signature) (Date)
Attach proof of citizenship
151
FORM OF BID SECURITY (BANK GUARANTEE) – TENDER SECURITY
WHEREAS, …………………………………….. (hereinafter called “the Bidder”) has
submitted his bid dated ………………… for PROPOSED REHABILITATION
WORKS OF UHT STORES AT SOSIANI NEWKCC FACTORY (hereinafter
called “the Bid”).
KNOW ALL MEN by these presents that we ………………………………………….
of ………………………………………………. Having our registered office at
………………………………………………………. (hereinafter called “the Bank”)
are bound unto NEW KCC LTD (hereinafter called “the Employer”) in the sum Ksh
ONE hundred thousand only (Ksh100,000 ) for which payment well and truly to be
made to the said Employer the Bank binds himself, his successors and assigns by these
presents.
SEALED with the Common Seal of the Bank this …………… day of ……… 20 …….
The CONDITIONS of this obligation are:
(1) If the bidder withdraws his Bid during the period of bid validity specified in the Form
of Bid;
Or
(2) If the Bidder having been notified of the acceptance of his Bid by the Employer
during the period of bid validity:
(a) Fails or refuses to execute the Form of Agreement in accordance with the
Instruction to Bidders, if required; or
(b) Fails or refuses to furnish the Performance Security, in accordance with the
Instruction to Bidders,
We undertake to pay to the Employer up to the above amount upon receipt of his first
written demand, without the Employer having to substantiate his demand, provided that
in his demand the Employer will note that the amount claimed is due to him owing to the
occurrence of one or both of the two conditions, specifying the occurred condition or
conditions.
This Guarantee will remain in force up to and including the date 120 days after the
deadline for submission of bids such as deadlines is stated in the instructions to Bidders
or as it maybe extended by the Employer, notice of which extension(s) to the Bank is
hereby waived. Any demand in respect of this Guarantee should reach the Bank not later
than the above date.
DATE: SIGNATURE OF THE BANK
WITNESS: SEAL
(Signature, Name and Address) pn
152
CERTIFICATE OF TENDERER’S VISIT TO SITE
1. This is to certify that I ___________________________________________________
(Name of bidder or his Representative)
of____________________________________________ (Name of Firm of tendering)
in the company of________________________________________________ (Name of
New Kenya Co-operative Creameries Ltd Representative conducting the visit) visited
the site in connection with the Tender for: - “Proposed Rehabilitation Works of UHT
Stores Sosiani New KCC Factory”.
2. Having previously studied the contract documents, I carefully examined the site.
3. I have made myself familiar with all the local conditions likely to influence the works
and the cost thereof.
4. I further certify that I am satisfied with the description of the work and the explanations
given by the said Representative and that I understand perfectly the work to be done as
specified and implied in the execution of the contract.
Signed by Tenderer
Name of Tenderer: _________________________________________________________
Name of Representative: ____________________________________________________
Date: ________________________________________________________
Signed by New Kenya Co-operative Creameries Ltd (New KCC)
Name of New KCC’s Representative: ________________________________________
Date:_______________________________________________________