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CONSTRUCTION AND REHABILITATION WORKS TENDER DOCUMENTS PROJECT No: CON/ SHAPE/MATHOIR PHU/REHAB/TK/03/2014 WORKS DECSRIPTION: REHABILITATION OF MATHOIR PHERIPHERIAL HEALTH UNIT (PHU) AT MATHOIR CHIEFDOM IN TONKOLILI DISTRICT. LOCATION: MATHOIR COMMUNITY, MATHOIR CHIEFDOMS IN TONKOLILI DISTRICT DATE: 11 th April 2014 CLIENT: MINISTRY OF HEALTH & SANITATION (MoHS). EMPLOYER: CONCERN WORLDIDE pg. i
Transcript of DFID - Concern Worldwide - An International Charity … · Web viewThe Bill of Quantities (BOQ)...
CONSTRUCTION AND REHABILITATION WORKS
TENDER DOCUMENTS
PROJECT No: CON/ SHAPE/MATHOIR PHU/REHAB/TK/03/2014
WORKS DECSRIPTION: REHABILITATION OF MATHOIR PHERIPHERIAL HEALTH UNIT (PHU) AT MATHOIR CHIEFDOM IN TONKOLILI DISTRICT.
LOCATION: MATHOIR COMMUNITY, MATHOIR CHIEFDOMS IN TONKOLILI DISTRICT
DATE: 11th April 2014
CLIENT: MINISTRY OF HEALTH & SANITATION (MoHS).
EMPLOYER: CONCERN WORLDIDE
pg. i
CONTRACTOR: ________________________________________
April 2014
TABLE OF CONTENTS
1.1 Invitation to Bid....................................................................................................................11.2 Letter of Tender (on COMPANY LETTERHEAD)...............................................................21.3 Performance Bank Guarantee (Unconditional) - Option 1............................................31.4 Performance Bond- Option 2.............................................................................................41.5 Bank Guarantee for Advance Payment............................................................................5
SECTION 2: INSTRUCTIONS TO TENDERERS..............................................................................62.1 Tender Procedure................................................................................................................6
2.1.1 Documents.................................................................................................................................... 6
2.1.2 Clarification................................................................................................................................... 6
2.1.3 Addenda or Corrigenda...............................................................................................................6
2.1.4 Suggestions for Modifications....................................................................................................7
2.1.5 Reservations or Qualifications...................................................................................................7
2.1.6 Return of Tenders......................................................................................................................... 7
2.1.7 Cost of Tendering......................................................................................................................... 7
2.2 Method of Tendering...........................................................................................................72.2.1 Realistic Prices.............................................................................................................................. 7
2.2.2 Arithmetic Errors or Addition......................................................................................................8
2.2.3 Schedules and Attachments.......................................................................................................8
2.3 Conditions of Tenders..................................................................................................................8
2.3.1 Acceptance of Tenders................................................................................................................8
2.3.2 Return of Documents...................................................................................................................8
2.4 Qualification of the Tenderers...........................................................................................82.5 General.................................................................................................................................. 92.6 Parties.................................................................................................................................... 92.7 Tendering Documents.........................................................................................................92.8 Letter of Acknowledgement.............................................................................................102.9 Bill of Quantities................................................................................................................. 102.10 Prices.................................................................................................................................... 102.11 Tenders................................................................................................................................ 102.12 Validity of Tenders.............................................................................................................112.13 Errors.................................................................................................................................... 112.14 Tenderers Declaration......................................................................................................112.15 Submissions........................................................................................................................ 122.16 Bid Opening........................................................................................................................ 132.17 Bid or tenders Evaluation Criteria...................................................................................13
2.17.1 Weighting.................................................................................................................................... 13
2.17.2 Scoring "Non price" Criteria....................................................................................................14
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2.17.3 Scoring Prices: Normalized Price Scores...............................................................................15
2.17.4 Calculation of total tender score............................................................................................15
2.17.5 Final tender selections:...........................................................................................................15
SECTION III: LETTER OF AWARD, FORM AND CONDITION OF TENDER......................................163.1 Letter of Award................................................................................................................... 16
3.1.1 LEGAL STATUS........................................................................................................................... 18
3.1.2 CONSTRUCTION TURNOVER....................................................................................................19
3.1.3 DETAILS OF SIMILAR PROJECTS..............................................................................................20
3.1.4 PROJECT PERSONNEL INFORMATION.....................................................................................21
3.1.5 SUBCONTRACTORS................................................................................................................... 22
3.1.6 ANNUAL REPORT AND ACCOUNTS.........................................................................................23
3.1.7. BANKER’S REFERENCES...........................................................................................................24
3.1.8 DETAILS OF CURRENT DISPUTES............................................................................................25
3.1.9 SPECIFICATION OF MATERIALS...............................................................................................26
3.1.10 SPECIFICATION OF TOOLS, EQUIPMENTS AND MACHNINERIES........................................27
SECTION IV: CONTRACT AGREEMENT.......................................................................................284.1 Documents Forming the Agreement..............................................................................284.2 CONDITIONS OF THE AGREEMENT..................................................................................31
4.2.1 DEFINITIONS................................................................................................................................ 31
4.2.2.1 Contractor Obligations........................................................................................314.2.2.2 Employers Duties....................................................................................................................... 31
4.2.3.2 Delays in Commencement:...........................................................................324.2.3.3 Extension of Contract Period:...........................................................................324.2.3.4 Damages for none Completion:.......................................................................32
4.2.3.4 Defect Liability:........................................................................................................................... 32
4.3. CONTROL OF THE WORKS................................................................................................334.3.1 General:........................................................................................................................................ 33
4.3.2 Implementation of the Works:.................................................................................................33
4.3.3 Assignment and Sub-Contracting:..........................................................................................33
4.3.4 Personnel:................................................................................................................................... 33
4.3.5 Exclusion from the Works........................................................................................................33
4.3.6 Other site occupants or users:.................................................................................................33
4.3.7 Employer Instructions:.............................................................................................................34
4.3.8 Documents to be kept in the course of the Works:..............................................................34
4.3.9 Unforeseen Events..................................................................................................................... 34
4.3.10 Variations:.................................................................................................................................... 34
4.3.11 Corrections and Inconsistencies:.............................................................................................34
4.3.12 Temporary Works:...................................................................................................................... 34
4.3.13 Responsibilities for Temporary Works:...................................................................................35
4.4.14 Right to Procure Material or Items used in the Works:........................................................35
4.3.15 Removal of Demolished Material and Cleaning of the Construction Site:.......................35
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4.3.16 As Built Drawings:...................................................................................................................... 35
4.3.17 Record and record drawings....................................................................................................35
4.3.18 Damages to existing Underground Installations...................................................................35
4.3.19 Progress photographs................................................................................................................36
4.4 Time Control:...................................................................................................................... 364.4.1 Work plan/Time Schedules:......................................................................................................36
4.4.2 Variation to the Time Schedule/Program:..............................................................................36
4.4.3 Early Warning:............................................................................................................................. 36
4.4.4 Extension of the Completion Date:.........................................................................................36
4.4.5 Delays Ordered by the Employer:...........................................................................................37
4.4.6 Completion:................................................................................................................................. 37
4.5 Cost Control:....................................................................................................................... 374.5.1 Contract Price:............................................................................................................................ 37
4.5.2 The Contract Maximum Sums:.................................................................................................37
4.5.3 Installations of Items Purchased by the Employer (if applicable).....................................37
4.6 Quality Control:.................................................................................................................. 384.6.1 Work Supervision and Monitoring:..........................................................................................38
4.6.2 Identifying Defects:.................................................................................................................... 38
4.6.3 Notice of Identified Defects:.....................................................................................................38
4.6.4 Quality of Works and Materials:...............................................................................................39
4.6.5 Tests on Building Materials:.....................................................................................................39
4.6.6 Hidden Works:............................................................................................................................. 39
4.6.7 Correction of Defects:................................................................................................................39
4.6.8 Uncorrected Defects:................................................................................................................. 39
4.7 PAYMENTS:.......................................................................................................................... 404.7.1 Modalities of Payment:..............................................................................................................40
4.7.1.1 Payment Schedules:............................................................................................404.7.2 Fixed sum Contract Price..........................................................................................................41
4.7.3 Payment (Work Progress) Certificates:...................................................................................42
4.7.4 Advance Payment:..................................................................................................................... 42
4.7.5 Repayment of the Advance Payment:....................................................................................42
4.7.6 Retentions:.................................................................................................................................. 42
4.7.7 Progress Payments:................................................................................................................... 42
4.7.8 Penultimate Certificate:............................................................................................................43
4.7.9 Final Certificate (Defect Liability Certificate):.......................................................................43
4.7.10 Maximum Price and Price Adjustments:.................................................................................43
4.7.11 Provisional sums:........................................................................................................................ 43
4.8 Compensation Events:......................................................................................................434.8.1. Compensation events not requiring liquidated damages but extension of time: 44
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4.8.2 Compensation events requiring liquidated damages and time extension......................44
4.8.3 Evaluation of extension of time and of damages:................................................................44
4.9 Tax and Duties:.................................................................................................................. 444.9.1 Local Taxes:................................................................................................................................. 44
4.9.2 Import duties:.............................................................................................................................. 44
4.10 Currency:............................................................................................................................. 444.11 Cost of Repairs:.................................................................................................................. 454.12. STATUTORY OBLIGATIONS:.......................................................................................45
4.12.1 Other local obligations applicable in Sierra Leone...............................................................45
4.12.2 Construction permits, licenses for public utilities, fees and charges:..............................46
4.12.3 Prevention of Corruption:..........................................................................................................46
4.13. INJURY, DAMAGE AND INSURANCE:.........................................................................464.13.1 Contractors Risks:...................................................................................................................... 46
4.13.2 Contractors Responsibilities.....................................................................................................46
4.13.3 Injury to or Death of Persons:..................................................................................................47
4.13.4 Damages to Property:................................................................................................................47
4.13.5 Evidence of Insurances:............................................................................................................47
4.14 SECURITY:............................................................................................................................ 484.15 DETERMINATION AND RELEASE FROM PERFORMANCE:.............................................4814.6 SETTLEMENT OF DISPUTES:.............................................................................................49
4.16.1 Requests for Determination:....................................................................................................49
SECTION V: CONTRACT ADDITIONAL INFORMATION................................................................51SECTION VI: TECHNICAL SPECIFICATIONS..............................................................................53PART I – GENERAL MATTERS......................................................................................................53
6.1.1 General Matters......................................................................................................................... 53
6.1.2 Contractor’s Liability................................................................................................................. 53
6.1.3 Contractor’s Obligations..........................................................................................................54
6.1.4 Instructions to Contractor........................................................................................................55
6.1.4.1 Control of Work and Material...........................................................................55PART II – CONCRETE WORKS.....................................................................................................56
6.2 CONCRETE WORK-General...............................................................................................566.2.1 Manufacture of concrete...........................................................................................................58
6.2.1.1 Concrete mixes....................................................................................................586.2.1.2 Class of Concrete.................................................................................................58
6.2.3 Classes of concrete.................................................................................................................... 59
6.2.4 Mix content design..................................................................................................................... 60
6.2.5 Production of concrete..............................................................................................................60
6.2.6 Control of concrete quality...........................................................................................................61
6.2.7 Concrete used in the works shall be to the following qualities..........................................61
6.2.8 Tests on materials...................................................................................................................... 62
6.2.9 Transport and placing of concrete..........................................................................................64
6.2.9.1 Placing concrete – general.................................................................................646.2.9.2 Pumping concrete................................................................................................64
pg. v
6.2.9.3 Compaction of concrete.....................................................................................646.2.10 Joints............................................................................................................................................. 65
6.2.11 Water stops................................................................................................................................. 66
6.2.12 Protection from extremes of weather.....................................................................................66
6.2.13 Reinforcement and pre-stressing............................................................................................67
6.2.14 Formwork..................................................................................................................................... 67
6.2.15 Surface finish............................................................................................................................. 69
6.2.15.1 Loading and testing............................................................................................706.2.16 Pre-cast Concrete....................................................................................................................... 70
PART III – BLOCKWORK..............................................................................................................716.3.1 BLOCKS........................................................................................................................................ 71
6.3.2 BLOCKWORK CONSTRUCTION..................................................................................................71
6.3.2 MORTAR....................................................................................................................................... 72
PART IV – ROOFING.....................................................................................................................726.4.1 ROOFING...................................................................................................................................... 72
6.4.2 PROTECTION................................................................................................................................ 72
PART V – WOODWORK& IRONMONGERY..................................................................................726.5.1 WOODWORK & IRONMONGERY..............................................................................................72
6.5.2 WORKMANSHIP........................................................................................................................... 72
6.5.3 PRESERVATIVE TREATMENT.....................................................................................................73
6.5.4 PROTECT JOINERY....................................................................................................................... 73
6.5.5 CLEARING UP............................................................................................................................... 73
6.5.6 DOOR AND WINDOW FRAMES..................................................................................................73
6.5.7 PLYWOOD..................................................................................................................................... 73
6.5.8 CARCASSING (WALL PLATES, ROOF FRAMING ETC).............................................................73
6.5.9 DEFECTIVE WORK....................................................................................................................... 73
6.5.10 GENERAL...................................................................................................................................... 73
6.5.11 SAMPLES...................................................................................................................................... 74
6.5.12 PROTECTION................................................................................................................................ 74
6.5.13 COMPLETION............................................................................................................................... 74
PART VI- STEELWORK.................................................................................................................746.6 MATERIALS.......................................................................................................................... 74
6.6.1 STEEL........................................................................................................................................... 74
6.6.2 SUNDRIES.................................................................................................................................. 74
6.6.3 WORKMANSHIP........................................................................................................................... 75
6.6.3.1 FABRICATION.......................................................................................................756.6.3.2 WELDING...............................................................................................................756.6.3.3 WORK ON SITE.....................................................................................................756.6.3.4 SITE CONNECTIONS.............................................................................................756.6.3.5 PROTECTION AGAINST CORROSION.................................................................75
PART VII – FINISHING..................................................................................................................76
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6.7.1 MATERIALS................................................................................................................................... 76
6.7.2 SAMPLE PANELS....................................................................................................................... 76
6.7.3 HARDBOARD CEILINGS..............................................................................................................76
PART VIII – PAINTING..................................................................................................................766.7.1 MATERIALS................................................................................................................................... 76
6.8.2 PRIMING...................................................................................................................................... 76
6.8.3 EMULSION PAINT........................................................................................................................ 76
6.8.4 CEMENT PAINT............................................................................................................................ 76
6.8.5 COLOURED TIMBER PRESERVATIVE........................................................................................76
PART IX – DRAINAGE...................................................................................................................766.9.1 GENERAL...................................................................................................................................... 76
6.9.2 MATERIALS.............................................................................................................................. 77
6.9.3 INSTALLATION........................................................................................................................... 77
PART X – PLUMBING INSTALLATION.........................................................................................776.10.1 MATERIALS AND WORKMANSHIP.............................................................................................77
6.10.2 PVC PIPES AND FITTINGS...................................................................................................77
6.10.3 OTHER REQUIREMENTS.............................................................................................................78
PART XI – ELECTRICAL INSTALLATION......................................................................................786.11.1 SCOPE.......................................................................................................................................... 78
6.11.2 STANDARD OF WORKS.............................................................................................................78
6.11.3 SUPPLY......................................................................................................................................... 78
6.11.4 TESTING BY SUPPLY AUTHORITY.............................................................................................78
6.11.5 EARTHING.................................................................................................................................... 79
6.11.6 TESTING MATERAILS AND WORK.............................................................................................79
6.11.7 DISTRIBUTION PANELS..............................................................................................................79
6.11.8 CONDUIT...................................................................................................................................... 79
6.11.9 CABLES......................................................................................................................................... 79
6.11.10 .........................................................................................................................SOCKET OUTLETS79
6.11.11 LIGHT FITTINGS........................................................................................................................ 80
6.11.12 LIGHTNING PROTECTION...........................................................................................................80
6.11.13 HEIGHTS OF OUTLETS................................................................................................................80
6.11.14 ............................................................................................................... OTHER REQUIREMENTS80
6.11.15 PARKING LOTS AND PAVED AREAS.........................................................................................80
SECTION VII: SCOPE OF WORKS.................................................................................................827.1 Descriptions of works........................................................................................................827.2 General Scopes.................................................................................................................. 827.3 Detailed works scopes......................................................................................................82
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7.4 Duration and Maintenance Period..................................................................................86SECTION VIII: WORKPLAN...........................................................................................................87
8.1: Work plan........................................................................................................................... 87SECTION IX: DRAWINGS.................................................................................................................88
9.1: PHU and Staff Quarters Drawings...................................................................................889.2 Lined VIP Latrine drawings...............................................................................................949.3 Septic Tank Drawings......................................................................................................1009.4: Rain Water havesting Tank Drawings..........................................................................103
SECTION X: BILLS OF QUANTITIES (BoQ)......................................................................................107Table 17: Bills of Quantities for Mathoir Health Centre Rehabilitation..........................................107ANNEX 1: The Programme Participant Protection Policy & Code of Conduct................................131
pg. viii
SECTION I: INVITATION TO BID AND LETTER OF TENDER
1.1 Invitation to Bid
Date: 11th April 2014
To: ________________________________ (COMPANY NAME)
Dear Sir,
CONTRACT: REHABILITATION OF MATHOIR PHU AT YONI CHIEFDOM IN TONKOLILI DISTRICT (CON/ SHAPE/MATHOIR PHU/REHAB/TK/03/2014).
Concern Worldwide invites you to submit bid(s) for the execution and completion of the above work together with all necessary ancillary works in connection therewith in competition with other contractors and in accordance with the enclosed Bid package. The contents of the Bid package is detailed in the Instructions to Bidders and should be checked and a letter of acknowledgement returned for receipt by Concern between the Friday the 11th and Monday the 21st April 2014_confirming your intention to bid; otherwise the bid document should be returned to Concern Worldwide. Refer to the enclosed Instructions to Bidders for guidance in response.
During the bid period, all communications should be addressed in the first instance to Charles Omona, Concern Engineering Coordinator, (Tel: +232(0)76 441 394), Concern’s Engineering Coordinator that is responsible for the issue of this invitation.
Bids will be assessed in accordance with good commercial practice using evaluation criteria set out in section 2.12 of instructions to Bidders.
Bidders should note that any reservations they might have with any part of the Contract documents should be specified in their bid and submitted at the same time the bids are received. Bidders will be deemed to have accepted all the conditions as laid down in the documents and shall allow in their bid for all necessary costs to meet these conditions.
The bids will be appraised by representatives of Concern and the Client will be informed of the appraisal and aspects of the bid may be disclosed in confidence to Client.
Bids shall be valid for a period of 30 days after Bid opening and should be delivered in a sealed envelope to The Engineering coordinator, Concern Worldwide, 23A Cantonment road, off Kingharman road, Freetown on or before Wednesday the 30th April 2014 by 1300hours pm.
The bid opening will be conducted at same address on Wednesday 30th April 2014 at 1400hours in the presence of the Bidders who wish to attend and a representative of the Client. Late bids submission WILL NOT be accepted. Bids received after the due time and date will be returned unopened.
All information contained in this package should be treated as confidential and you are required to limit dissemination on a need-to-know basis.
Yours sincerely;
Engineering Coordinator
pg. 1
Concern Worldwide-Sierra LeonePhone: +232 (0) 76 441 394.Email: [email protected].
1.2 Letter of Tender (on COMPANY LETTERHEAD)
To: Concern Worldwide23A Cantonment road off Kingarman roadP.M.B 248Freetown, Sierra Leone
Dear Sir/Madam;
Project No: CON/ SHAPE/MATHOIR PHU/REHAB/TK/03/2014
I / we the undersigned having read the Specifications, Conditions of contract and Bills of Quantities and appendixes delivered to me / us for the Drilling and Construction of the above works and having examined the design drawings referred to therein, do hereby offer to execute the whole of the works described for the sum of Le _______________( ……………………………………………………………………………………………………………………………………Leones) based on a FIRM RATES BASIS, which is not subject to variation in labour and materials prices.
If my/our bid is accepted, I/we hereby undertake to commence work within Two (02) weeks of signing the Form of Agreement and to complete the work in _____________________________days (………………….weeks) from the start date and hereby agree that 0.05% of the total contract Sum per day has been examined and found reasonable for Liquidated and Ascertained Damages and agree to its application to this contract.
I/we further agree that this bid remain open for consideration for Thirty (30) calendar days from the date of Bid Submission.
I/we undertake, in the event of your acceptance of this offer, to execute with you the Form of Agreement and to provide to you within five (5) days of the signing of the Agreement a Form of Performance Bond incorporating all provisions of the Sample Form of Bond in the Bidding Documents and a Bank Guarantee for Advance Payment.
Signature and seal of Contractor: _________________________________________________pg. 2
Registered Address: _________________________________________________
Signature of Witness: ________________________________________________
Occupation of Witness: _________________________________________________
1.3 Performance Bank Guarantee (Unconditional) - Option 1
To: Concern Worldwide23A Cantonment road off Kingarman roadP.M.B 248Freetown, Sierra Leone
Whereas [ ---------------------------------------------------------------------- ], (hereinafter called “the Contractor”) has undertaken, in pursuance of contract No. ---------------------------------------------------, dated the -----------day of ----------------- 2014 to execute the rehabilitation or construction of ----------------------------------------------------------------------------------------- (hereinafter called “the Contract”);
And whereas it has been stipulated by you in the said Contract that the Contractor shall furnish you with a Bank Guarantee by a recognized bank for the sum specified therein as security for compliance with his obligations in accordance with the contract;
And whereas we have agreed to give the Contractor such a Bank Guarantee;
Now therefore we hereby affirm that we are the Guarantor and responsible to you, on behalf of the Contractor, up to a total of Le [INSERT THE VALUE OF 10% OF THE CONTRACT] (______million,_______ hundred and______thousand,_______ hundred and______ Leones), such sum being payable in the types and proportions of currencies in which the contract Price is payable, and we undertake to pay you, upon your first written demand and without cavil or argument, any sum or sums within the limits of Le[INSERT THE VALUE OF 10% OF THE CONTRACT] (_______million, _______ hundred and _______thousand,_______ hundred and _______Leones), as aforesaid without your needing to prove or to show grounds or reasons for your demand for the sum specified therein.
We hereby waive the necessity of your demanding the said debt from the Contractor before presenting us with the demand.
pg. 3
We further agree that no change or addition to or other modification of the terms of the contract or of the Works to be performed there under or of any of the contract documents which may be made between you and the Contractor shall in any way release us from any liability under this Guarantee, and we hereby waive notice of any such change, addition, or modification.
This Guarantee shall be valid until the twenty-eighth (28) days from the date of issue of the Certificate of Completion.
Signature and seal of the Guarantor:……………………………………………………………………………
Name of Bank:…………………………………………………………………………………………………….
Address:……………………………………………………………………………………………………………
Date: ………………………………………………………………………………………………………………..
pg. 4
1.4 Performance Bond- Option 2
By this bond [___________________________________________], as principal (hereinafter called ‘the Contractor’) and [___________________________________________________ ] as Surety (hereinafter called “the Surety”), are held and firmly bound unto Concern Worldwide Sierra Leone as Obligee (hereinafter called “ the Employer”) in the amount of Le[INSERT THE VALUE OF 10% OF THE CONTRACT] (_______ million,_______ hundred and _______ thousand,_______ hundred and________ Leones) for payment of which sum, well and truly to be made, the Contractor, and the Surety bind themselves, their successors and assigns, jointly and severally, firmly be these presents.
Whereas the Contractor has entered into a written contract agreement with the Employer, dated the _____day of ________________2014, for the construction of _____________________________________________________________________ (Project No:______________________________________) in accordance with the plans and specifications and amendments thereto, to the extent herein provided for, are by reference made part hereof and are hereinafter referred to as the Contract.
Now, therefore, the Condition of this obligation is such that, if the Contractor shall promptly and faithfully perform the said Contract (including any amendments thereto) then this obligation shall be null and void; otherwise it shall remain in full force and effect.
Whenever Contractor, shall be, and declared by Employer to be, in default under the Contract, the Employer having performed the Employer’s obligations there under, the Surety may promptly remedy the default, or shall promptly:
pg. 5
1.5 Bank Guarantee for Advance Payment.
Concern Worldwide23A Cantonment road off Kingarman roadP.M.B 248Freetown, Sierra Leone
1. In consideration of Concern Worldwide Sierra Leone making a payment of Le[INSERT THE VALUE OF 20% OF THE CONTRACT] (______million,______ hundred and ______ thousand, ______hundred and______ Leones) (“the Advance Payment”) to [INSERT: NAME AND ADDRESS OF CONTRACTOR]__________________________________________________________________________________________________________________________________] (“the Contractor”) under the contract dated the___________day of____________2014 concluded between the Contractor and Concern (“the Contract”), we [INSERTNAME AND ADDRESS OF BANK]________________________________________________________ ________________________________________________________________________] (“the Bank”) hereby irrevocably give you our guarantee and undertake to pay you any amount or amounts not exceeding in total a maximum of Le[INSERT THE VALUE OF 20% OF THE CONTRACT] (______ million,______ hundred and______ thousand,______ hundred and______ Leones), on receipt of your first demand in writing which shall be accompanied by a certificate signed by Concern Worldwide that the Contractor has failed to perform all or part of the Contract.
2. This Guarantee shall become effective automatically on payment of the Advance Payment of Le [INSERT THE VALUE OF 20% OF THE CONTRACT] (______million, ______ hundred and______ thousand,_______ hundred and_______ Leones) by or on behalf of Concern Worldwide.
3. The Bank shall not hold or otherwise allow or permit the Advance Payment referred to in paragraph 1 above to be used as collateral directly or indirectly in respect of this Guarantee nor shall the Bank restrict the Contractor’s right to draw on the Advance Payment or sum equal to the Advance Payment for the purposes of the Contract.
4. This Guarantee shall remain valid and in place until the Advance Payment referred to in paragraph (1) has been fully been indirectly repaid by execution of the contract works to a similar equivalent monetary value.
5. The Bank shall not be discharged or released from this Guarantee by any arrangement made between or on behalf of the Concern Worldwide and the Contractor or by any alteration in the obligations imposed upon the Contractor by the Contract or by any forbearance granted by or on behalf of the Concern Worldwide to the Contractor as to payment, time, performance or otherwise and this notwithstanding that such arrangement, alteration or forbearance may have been made or granted without the Bank’s knowledge or ascent.
6. This Guarantee shall be governed by and construed in accordance with the laws of Sierra Leone.
pg. 6
Signed for and on behalf of
Name of bank: …………………………………………………………………………………………...
Address: ………………………………………………………………………………………….………
Date:………………………………………………………………………………………….…………..
SECTION 2: INSTRUCTIONS TO TENDERERS
2.1 Tender Procedure
2.1.1 Documents
Persons invited to tender shall hereinafter be referred to as "Tenderers".
The following documents will be made available to Contractors for tendering purposes:
Invitation to Tender and Letter of Tender. Instructions to Tenderers Form of Tender and Condition of Tender. Draft contract agreement. Technical Specifications Designs drawings Un priced Bills of Quantities Work plan Template.
The above documents shall hereinafter be called "The Tender Documents".
Tenderers shall check to their satisfaction that all documents are completed and the submission of a Tender shall be accepted as confirmation that the Tenderer has been in possession of all documents and that his Tender is based on these documents.
2.1.2 Clarification
Any queries on or requests for clarification of any Tender document shall be submitted in writing (e-mail accepted). All clarifications will be made by Concern in writing and such clarifications will be notified to all Tenderers. All clarifications shall be attached to all Tender Documents, when the documents are submitted, all will be considered as part of the Tender Documents.
Queries should be addressed to:
pg. 7
Engineering CoordinatorConcern Sierra Leonee-mail: [email protected]
CC.Asistan Country director Programe Concern Sierra Leoneemail: [email protected]
2.1.3 Addenda or Corrigenda
Prior to the date for the submission of Tenders, the Employer may issue Addenda or Corrigenda to clarify, modify, or add to the Tender Documents. A copy of each Addendum or Corrigendum will be issued to every Tenderer and shall become part of the Tender Documents; receipt thereof shall be promptly acknowledged by the Tenderer in writing.
2.1.4 Suggestions for Modifications
If the Tenderer considers that he can offer any advantage by any modification to the Conditions of Contract, the Specifications or the Works specified, he may submit with his Tender a document giving details of such suggested modifications. Each alternative offer shall contain all necessary technical and financial information clearly indicating the cost implications to the Employer. The Employer reserves the right to accept or reject any alternative offer submitted. However, any such offer will only be considered, if it accompanies a bona fide Tender, which itself constitutes a fully priced alternative Tender.
2.1.5 Reservations or Qualifications
Subject to Condition 2.1.4 above, no Tender, which incorporates reservations or qualifications, will be regarded as valid, unless it is considered by the Employer that the reservations or qualifications are warranted by special circumstances.
2.1.6 Return of Tenders
Tenders must be addressed:
Concern Worldwide23A Cantonment road off Kingarman roadP.M.B 248Freetown, Sierra Leone.
pg. 8
Tenders must be enclosed in sealed envelopes, endorsed on the outside with a description and delivered to the above address by 1300 hours on or before Wednesday the 30th April 2014. Each tender will be registered into a book and given a specific reference number. Tenders will then be placed into a locked tender box until the opening date.
Tenders that are not received by 1300 hours on the closing date will be treated as late tenders and so the Employer reserves the right to set aside such Tender.
2.1.7 Cost of Tendering
There will be no reimbursement of any costs incurred by Tenderers in preparing and submitting this Tender.
2.2 Method of Tendering
2.2.1 Realistic Prices
It is expected that all items in Bill of Quantities are realistically priced. Payments will be made based on the total priced bills of quantities, according to the payment schedules within the agreed contract sum.
A nil price or an omission is not considered a realistic price. Should a tender fails to comply with this requirement, the Employer reserves the right to set aside the Tender
2.2.2 Arithmetic Errors or Addition
In the event of there being any errors of extension or addition in the priced Bill of Quantities, they shall be corrected, the rates being taken as correct.
In such a case, the effect will be that the total amount of the Tender will be altered so that this amount agrees with the amount arrived at after the errors have been corrected.
2.2.3 Schedules and Attachments
The Tenderer shall complete all schedules and attachments, which shall be submitted as part of the Tender Documents. Failure to do so may render the Tender liable to rejection without further consideration.
pg. 9
2.3 Conditions of Tenders
2.3.1 Acceptance of Tenders
The Employer does not bind himself to accept the lowest or any Tender in whole or in part thereof. Should any erasure, omission or addition be made to the Form or Tender, or should any particulars not be completed in every respect, the Tender may be considered invalid. The Employer reserves the right to cancel the tendering process and reject all Tenders at any time prior to award of the Contract without rendering the Employer liable to neither Tenders, nor be responsible for or pay for any expenses or losses incurred by the Tenderer in the preparation of his Tender.
2.3.2 Return of Documents
This document together with documents listed in 2.1.1 above shall be returned complete and intact with the Tender. Otherwise, the Tender may be rejected.
2.4 Qualification of the Tenderers
All Tenderers shall include the following information and documents with their tenders:
(a) Copies of original documents defining the constitution or legal status, place of registration, and principal place of business, location of principal office (Street/Plot No.); names of shareholders (attach copy of extract from company memorandum); current business license No. (Attach copy); class of civil works registration by Contractors Registration Board (attach copy of certificate of registration); written power of attorney of the signatory of the Tender to commit the Tenderer;
(b) Total annual turnover expressed as total volume of construction work performed in each of the last five years;
(c) Experience in works of a similar nature with completion certificates as evidence and volume for each of the last five years, and details of work in hand and contractual commitments; Employers may be contacted for further information on those contracts;
(d) Photographs and lists of major items of construction tools, equipment and machineries proposed to carry out the Contract;
(e) Qualifications and experience of key site management and technical personnel proposed 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, i.e., evidence of access to line(s) of credit and availability of other financial resources (attach copies of the last three months Bank statements);
(i) Information regarding any current litigation in which the Tender is involved, the parties concerned, and disputed amount; and
pg. 10
(j) A statement establishing that the Tenderer and his subcontractors are not associated, nor have been associated in the past, directly or indirectly, with the Employer or any other entity having prepared the design, Specification, and other Tender Documents for the project.
2.5 General
These instructions set out the requirements for the preparation of Tender in a form acceptable to the Concern Sierra Leone Country Director and Health Programme under the SHAPE PROJECT. They should be read in conjunction with information specific to the Provisions contained in the Invitation to Tender and accompanying documents, e.g. pricing basis, date by which the Tender should be received, period of validity, Tender evaluation criteria etc.
2.6 Parties
Table1: Party to the Contract.
Financier: Concern Worldwide
Client: Ministry of Health and Sanitation (MoHS).
Employer: Concern Worldwide
Contract Manager: Engineering Coordinator
Works Supervisor: Construction Engineer
2.7 Tendering Documents
The Tenderer will be supplied with one set of the Tender package which consists of the following:
i. Covering Letter (Invitation for Tenders) and Letter of Tender.ii. Instructions to Tenderers (this document)iii. Letter of Award and Draft Form of Agreement iv. Conditions of Contractv. Contract Additional Informationvi. Technical Specificationsvii. Work plan template.viii. Drawings.ix. Un priced Bills of Quantities (BOQ)
pg. 11
2.8 Letter of Acknowledgement
A Letter of Acknowledgement (typed on Company headed paper and incorporated within a more general letter if desired) must be received by the Employer by Monday the 21st April 2014, either:
- confirming the intention to bid by the Proposal Due DateOr- declining to bid and returning all proposal documentation.
It is essential for audit purposes that the Letter of Acknowledgement is returned in either circumstance, bearing an authorized signature and company identification. Oral confirmation is not sufficient.
2.9 Bill of Quantities
The Tenderer shall check that none of the pages of the Bill of Quantities (BoQs) are missing or duplicated and that there are no parts of the document that are indistinct. Should the Tenderer find any discrepancy, he shall notify the Employer.
In circumstances, where there are additionally separate detailed bills of Quantities, for specific aspects of the work components, the sum totals from the sub-bills of Quantities must be transferred to the corresponding line items in the main Bills of Quantities, in order to form part of the total tender prices, as the case may require from time to time.
No alteration should be made to the text of the Bill of Quantities, unless expressly instructed in writing by the Employer.
2.10 Prices
Prices or rates should be entered against each item in the Bill of Quantities and any item not priced shall be deemed to have been allowed for by the Contractor elsewhere in the Bill. Unit rates shall include materials, labour, and 5% withholding government tax and any overheads or profit margin that the Company deems appropriate.
In the event of claims for loss and expense, no claims can be made in respect of items not priced in the Preliminary item in the BOQ and the Contractor will be required to comply where applicable with the provisions of the un-priced item.
All rates and amounts inserted in the Bill shall be in Leones.
The Contract is duty paid (no waiver on Customs duty shall be granted). As stated above, the bid or tender price is to be inclusive of the 5% withholding tax, which will be withheld and paid by Employer finance department to the GoSL1 Revenue Service on behalf of the Contractor.
1 GoSL Government of Sierra Leone.
pg. 12
2.11 Tenders
The Tenders or Bids submitted by the Bidder or Tenderers should consist of:
i. One copy of the Letter of Tender, which should be completed in full and contain the Bid/tender Price in numbers and words. If the Contractor fails to fill out any parts of the Bid/tender, it shall be considered to be invalid and disregarded.
ii. One copy of the Bill of Quantities, with all rates and amounts inserted.iii. Realistic work plan presented in format contained in this documents.iv. Completed conditions of tender forms contained in this documents;
including lists of tenderers key personal responsible for delivering the project and their CVs.
v. Copies of the most recent Bank statement for the last three Months.vi. Photographs and lists of major tools, equipment and machinery required
for the works.
All drawings and un-priced Bills of Quantities are supplied to the Tenderer and form part of this bid document.
All of the above should be bonded and enclosed in a separate sealed envelope, which should be marked to indicate the identity of the Bidder/Tenderer. The Tenderer is advised that:
(a) Any tender not containing the documents mentioned above will be considered invalid and disregarded.
(b) The completed tender should be signed by a Principal of the Firm or a fully authorized agent and the full name and address of the tenderer should be stamped or written in the space provided.
(c) All entries in the tendering Documents by the Tenderer must be in ink and any amendment to these entries should be initialed by the Tenderer in ink.
(d) The Employer is not bound to accept the lowest of any tender and will accept no liability for any costs incurred in the preparation and submission of tenders.
(e) The tenderer is to submit his tender on a firm rates basis. Increases in the costs of labour and materials shall not be allowed.
2.12 Validity of Tenders
Tenders shall remain valid for a period of 30 days, after the date of bid opening specified.
2.13 Errors
The priced Bill of Quantities submitted by any Bidder shall be checked for arithmetical errors and for what might be considered unreasonable rates during the evaluation. Where errors are identified one or more of the following steps may be taken:
(a) If any rates are considered to be unrealistic or unreasonable they may be altered by mutual agreement, provided that no alteration shall be made in the total amount of the Bid.
pg. 13
(b) If any arithmetical errors are detected in an otherwise acceptable bid, and the Bidder, on being so notified, is prepared to confirm his bid and if the tenderer is subsequently awarded the contract, then the Bid shall be altered to reflect the difference.
(c) The Tenderer is reminded that it is entirely its responsibility to ensure the accuracy of the bid.
(d) No alteration will be made to the bid after its submission on the grounds of any arithmetical errors subsequently discovered except as provided above.
2.14 Tenderers Declaration.
In response to your letter of invitation to tender for the above contract, we/I the undersigned, hereby declare that:
i. We have examined and accept in full the content of the tender document for invitation to tender (Including Concern World wide’s Programme Participant Protection Policy) No. CON/ SHAPE/MATHOIR PHU/REHAB/TK/03/2014, we hereby accept its provisions in their entirety, without reservation or restriction.
ii. We offer to deliver, in accordance with the terms of the tender document and the conditions and time limits laid down, without reserve or restriction the following:
a. TOTAL PRICES FOR REHABILITATION OF MATHOIR PHU, STAFFS QUARTERS, POST NATAL UNIT EXTENSIONS, SEPTIC TANKS & SOAKAWAYS, NEW LINED VIP LATRINE CONSTRUCTION, RAIN WATER HARVESTING SYSTEMS, INCINERATOR CONSTRUCTION AND EXTERNAL DRAINAGE WORKS.
Le……………………………………………..(Amount in figures) [………………………
…………………………………………………………………………………………………
……………………………………………………………………Leones] (Amount in words)
This tender is valid for a period of 30 days from the final date for submission of tenders.
iii. We will inform Concern Worldwide immediately if there is any change in the above circumstances at any stage during the implementation of the contract. We also fully recognize and accept that any inaccurate or incomplete information deliberately provided in this application may result in our exclusion from this and other contracts of Concern Worldwide.
iv. We note that Concern Worldwide is not bound to proceed with this invitation to tender and that it reserves the right to award only part of the contract.
pg. 14
v. We agree to adhere to all of the terms and conditions of Concern Worldwide as provided in the tender document.
vi. We confirm that we adhere to Concern World wide’s Code of Conduct for Suppliers, summarized as follows;
Employment is freely chosen. The rights of staff to freedom of association and to collective bargaining
are respected. Working conditions are safe and hygienic. No exploitation of children. Wages paid are adequate in accordance with acceptable to market labour
rates. Working hours are not excessive. No discrimination is practiced. Regular employment is provided. No harsh or inhumane treatment of staff is allowed.
2.15 Submissions.
Special Instructions: Tenders should be submitted in clearly sealed and leveled envelope to read.
‘Bid for the: Tender for rehabilitation of Mathoir Peripheral Health Centre (PHU) and Staffs quarters; including all the work components specified in the tender documents at Mathoir chiefdoms, in Tonkolili District.
All the bills of quantities and tender price for the works tendered for, should be competed and submitted as per the instruction above.
Sealed Tenders and Priced Bills of Quantities are to be submitted to: CONCERN WORLDWIDE, 23A Cantonment Road, Off Kingharman Freetown and clearly marked.
Company Name: __________________________________________________________________’
Tenders should be received not later than 1300hours on Wednesday the 30 th
April 2014.
2.16 Bid Opening
Tenders will be opened in public at 1400hours on Wednesday the 30 th April 2014 at Concern Head Office (address above), in the presence of the Tenderers or their accredited representative, Concern and a representative from the Ministry of Health and Sanitation may be invited to attend the opening session. .
pg. 15
2.17 Bid or tenders Evaluation Criteria
The following criteria will be taken into account in the evaluation of tenders after arithmetical errors checks computations have been made to the submitted Bid.
i. Preliminary and general evaluation:
a. The tenders are realistic in addressing the requirements of the Bidding Documents (with particular reference to the proposed Construction Period, Unit Rates for items of work and the Bid Price).
b. Any reservations or qualifications on the draft Contract documents.c. Knowledge and or familiarity with the project area. d. The Tenders are arranged generally in order.e. Recent successful completion of similar contracts, evidenced by
completion certificates.f. Capacity to carry out the works (Key personnel with the right skills
and possession of the right tools, equipment and Machineries required for the works).
g. Realistic work plan.h. Attached copies of recent bank statements for the last three
months.i. Letter of acknowledgement.j. Companies profiles.
In addition, rather than automatically accepting the lowest price, the bid evaluation process applies weighting for skills, quality, experience and previous performance in a manner to ensure value for money.
All relevant information requested in the bid documents and provided with the bid is used in the bid evaluation.
The criteria and weightings used are selected so that the most appropriate criteria are used to review the tenders. The best value for money outcome is the one that reflects the requirements of this particular project.
Due to the highly technical or critical nature of the project, emphasis will be placed on the weightings of the total of the non-price criteria and the sub-attributes of technical skills and methodology.
2.17.1 Weighting
When assigning weights, the Engineering Coordinator will ensure that:
• All selection criteria to be used are assigned a weight;
• Criteria weightings are to be within the range outlined below; and
• The sum of all weights totals 100.
The weighting range for Selection Criteria will be within the following:
pg. 16
Table 2: Selection Criteria for Bid Evaluation.
Criteria Category
Percentages (%)
Criteria (options) Percentage (%) Score for each Criteria for the evaluation.
Non-Price
40% Relevant Experience2 5%Past performance3 10%Technical Skills4 15%Resources5 (Equipment and Facilities)
5%Work Methodology6. 5%
Price 60% Price7 60%
2.17.2 Scoring "Non price" Criteria
The evaluation procedures are as follows:
1. Add the individual scores for each non-price criterion. Each criterion is given a point score from 0 (poor) to 10 (excellent) in increments of 0.5.
2. Weigh the individual scores for each non-price criteria, according to the pre-determined weightings. The weighted score is calculated by multiplying the score by the weight.
3. The sum of non-price scores for each bid is then normalized to 10. Normalizing is a transformation applied uniformly to each element in a set of data, so that the set has some statistical property.
4. The following formula is applied to normalize the non-price scores:= Sum of non-price score for each bid
x 10 Highest sum of non-price scores
2 Relevant Experience refers to; description and relevance to the bid works; role of the bidder; project cost; and Duration of project.
•3 Past Performance refers to; project name; Employer’s project manager (name and phone/fax numbers); quality standards, target performance levels; bid price, variations and final cost; completion date and extensions of time granted.
4 Technical skills refer to; proposed project team names; function; technical expertise; and CV’s to be provided.
5 Resources information includes the following: specialist equipment; labour, by trade skills; and Facilities.
6 Work methodology includes the following: program of works; key performance indicators; division of works into subcontracts; innovative procedures to be used; reporting and recording systems; and Quality work Plan.
7 Price depending on the contract, this could include: fixed capital cost; variable bid costs during the contract period; special adjustments during the contract period; maintenance costs; and Operating costs.
pg. 17
5. This score is then adjusted for the total weighting of all the non-price criteria to obtain the overall weighted non-price score.
2.17.3 Scoring Prices: Normalized Price Scores
Normalized price score = Lowest bid price x 10 Bid price
When weighting non-price evaluation criteria, Concern Engineering Coordinator shall ensure that any difference in scores between a good submission and a satisfactory submission does not overshadow a substantial price difference. Assessment of tender’s submissions with a substantial price difference must ultimately justify their selection in terms of value for money, if the higher priced bid submission gets the higher score.
2.17.4 Calculation of total tender score
The total score for each bid is calculated from the expression;
Total scores = [Total normalized weighted price + Total Normalized Non-price]
The top three best tenderers with the highest total scores are pre-selected for the final selection.
2.17.5 Final tender selections:
In order to arrive at the final decision of the best tenderers, the following aspects are further scrutinized:
a. Previous Work Quality and Performances; including experience with Concern and other INGOs
b. Timely completion of previous works.c. Bid price variance and their significance (Analysis of the realism of the
pricing of individual items in the priced Bills of Quantities).d. Reference checks from previous Employers, about the Contractors
reputations; Reliability and organizational capacity etc., based on evidence of authentic completion certificates.
pg. 18
SECTION III: LETTER OF AWARD, FORM AND CONDITION OF TENDER
3.1 Letter of Award
TO :________( company name)__________________
Dear Sir/Madam,
Re: AWARDING OF THE CONTRACT FOR REHABILITATION WORKS AT MATHOIR PHU AND STAFFS QUARTERS; INCLUDING ALL SPECIFIED
WORK COMPONENTS AT MATHOIR CHIEFDOM IN TONKOLILI DISTRICT (CON / SHAPE/MATHOIR PHU/TK/03/2014)
You are notified of Concern intention to award the contract for the rehabilitation of Mathoir PHU and Staffs quarters at Yoni chiefdoms; in Tonkolili District to your company, subject to fulfilment of the pre-requisite requirements; prior to commencement of work on site. The Contract Value is Le ………………….. (………………………………………………………………………………………………………………………………………………………………………………Leones Only), according to the agreed or corrected Bid offer, against your bid offer unit rates.
You are further informed that the method of payment will be by bank transfer .In that respect, you are requested to provide an active bank account details for the purpose of processing the advance payment of Twenty Percent (20%), which is equivalent to Le………………………… (……………………………………………………………………………………………………………………..Leones Only).This will apply to all the future invoices submitted for payment under this contract.
The purpose of this letter is to request you to come to Concern Worldwide office in Freetown on …………………………. day of ………………., 2014 at 1000hours for signing of the contract Agreement with your official stamp. In addition, your attention is further drawn to the following pre-requisite provisions that your firm must fulfil, prior to approval and commencement of work on site:Clause 4.14
Provision of performance bond to the sum of 10% of the total value of works, amounting to: Le ……………………… (……………………………………………………………………………………….. Six Leones only); and the institution providing such a bond will be subject to the approval of Concern.
Clause 4.7.4.1
Provision of Advance Guarantee to a sum of 20% of total value of works amounting to: Le ……………………………….. (………………………………………………………………………Leones Only) and the institution providing such a bond will be subject to the approval of Concern.
Clause 8.1 Provision of a revised and realistic work Plan in a format as set
pg. 19
out in the bid document (Section VIII), subject to the approval of Concern.
Clause 4.3.4
Sub mission of name of Contractor’s representative who will be directly responsible for the management of the contract and must be approved by Concern.
Clause 4.13.3
Provision of third party insurance in the sole name of the Contractor.
Clause 4.13.5
Provision of workers’ injury, accidents, damage to private property, death and disability insurance in the name of Contractor.
You are reminded that all the above must be provided before the signing of the contract as stipulated in the Bid document and failure to do so will result in the Contract being awarded to an alternative contractor. You should also be reminded that the above documents must be submitted within sufficient time for review and approval by Concern, prior to contract signing.
Please note that Concern reserves the right to vary both the scope of works and the Bills of Quantities and any variation shall be approved through a variation order. In addition Concern will advise you in writing of the person to be appointed as the Employer’s representative.
In line with the objectives of the SHAPE project, you will be expected to recruit or engage local labour forces as much it’s practicable, without prejudice to your output and quality of workmanship.
I look forward to working with your company in the spirit of cooperation and professionalism.
Yours sincerely;
Fiona Mclysaght Country DirectorConcern Worldwide-Sierra LeonePhone: +232 (0) 76 744 346.Email: [email protected].
pg. 20
3.1 SCHEDULES OF SUPPLEMENTARY INFORMATION.
3.1.1 LEGAL STATUS.
Table 3: Legal Status
For Individual Tenderers or Individual Members of Joint Ventures
Constitution or Legal Status of Tenderer:(Attach copy)
Place of Registration:
Principle place of Business:
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pg. 21
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pg. 22
3.1.2 CONSTRUCTION TURNOVER.
Table 4: Construction Turnover.
Total annual volume of construction work executed in last five years
Value (State Currency) Construction Work Expressed as Percentage of Total-Turn over
2013.........................................................
..
2012.........................................................
...
2011.........................................................
..
2010.........................................................
...
2009.........................................................
..
Additional Information:
2013............................................................
2012............................................................
2011...........................................................
2010............................................................
2009...........................................................
Additional Information
pg. 23
pg. 24
3.1.3 DETAILS OF SIMILAR PROJECTS.
Table 5: Similar Projects as main Contractor.
Work of a similar nature carried out as Main Contractor over last five years. The Values shall be in the same currency as used in Table 4 Above.
Project Nameand Country Name of
Employer
Type of Work Performed and Year of Completion Value of Contract
(Attach additional details as appropriate)
pg. 25
3.1.4 PROJECT PERSONNEL INFORMATION.
Table 6: Proposed Personnel for Construction works.
Curriculum Vitae of key personnel proposed for administration and execution of the Contract.
Position NameYears of Experience (general)
Years of Experience in Proposed Position
(Attach CV’s)
pg. 26
3.1.5 SUBCONTRACTORS.
Table 7: Subcontracting works.
Elements of work to be Subcontracted together with names of Companies involved.
Sections of the Works
Value of Subcontract Subcontractor(name and address)
Experience in Similar Work
(Attach additional details as appropriate)
pg. 27
3.1.6 ANNUAL REPORT AND ACCOUNTS.
Table 8: Financial overview for the 5 past years.
Financial reports for the last five years including, Profit and Loss Accounts, etc. attach copies.
TURNOVER PROFIT/LOSS
2013 2013
2012 2012
2011 2011
2010 2010
2009 2009
pg. 28
pg. 29
3.1.7. BANKER’S REFERENCES.
Table 9: Tenderers Bankers Information.
For Individual Tenderers or Individual Members of Joint Ventures
Name
Address
Telephone No (s).
Fax Nos.
Account Name:
Account No:
BBAN No:
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………………………………………………………………………………
pg. 30
3.1.8 DETAILS OF CURRENT DISPUTES.
Table 10: Current Litigation Information.
Information on current litigation in which the Tenderer is involved
Other Party (ies) Cause of Dispute Amount Involved
pg. 31
3.1.9 SPECIFICATION OF MATERIALS.
Table11: Material Specifications.
Information on the nature of materials to be used and specification, in addition to the details listed in the Specification of the Tender Documents
Material Name of Supplier Detailed Specification
pg. 32
(Attach additional details as appropriate)
3.1.10 SPECIFICATION OF TOOLS, EQUIPMENTS AND MACHNINERIES
Table12: Tools, equipment and Machineries Specifications.
Information on the type, make and models of equipment and machineries to be used and specification, in addition to the details listed in the Specification of the Tender Documents
List of Tools, Equipment and Machineries
Make/Models Detailed Specification
pg. 33
(Attach photographs of owned equipment and Machineries as appropriate)
pg. 34
SECTION IV: CONTRACT AGREEMENT
This Agreement is a contract for the construction and rehabilitation of Mathoir PHU, at Yoni chiefdom in Tonkolili District, in accordance with the documents forming this agreement.
This agreement is made on the ……………………… day of ……………………… 2014,
BETWEEN
CONCERN WORLDWIDE (hereinafter called the Employer)
AND
…………………………………………………………………………………………..(Hereinafter called the Contractor)
WHEREAS
Recitals:
1st The Employer wishes the following works:
Rehabilitation of Mathoir Peripheral Unit (PHU) works includes the following major components;
i. Main buildingsii. Staff quarters duplex, Kitchen, Toilets and Washrooms.iii. Septic tanks & soak away pits constructions at staff quartersiv. New Lined VIP latrine.v. Rain Water Harvesting Systems for Hand Washing Facility at the latrinevi. New Incinerator and external drainage works.vii. Extension of Post-Natal unit; including external drainage worksviii. Extension of dot/Laboratory room
To be carried out on behalf of EU& IRISH AID (hereinafter called the Donor) under SHAPE project of the Health Programme under the management and supervision by the Employer, and has caused the following documents to be prepared and attached to this Agreement:
4.1 Documents Forming the Agreement
i. The Form of Agreementii. The Letter of Awardiii. The Conditions of Contract
pg. 35
iv. The Contract Data v. The technical Specificationsvi. The Corrected priced Bill of Quantitiesvii. The Drawingsviii. The Working Planix. The Programme Participant Protection Policy
1st The Bills of Quantities forming part of the above documents have been reviewed and corrected for arithmetic errors by the Employer or the Employer’s representative, as an accepted part of this Agreement.
To facilitate the Contractor on making the cost estimate, the Employer provided a Bill of Quantity in draft form. The Technical Descriptions, construction details (Drawings) and description of Works has been submitted when signing this contract.
The Contractor has measured and entered the quantities in the Bill of Quantities as necessary, on the basis of his own estimated unit prices, surveys and site visits.The Contractor takes full responsibility for the Bill of Quantities and no claim whatsoever will be considered in respect of inaccuracy of same. The offer, according to tender is a maximum cost for the project. However the Employer reserves the rights to adjust the prices, according to works carried out following the unit pricelist where deemed necessary and appropriate.
2nd The Contractor has stated the maximum sum that the company will require for carrying out such works, which sum shall be stated in following Article 2, and has total price formed the costs of delivering the Project outputs.
3rd The Contract Documents have been signed by or on behalf of the parties hereto.
4th The quantity surveying duties will be carried out by the Contractor and the Employer in close collaboration.
NOW IT IS HEREBY AGREED AS FOLLOWS:
Article 1
For the consideration hereinafter mentioned, the Contractor will, in accordance with the Contract Documents, carry out and complete the work referred to in the 1st Recital together with any changes made to that work, in accordance with this Contract (hereinafter called the Works)
Article 2
The Employer will pay the Contractor for the Works the maximum sum of ……………………………………………………………………………………, according to the corrected Bid Offer , exclusive of such other sums, as shall become payable hereunder and in the manner specified in the Conditions of the Agreement.
Article 3
pg. 36
The term the ‘’Employer’’ shall mean Concern Worldwide
Article 4
If any dispute or difference in the understanding or interpretation of this agreement or any matter or thing of whatsoever nature arising there under or in connection therewith shall arise between the Employer or the Donor, and the Contractor, either during the progress or after the completion or abandonment of the works or after the termination of the employment of the Contractor, it shall be and is hereby referred to legal feud, in accordance with clause 4.16 of Conditions of the Agreement.
AS WITNESS the hands of the parties hereto:
Signed on behalf of the Employer: Signed by on behalf of the Contractor:
Name: Name:
Designation: Designation:
Date: Date:
pg. 37
4.2 CONDITIONS OF THE AGREEMENT
4.2.1 DEFINITIONS
Table 13: Definitions.Contractor: The Contractor is any individual person, company or
corporate body with offers, experience, capacity and supporting documentation, proved to be the most suitably qualified to carry out the Works, and with whom the Employer has subsequently negotiated, agreed and signed this Agreement.
Construction Site Manager
The Construction Site Manager is the Competent Engineer in Charge, employed by the Contractor, responsible for all daily construction activities, for the safety of the work site, for the execution of the Employer and/or Donor decisions and for receiving the visits of the concerned Authorities.
Contractors Bid/Tender The Contractors Bid/Tender is the completed bidding document submitted by the Contractor to the Employer.
Contract Price/Sum: The Contract Price/Sum is the maximum price stated in the Agreement.
Defect: A Defect is any part of the Works not completed in accordance with the Agreement.
Defect Liability Period: The Defects Liability Period is the period calculated from the date of issue of the certificate of practical completion (Penultimate Certificate) and the issue of the certificate of Completion of Works (Final Certificate).
Donor: The Donors are EU & IRISH AID.Works: The Works are that which the Employer requires the
Contractor to construct, repair, or install and turn over to the work in the agreement, which includes Work on the Site.
Temporary Works: Temporary Works are works designed, constructed,
pg. 38
executed, and removed by the Contractor, that is needed for construction or execution of the Works or for safety reasons and they are the Contractors responsibility.
Subcontractor: A Subcontractor is a person or corporate body who has a Sub-Contract with the Contractor, to carry out part of the work in the agreement, which includes Work on the Site.
Variation Order: Variation Order is an instruction given by the Employer that the works varies.
Language of the Contract
The Language of this Contract is ENGLISH.
Law: The law governing the Agreement is the Law of Sierra Leone.
4.2.2 INTENTION OF THE PARTIES
4.2.2.1 Contractor Obligations
The Contractor shall with due diligence and in a good and workman like manner carry out and complete the Works, in accordance with the Documents Forming the Agreement, using materials and workmanship of the quality and standards therein specified, provided that where and to the extent that approval of the quality of materials or of the standards of workmanship is a matter for the opinion of the Employer such quality and standards shall be to reasonable satisfaction of the Employer.
4.2.2.2 Employers Duties
The Employer shall issue any further information necessary for the proper carrying out of the works, issue all certificates and confirm all instructions in writing.
4.2.3 COMMENCEMENT AND COMPLETION OF THE WORKS
4.2.3.1 Commencement and Completion
The Works shall commence on the ………………day of ………………………….. 2014 and shall be completed by the …………..day of …………………. 2014.
Before the start of physical construction or rehabilitation works, after signing the contract, a technical meeting will be held between the contractors site Engineer or his representative and the Employer representative. The purpose of the meeting is to clarify all the open technical questions; including interpretation & understanding of the designs, as well as work minimum standards, construction monitoring and a realistic work methodology; including work plan as a mandatory requirement.
4.2.3.2 Delays in Commencement:
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If the Contractor delays to start the work without prior approved genuine reasons, for a period of one week from the stipulated start date, this shall be considered a breach of contract.No extension of time shall be allowed, should the delayed start results into late completion and the penalties for liquidated damages in clause 4.2.3.4 shall apply accordingly.
4.2.3.3 Extension of Contract Period:
If it becomes apparent that the works will not be completed by the date for completion, as stipulated in clause 4.2.3.1, for reasons beyond the control of the Contractor or of others persons employed or engaged under this contract, and as described in clause 4.4.3, the Contractor shall thereupon in writing, notify the Employer who may grant such extension accordingly to the article 4.4.4 Extension of the Completion Date.
4.2.3.4 Damages for none Completion:
”If the Works are not completed by the completion date stipulated in clause 4.2.3.1 thereof or by any later completion date under clause 4.2.3.2 hereof, the Contractor shall pay or be liable for penalty at the rate of 0.05% of the maximum Contract price as liquidated damages, for each day of delay, from the mentioned completion date and the date of practical completion”. The Employer shall deduct such liquidated damages from the due payment. The maximum amount of liquidated damages for the whole of the Works shall not exceed 5% of the final Contract Price
4.2.3.4 Defect Liability:
Any defect to works, which appears within Three (03) months of the date of Final Inspection and are due to poor quality materials or workmanship, not in accordance with the Agreement or malicious or inflicted damages occurring before Final Inspection, shall be made good entirely at Contractor own cost, unless the Employer shall otherwise instruct. The Employer shall certify the date when the obligations of the Agreement under this clause has been discharged.
4.3. CONTROL OF THE WORKS
4.3.1 General:
4.3.2 Implementation of the Works:
The Contractor shall construct and install the Works in accordance with the technical specification Documents Forming the Agreement, instructions from the Employer and the Approved Work plan.
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The Contractor shall undertake no Works that are not in the Documents Forming the Agreement, unless authorised in writing by the Employer. The Contractor is responsible for the safety of all activities on the Site.
4.3.3 Assignment and Sub-Contracting:
The Contractor shall not sub-contract the Works or any part thereof without the written consent of the Employer. Sub-contracting shall not alter the Contractor’s obligations.
4.3.4 Personnel:
The Contractor shall employ the key personnel named in a list submitted to and approved by the Employer.
All personnel employed by the Contractor or any of the Contractors sub-contractor must be at least 18 years of age. No child labour is allowed. Personnel should as far as possible be recruited locally in Mathoir chiefdoms in Tonkolili District.
The Contractor shall appoint a Construction Site Engineer, who must have the approval of the Employer.
The Construction Site Engineer shall be in charge upon the Works, and any instruction given to him by the Employer shall be deemed to have been issued to the Contractor. The Construction Site Engineer will be responsible for all daily construction activities, including safety of the work site, for the execution of the Employers Decisions and for receiving the visits of the concerned Authorities. The Construction Site Engineer shall control the access to the work site, limiting only to authorised persons. Because of the mentioned duties he shall be continuously present in the construction site during the working time. The appointed Project Site Manager should be authorized by the Contractor to make decision on behalf of the Contractor with regard to the Agreement.
4.3.5 Exclusion from the Works
The Employer may issue instructions requiring the exclusion from the works of any person employed thereon.
If the Employer asks the Contractor to remove the Construction Site Engineer or any person who is a member of the Contractors team or work force, giving reasonable grounds, the Contractor shall ensure that such person leaves the Site within two days and has no further connection with the work in the Agreement, except under exceptional circumstances when the dismissal shall take immediate effect.
4.3.6 Other site occupants or users:
If it is necessary for other occupants or users to remain in any part of the site or building during the implementation of the Works, the Contractor will co-operate and share the site or building with such occupants or users. If it is necessary that the user’s activity will continue during the implementation of the works, the
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Contractor shall: adapt the work program to the needs of the users, in order to implement the works without modifying the contract period and the completion date; take care of the user’s safety with temporary works, as well as erecting physical barriers; organize the works in such a way to minimize inconveniences to the building occupants.
4.3.7 Employer Instructions:
The Employer will decide contractual matter applicable to the contract parties and will issue written instructions, which the Contractor shall forthwith put into action. If instructions are given orally, they shall, within 5 working days be confirmed in writing by the Employer. If within 7 days after receipt of a written notice from the Employer requiring compliance with an instruction, the Contractor does not comply therewith, the Employer may employ and pay other persons to carry out the work and all costs incurred thereby may be deducted from sum due or to become due to the Contractor under this Contract or shall be recoverable from the Contractor by the Employer as a debt.
4.3.8 Documents to be kept in the course of the Works:
The Contractor shall keep on site, and maintain daily, the construction diary provided by the Employer.The construction diary shall be maintained, with one copy of each page ready to be taken and preserved by the Employer, and one identical page to remain in the construction diary. The Contractor shall keep the construction Diary regularly updated.
4.3.9 Unforeseen Events
Should any event or condition occur which could not have been foreseen by the Contractor and is out of the control of the Contractor, which causes delay and/or additional expenditure and/or renders the work impossible to perform, then the Employer and the Contractor will agree a suitable change to the Contract
4.3.10 Variations:
The Employer may, without invalidating the Agreement, make variations in the quantity and/or quality of the work; by ordering an addition to or an omission from or other change in the Works or the order or period in which they are to be carried out. The effect of any such variations shall be discussed and agreed in writing by both parties, including any adjustments required to the time for completion and/or sums due to the Contractor and/or Employer.
All variations shall be included in the updated Time Schedule produced by the Contractor.
4.3.11 Corrections and Inconsistencies:
Any inconsistency in or between the Documents Forming the Agreement shall be corrected and any such correction, which results in an addition, omission or other change, shall be treated as a variation under the above clause. Nothing
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contained in the Documents forming the Agreement shall override, modify or affect in any way whatsoever the application or interpretation of conditions therein.
4.3.12 Temporary Works:
The Contractor shall provide for the Works adequate scaffolding, ladders, trestles etc.; including adequate and secure storage for materials , temporary access roads and all means necessary for the proper execution of the Works, where necessary or site condition dictates.When requested, the Contractor shall construct: the above temporary works taking into consideration the instructions of the Employer.
The instructions or the approvals given by the Employer shall not alter the Contractors responsibilities for the designs and the construction of the Temporary Works.
4.3.13 Responsibilities for Temporary Works:
The Contractor is responsible for the designs, construction of Temporary Works and for obtaining the relevant approvals (where required) of third parties. When requested, drawings prepared by the Contractor for the execution of the temporary or permanent works, are subject to prior approval by the Employer.
4.4.14 Right to Procure Material or Items used in the Works:
This is a fixed sum contracts and covers costs of materials and labour, as per the total sum in the Bills of Quantities (BoQ), which form part of the contract. The contractor shall be responsible for procurement of all the materials or items to be used for execution of the works; including materials not mentioned in the works description or in other contract documents, when deemed inevitably necessary under the employer’s instructions or his representatives. The Employer shall examine and certify all the procured materials against the specifications for their conformity, prior to execution of works. The costs of any materials procured with prior approval of the employer and certified outside the provision of the contract shall be reimbursed to the contractor.
4.3.15 Removal of Demolished Material and Cleaning of the Construction Site:
Upon completion of the works the Contractor shall remove from the site all equipment, tools, surplus materials, rubbish and temporary works and shall have the site cleaned, leveled and free from all debris, hydrocarbons and waste, and all pits filled to the satisfaction of the Employer. A site not delivered clean may render the Constructed or rehabilitated structure or building unacceptable
4.3.16 As Built Drawings:
As-Built Drawings for part or the whole building or structure including sub-terrain and/or underground components of the completed structure and, report and or plants shall be supplied by the Contractor.
pg. 43
The drawings shall detail all the, aspects of rehabilitation, construction and installations; including any other approved changes to the original plan or designs and all the technical changes dictated by the site condition.
4.3.17 Record and record drawings.
The Contractor shall maintain accurate records, plans and charts showing the dates and progress of all the main activities and the Employer shall have access to this information at all reasonable times. The Contractor shall mark on a separate copy of the drawings, the positions, levels and other details of all existing underground installation including; water mains, sewers, drains, cables and other services which are exposed during construction of the work.
4.3.18 Damages to existing Underground Installations
The contractor shall be solely responsible for making good the loss of damages to existing installations (electricity, water supply etc.), which is damaged or cut due to negligence of the workers at site or the site construction engineer negligence. In this respect, all the underground installations must be mapped out and pegged with guidance from the users of the building or the client prior to the start of any works. In exceptional circumstances, the costs of repair of underground installation which are accidentally damaged shall be reimbursed by the Employer, based on recommendation from the site supervisor and prior approval by the Employer in writing.
4.3.19 Progress photographs
Photographs showing the progress of the works shall be taken weekly, for all the critical stages of the construction. Special photographs showing particular features of the critical stages of work components of interest in connection with the Works shall also be taken when required by the Employer. Photographs shall be taken using digital photography. The files shall be numbered, filed and handed over to the Employer. The copyright of the photographs shall remain with the Employer.
4.4 Time Control:
4.4.1 Work plan/Time Schedules:
Contractor shall submit a realistic work plan/time schedules for the implementation of the works to the Employer for approval, showing the general methods, arrangements, order and timing for all activities, including delivery of the materials, before start of works.
A simple Bar Chart with the timing of the works shall be kept on the Site and shall be continuously updated to show the progress of the works and their compliance with the planned activities. Should the Contractor failed to submit the Time Schedule within five working days, the Contractor shall be liable to a penalty of 0.1% of the contract value for each day the work remains outstanding and in exceptional case disqualified from the Works. A delay of more than one week is an exceptional case.
pg. 44
4.4.2 Variation to the Time Schedule/Program:
Each time a variation occurs that may affect the progress or sequence of the works, the Contractor shall adapt the Time Schedule/Plan to the new situation, showing the measures adopted to complete the works in time, and shall submit to the Employer for approval.
The plan may be required to be seen at any time during the construction, showing all necessary revisions. The Employers approval of the Time Schedule/Plan shall not alter the Contractors obligations.
4.4.3 Early Warning:
The Contractor shall give advance warning to the Employer at the earliest opportunity of specific likely future event or circumstances that may delay the execution of the Works or adversely affect their quality and shall request for a written, dated, approval of a change in time for the Works to proceed. The Employer may require the Contractor to provide an estimate of the expected effect of the future event or circumstance on Completion Date.
The estimate shall be provided by the Contractor as soon as reasonably possible. If events beyond the control of the Contractor cause changes in time, the Contractor must advise the Employer at the earliest possible.
4.4.4 Extension of the Completion Date:
The Employer shall extend the Completion Date, if circumstances occur beyond the Contractors control or a Variation Order is issued by the Employer which, in the Employers opinion, makes it impossible to achieve the Completion Date specified, provided that the Contractor always uses his best endeavours to make progressive works and minimize any such delays.
The Employer shall decide and determine the extended Completion date, based on a technical progress site report works and updated detailed work plan for the remaining works. If the Contractor failed to give early written warning of anticipated delay, this delay may not be considered in assessing the new Completion Date.
4.4.5 Delays Ordered by the Employer:
The Employer may instruct the Contractor to delay the start or progress of any activity within the Works. Such ordered delay shall be noted in the construction Diary and the Time schedule shall be revised accordingly.
4.4.6 Completion:
The Contractor shall request, at an appropriate time, the Employer to issue the Final Inspection certificate and Final Completion Certificate at the expiry of the Defect Liability period. The Employer will do so upon certifying that the works is completed without defects.
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4.5 Cost Control:
4.5.1 Contract Price:
The contract is a Fixed Maximum Sum Contract and the corrected Contract Price will not be increased after signing of the Contract and is not open to negotiation after the Works are executed or materials are purchased.
The Contract Price has been fixed by the Contractor in his offer made after its careful visits to the site and accurate quantity surveys.
The Contract Price has been calculated by the Contractor on the basis of the Bill of Quantities and corrected by the Employer for arithmetic errors and the costs of the works prepared and estimated to complete the works, as described in the Tender Documents.
The Bill of Quantities (BOQ) contains all items necessary for the execution, testing and commissioning of work to be done by the Contractor, The Contractor will provide all necessary materials for the execution of the works, subject to approval of the Engineer or Employers representative, before putting them to use; including materials required for any temporary works that the Contractor may requires.
No adjustment for increased costs of labour, materials or other resources shall be made during the course of the works. If requested, the Contractor shall provide the Employer with a detailed cost breakdown of any rate in the Bills of Quantities prepared by him.
4.5.2 The Contract Maximum Sums:
The Maximum Contract Price is made up of Partial Maximum Sums, each one proportional to each category of works, calculated according to the Contractors Bill of Quantities and relevant cost estimates. The Partial Maximum Sums will be used to pay the Contractor on the basis of the percentage of work executed for each Works category, in consistency with the payment schedules.
4.5.3 Installations of Items Purchased by the Employer (if applicable).
Where applicable, the cost of labour or other associated costs for the installation of items not covered by the contract sum but purchased by the Employer and installed by the Contractor shall be agreed between parties, before the installation and considered as variation. In which case, variation order(s) shall be issued for this purpose
.4.5.4 Changes in Quantities or Quality:
If the Employer, during the implementation of the works, orders in writing a variation which requires an addition or an omission of the Works, the Employer and the Contractor shall agree and adjust the Contract Price to reflect the true
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value of the works, as they were actually built or completed. The price of the works shall be calculated on the basis of the price of similar works already included in the Contractors offer.
If neither the Maximum sums nor the Priced Bill of Quantities in the offer can provide elements to determine the price, the Employer shall determine a fair and reasonable cost for these works. If the variation results into an additional works, then a new (revised) Maximum Sum including the costs variation shall be determined and agreed. Conversely, if instead the works result into an omission, the relevant Maximum Sum will be proportionally reduced.
4.5.5 Work Progress Report:
The Contractor shall issue a work progress report in compliance with the construction site diary.
The work progress report should cover two weeks work, unless otherwise agreed, and is the cumulative progressive reports shall be considered for payments from the Employer, according to the agreed payment schedules.
4.6 Quality Control:
4.6.1 Work Supervision and Monitoring:
The Employer and/or his representative shall carry out professional monitoring and supervision of the Works to control quality of work and materials, the quantities of materials used, and ensure that the Works are executed in accordance with the standard specifications, as well as term and conditions of the Contract
4.6.2 Identifying Defects:
The Employer shall check the Contractors work and notify the Contractor of any Defects that are found. Such checking shall not affect the Contractors responsibilities.
The Employer may instruct the Contractor to search for a Defect and to uncover and test any work that may be considered to be Defective. Such Defects or Discrepancies shall be noted in the Construction Diary.
4.6.3 Notice of Identified Defects:
Defects identified by the Employer or his representative that are noted in the construction Diary, will serve as sufficient notice to the Contractor, provided that the time scale or procedure for correction is also noted.
4.6.4 Quality of Works and Materials:
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All quality, whether particularly mentioned in the Specifications or otherwise, is expected to be the highest standard and any work or material other than the specified or standard quality shall be considered as a defect that must be corrected as specified in section 4.2.2.1.
4.6.5 Tests on Building Materials:
The Employer shall where necessary send to an authorized laboratory approved by Employer or perform tests on site independently; for samples of the concrete used for the construction structure to be tested, the preparation of the specimen will be made in the presence of the Employer and duly signed off. If any material used does not comply with standards, guidelines, codes etc., such material has to be removed from the Site and any works already done should be demolished and rebuilt on the Contractors own cost. Where required, table showing the test frequency and standards to be followed may be provided when necessary. Reinforcement steel bars, aggregate, sand, cement and other raw materials should be tested at the production location and certified prior to transportation and delivery to site. This will be certified by the Employer or representative, unless otherwise agreed.
4.6.6 Hidden Works:
Hidden works are considered to cover all construction or underground installations that are not visible once completed. The Contractor must provide a schedule for underground installations and give advance notice of times that inspection can be made before the Contractor closes or covers any work that would make it impossible or difficult to inspect later. After having received notice or a schedule, the Employer will inspect the Works that will become hidden within a reasonable time, so that Works are not delayed.
4.6.7 Correction of Defects:
The Employer shall give notice to the Contractor of any Defects before the end of the Defects Liability period, which begins at Final practical Certification. The Defects Liability period shall be extended for as long as the Defects remain to be corrected. Every time notice of a defect is given, the Contractor shall rectify the notified Defects, within the length of time specified by the Employer notice.
4.6.8 Uncorrected Defects:
If the Contractor fails to correct the defect within the time specified in the Employers notice, the Employer will assess the cost to be incurred, in rectifying the defect by another contractor or subcontractor, and will deduct such amount from the Penultimate (practical completion ) Payment Certificate.
4.6.9 Samples of Items and Materials:
In the event that the Contractor has been approved to supply materials, the following shall be applicable:
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The Contractor must provide to the Employer in advance, prior to any construction or execution, with samples of any items, any construction materials before its use used; for instance steel bars, cement, scaffoldings, form works, moulds etc. test pieces, as well as any item which the Employer may require.
Each material sample must be approved by the Employer. The approved samples shall be signed by both the Contractor and the Employer and kept in a storage room to be used as comparison of quality, in case of disputes. Samples should be paid for by the Employer.
4.6.10 Materials and Items subsequently required to be substituted:
If the required Samples demonstrated unacceptable quality and the Contractor cannot assure acceptable quality for items to be installed or used for the construction purposes, or in the event that subsequently installed or used items are of unsatisfactory quality, the Employer may locate an acceptable source and arrange for the procurement and/or installation of such item.
4.7 PAYMENTS:
4.7.1 Modalities of Payment:
The payments shall be made according to payment schedules specified in the contract agreement, according to an agreed schedule for the payment circles.
The payments to the Contractors will be made within 20 days of the date of each work progress Certificate together with corresponding invoice. This date shall be delayed for substantial causes, not due to the negligence of the Employer, only for the period of time necessary to remove the reasons of such delays.
Likely causes shall be; the delays due to the transfer of funds from the Employers Headquarters in Dublin to a bank instructed by the Contractor; other causes beyond the employer’s control provided always that the Employer uses his best endeavours to minimize any such delays.
All payments will be done by bank transfer form. The transfer will be done by Concern Worldwide Sierra Leone, to a bank account within Sierra Leone.
4.7.1.1 Payment Schedules:
The consideration herein reserved shall be paid, subject to any laws on taxation in the following manner.
Table14: Payment Schedules.Schedules: 1
Advance payment of 20% of total contract price totalling to; ………………………………………………………………………………………………………………………….. Leones Only (Le ), at the start of the
pg. 49
contract, based on submitted advance bank guarantee; less 5% withholding tax totalling to Le (………………………………………………………………………….. Leones Only.)
Schedule :2
First Interim payment certificate (IPC1): 30% of total contract price; totalling to ………………………………………………………………………………….. Leones Only (Le……………………. ), after satisfactory completion of all the internal rehabilitation work components; doors and windows installation, ceiling replacement and all internal paintings & finishing works for the main PHU buildings and Staff Quarters, less 5% withholding tax; totalling to Le……………………. (……………………………………………………………………… Leones Only).
Schedule: 3
Second Interim Payment Certificate (IPC2): 40% of total contract price; totalling to …………………………………………………………………………………………………………………………………………….Leones only (Le…………………………), after the satisfactory completion of the external works; including external paintings, roof repairs, fascia board replacement and painting, compound and external drainage improvements, rain water harvestings systems construction, Lined VIP Latrines construction, Septic tanks and soak away pits, Incinerators construction, maternity and Laboratory Extension and construction of all the walkways and all the pre-requisite finishing works; less 5% withholding tax of Le………………………(……………………………………………………………………………………………………………………… Leones Only)
Schedule: 4
Third and final payment certificate (FPC): Retention money of 10% of total contract price; totalling to ……………………………………………………………………………………………………………………………………….. Leones Only (Le ………………………..), after the Defects Liability Period of three months (03) has elapsed and the Employer has certified that all Defects notified to the Contractor, before the end of this period have been corrected. The final retention payment is also subject to
pg. 50
5% withholding tax deduction; totalling to Le……………….. (……………………………………………………………………………..Leones Only).
It is expressly agreed that in the event that the Works or any portion thereof is deficient or does not conform to the specifications provided, CONCERN shall be at liberty to select either to require the Contractor to immediately remedy the defect, or hire another Contractor to remedy the defect and apply the consideration in Clause 4.6.8 to such cost. In addition, CONCERN may choose to take action against the Contractor in the event of defects.
All payments shall be made in Sierra Leonean Leones and invoices for payments shall be submitted with the relevant supporting documents including, but not limited to, receipts, technical progress reports, interim and practical completion certificates, etc. and indicate the Contractor’s bank accounts to which the payment shall be made.
4.7.2 Fixed sum Contract Price
Upon signing of this contract both parties have agreed on the total maximum sum for the works specified. This is a fixed Maximum sum contract. The contractor will charge no extra amount and no reduction sought by the Employer unless expressly agreed by both parties. Or in case a different “design or plan” and therefore different quantities and/or quality of material, tools and equipment are required for successful completion, then such requirements shall be communicated by the Contractor to the Employer for approval, as a pre-condition of acceptance of subsequent proceeds.
Payment will not be made for constructed components of the structures that do not conform to minimum standard and specifications or such value set by the Employer or for any works done without prior approval of the Employer.
4.7.3 Payment (Work Progress) Certificates:
Employer or his representative shall, weekly and bi-weekly, visit the Construction Site and checks the quantity and the quality of the work done. The value of work executed shall be determined after this checking, in order to ascertain the monetary value of works completed, in order to certify the amount to be paid to the Contractor. The Employer shall issue the following Payment Certificate:- the Interim (Progress) Payment Certificate- the Final Practical Inspection Protocol- the Final Certificate
4.7.4 Advance Payment:
4.7.4.1 Amount of the Advance Payment:
The Employer shall make advance payments of 20% of the fixed maximum sum of the contract amounting to:……………………………………………………………………………………………………………………………………………………………………………………………………Leones Only (Le …………………………….), less 5% withholding tax totalling to Le(…………………….pg. 51
…………………………………………………………………………………………………………………………………………………. Leones only
The Contractor must present an acceptable bank guarantee against the same amount valid for an agreed period of time, as a precondition for the payment of the advanced sum.
The advance amount shall form part of the contract sum. In the end, the contractor shall only be entitled to 80% of the contract sum; (which includes 10% retention money and 5% withholding tax), based on performance certification, after payment of the 20% advance. All subsequent payment shall be according to the payment schedules defined in contract agreement in clause 4.7.1.1 .
The Contractor must present an acceptable bank guarantee against the same amount valid for an agreed period of time, as a basis for the payment of the advance.
4.7.5 Repayment of the Advance Payment:
The advance is part of the total contract sum and therefore shall not be subject to repayment and the contractor shall be entitled to only 80% which will be subject to 10% retention money & 5% tax deduction, according to the payment schedules.
4.7.6 Retentions:
The Employer shall retain 10% from each payment as retention money for guarantee:
The total amount retained for guarantee (10%) shall be repaid to the Contractor after the expiry of the Defects Liability Period and the Employer has certified that all Defects notified to the Contractor, before the end of this period have been corrected against acceptable bank guarantee for the same total amount for guarantee (10%) valid for a period of three months after the date of the final certificate.
4.7.7 Progress Payments:
Each time that the Contractor executes (either from Contract Commencement date or from the last Interim Payment Certificate) new works, in addition to those already made, and/or supplies for an amount not less than 10% of the Contract Price, the Employer shall, if requested by the Contractor, certify progress payments to the Contractor in respect of the value of the works properly executed and calculated by a percentage of the partial maximum sum of the relevant category works; including any amounts either ascertained or agreed under clauses 4.5.3 and 4.5.4 hereof; including the value of any goods which have been reasonably and properly brought for the purpose of the works and which are adequately stored and protected against the weather and other casualties; - less 5% withholding tax
4.7.8 Penultimate Certificate:
pg. 52
The Employer shall, within 20 days after the date of practical Inspection Certification, certify any outstanding payment to the Contractor of 40% as per the payment schedules, or the total amount to be paid to the Contractor under this Contract so far as that amount is ascertainable at the date of practical Completion, including: any amounts either ascertained or agreed under clauses 4.5.3 and 4.5.4 here of;
- less liquidated damages.- less 5% withholding tax.
4.7.9 Final Certificate (Defect Liability Certificate):
The Contractor shall supply within three months from the date of Practical Completion all documentation reasonably required for the computation of the amount to be finally certified by the Employer.
Provided that a penultimate certificate is issued under clause 4.7.8 hereof, the Employer, shall within 30 days on receipt of such documents, shall issue a Final Certificate certifying the remaining amount due to the Contractor or due to the Employer as the case may be, after checking the performances of the structure or the Quantities and Quality of Materials that were actually built.
If the Contractors final detailed account on demand is determined by measurement and examination to be inaccurate, or unsatisfactory, the Employer shall request that the Contractor correct and resubmit the Final Account due and the Employer will provide a schedule that states the scope of the corrections or additions that are necessary. Such verification shall be carried out within a reasonable time. If the Final Account is still unsatisfactory after it has been resubmitted, the Employer shall decide on the amount payable to the Contractor and issue the Final Certificate or payment. The sum certified shall be a debt payable as the case may be by the Employer to the Contractor or by the Contractor to the Employer. The amount of retention will not be released according to the Payment Schedule.
4.7.10 Maximum Price and Price Adjustments:
No account shall be taken in any payment to the Contractor under this Contract of any change in the cost to the Contractor of the labour, materials, plant and other resources employed in carrying out the Works, unless prior approval of the Employer in writing is sought.
4.7.11 Provisional sums:
The Employer shall issue instructions on the expenditure of any provisional sums and such instruction shall be valued or the price agreed in advance.
4.8 Compensation Events:
In all cases listed under this article, the Contractor shall make a written application (early warning) within a reasonable time of it becoming apparent, that the progress of the Works, or any part thereof, has been executed. In any
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event, the Employer shall determine the time and, if any, the compensation due to the Contractor, as soon as a written application is made.
4.8.1. Compensation events not requiring liquidated damages but extension of time:
The following are compensation events which do not require liquidated damages, but time extension:
(a) The Employer orders a delay or does not make inspections, issue Drawings, Specifications, or Instruction required for execution of the Works on good time;
(b) Civil commotion, local combination of workmen, strike or lockout;(c) Force majeure, like exceptionally inclement weather, outbreak of war etc.;(d) The Employer changes the Time Schedule/Plan for the users to utilize part
of the building during the works;(e) The Employer hands over the site to the Contractor not entirely but in
separated phases.
4.8.2 Compensation events requiring liquidated damages and time extension.
The following are compensation events which require liquidated damages and extension of time
(a) The Employer orders a change to the original design with additional works;(b) Ground conditions are substantially more adverse than could reasonably
have been assumed from information available, and from a visual inspection of the Site, which causes additional amount of work beyond anything foreseeable;
(c) Other Compensation events determined case by case, the Employer shall determine.
4.8.3 Evaluation of extension of time and of damages:
If a Compensation Event would prevent the work being completed before the Completion Date, the Completion Date shall be extended. The Employer shall decide whether and by how much the Completion Date shall be extended. If a Compensation Event would imply additional works, included neither in the description of the works nor in the estimate of the Contractor and therefore not even in the Lump Sum prices, these additional works shall be evaluated and priced as described in article Changes in Quantity or Quality before implementing, and the Contract Price shall be adjusted accordingly. The Contractor shall not be entitled to compensation to the extent that the Employer’s interests are adversely affected by the Contractors not having given early warning or not having tried to solve the problems or not having cooperated with the Employer or contractor suspended the works without authorization.
4.9 Tax and Duties:
4.9.1 Local Taxes:
pg. 54
The Employer will retain and pay “Tax Deducted at Source”, Royalties, Sales Tax and other taxes as applicable to the authorities within Sierra Leone. All other taxes and duties are the responsibility of the Contractor.
4.9.2 Import duties:
The Contractor, if required, shall present to the Employer the invoices of imported materials and must provide the documentation, showing exactly which material, in what quantity and for which purpose, they have been used; The Contractor shall facilitate inspection of materials and Works, to be assured that the materials have been used only in the Works.
4.10 Currency:
The Contract Currency will be in Sierra Leonean Leones.
4.11 Cost of Repairs:
Loss or damage to the Works or materials to be incorporated in the Works between the Start Date and the end of the Defects Liabilities periods shall be remedied by the Contractor at the Contractors costs, if the loss or damage arises from the Contractors acts or omissions.
4.12. STATUTORY OBLIGATIONS:
4.12.1 Statutory Obligations:
The Contractor shall comply with and give all notices required by any statute, any statutory instrument, rule or order or any regulation or by law applicable to the works (hereinafter called the Statutory Requirements) and shall pay all fees and charges in respect of the Works legally recoverable. If the Contractor finds any divergence between the Statutory Requirements and the Contract Documents or between the Statutory Requirements and any instruction of the Employer, the contractor shall immediately give a written notice specifying the divergence to the Employer.
4.12.1 Other local obligations applicable in Sierra Leone.
a. ‘Contractor’ refers to any person, firm or company to whom the contract for work has been given and includes his permitted assigns, heirs, executors, administrators or other legal representatives.
b. Contractor shall provide at his work at all times adequate number of staff/workers who are adults (18 years and above of age) and have been certified physically fit to work by the Contractors Medical Officer.
c. Contractor shall pay to his workers’ wages, as may be prescribed under any Minimum Wages Act and Rules wherever applicable. In cases not covered under the Minimum Wages Act and Rules, the Contractor shall pay his workers minimum wages as paid by the company to different categories of his workers.
d. Compliance with Government Statutory Provisions: The Contractor shall comply with all the provisions of Central and State legislations as well as
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municipal and other local regulations as may be applicable to him from time to time. The Contractor shall obtain necessary license/certificate, if any, and shall get himself registered, if so required under provisions of any law and shall also make payment to his workers as well as to different authorities as may be prescribed under various laws as required in Indonesia.
e. Contractor shall ensure that the workers employed by him make proper use of safety appliances and that they work in safe conditions.
f. Contractor shall remain present either himself personally or shall keep his representatives present to have adequate supervision and control over the work done by his workers.
g. Any accident to any of the Contractors employees while on work shall be immediately reported in writing. No such injured worker shall be allowed to resume duty and given any work at the Site except after obtaining physical fitness certificates from the Contractor’s Medical Officer.
h. Whenever an employee of the Contractor suffers an occupational injury or occupational disease because of work performed by him, the Contractor shall furnish promptly a report thereof to the Employer.
i. The Contractor shall take insurance and shall keep it in force to cover risks as stated below:
i. Workmen’s Compensation
ii. Fatal Accidents Act
iii. Personal Accident Insurance
iv. Insurance against third party claims for personal injuries and death; and damage to property
j. If on account of failure by the Contractor to comply with provisions of any law(s) that may be applicable to him from time to time, the Employer make any payment or suffer any loss or damage the Contractor shall fully indemnify the Employer.
k. The Contractor shall only employ such persons who are not disqualified under any law and are suitable and competent to do the jobs assigned to them. The Contractor shall at all-time enforce strict discipline and good order amongst his workers. He shall keep complete supervision and control over his workers. In the event it is found that it is not desirable in the interest of the Employer to continue employment of any worker by the Contractor, the Contractor shall not employ such worker for the Employers work.
l. Contractor shall indemnify the Employer to the extent of damages or losses incurred by the Employer arising out of non-fulfilment or non-compliances of any of the terms of the Agreement.
m. In the event of Force Majeure over which the Employer has no control and if it was not possible for the Employer to fulfil his part of the Agreement, the Contractor shall have no claim of any sort whatsoever against the Employer.
n. The Contractor is given on specific understanding, that should the Government or any local authority put any restriction or objection by which the Contractor is unable to fulfil his part of the Agreement, the Employer shall not be responsible for any loss incurred by the Contractor.
o. Wherever applicable, income tax will be paid by the Contractor from the amount payable to the Contractor. The Contractor shall have a clean income tax record and in case it is found that he is involved in any unlawful activity leading to evasion of income tax payment, the Employer will take immediate
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steps to terminate the Agreement. Nothing herein contained shall be deemed to create any privity of any nature whatsoever between the Employer and the employees of the Contractor.
4.12.2 Construction permits, licenses for public utilities, fees and charges:
The Contractor shall before the Commencement of the works obtain all necessary approval for the implementation of the works by central and regional offices. In this activity it will receive all necessary technical and administrative support by the Employer. If for any reasons beyond the Contractors control it is not able to get the permission to commence the works in good time, the dates of the Commencement and Completion of the works will be postponed according to the judgment of the Employer and the Contractor shall not be entitled to ask for any compensation.
4.12.3 Prevention of Corruption:
The Employer shall be entitled to cancel this Contract and to recover from the Contractor the amount of any loss resulting from such cancellation, if the Contractor shall have offered or given or agreed to give any person any gift or consideration of any kind or if the Contractor shall have committed any offence under any applicable legislation for the prevention and punishment of corrupt practices.
4.13. INJURY, DAMAGE AND INSURANCE:
4.13.1 Contractors Risks:
From the Starting Date, until the Final Certificate has been issued, the risks of personal injury, death, and loss of or damage to property (including, without limitation, the Works, Site, Materials, and Equipment) are Contractors risks.
4.13.2 Contractors Responsibilities
The Contractor has the duty to take particular care for the safety of users or occupants of the buildings concerned. As far as the construction works close to buildings and areas where children are active such as school buildings, Health centres and playgrounds, the Contractor shall take particular care for children who may be near or in the Site. Because children are not able to understand the seriousness of risks, simple signs or verbal warnings may not be sufficient safeguards. In some situations, it may be necessary for the Contractor to erect physical barriers between the Works, the Equipment, the Materials and the occupants, users, or even the neighbours of the site. The contractor will be responsible for any personal injury or death to all people in the work site either people employed, workers and authorized visitors or persons who came in the work site because of lack of sufficient safeguards.The Contractors responsibility and liability continues until the handover is fully effective and all defects have been corrected.
4.13.3 Injury to or Death of Persons:
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The Contractor shall be responsible for the safety of all activities on the Site and shall be liable for and shall indemnify the Employer against any expense, liability, loss, claim or proceedings whatsoever arising under any statute or at common law in respect of personal injury to or death of any person whomsoever arising out of or in the course of or caused by the carrying out of the Works, except to the extent that the same is due to any act or neglect of the Employer or of any person to whom the Employer is responsible. Without prejudice to its liability to indemnify the Employer, the Contractor shall cause any sub-contractor to take out and maintain insurance which, in respect of liability to employees or apprentices, shall comply with any statutory orders made under any Act or law, in respect of any liability for personal injury or death, or, in case of lack of adequate Acts or Laws, shall comply with the request of the Employer. In respect of any liability for personal injury or death, the insurances shall be an amount necessary to cover the liability of the Contractor or of its sub-contractor and in any case the amount of the insurance cover referred to above must be not less than: Twenty million Sierra Leonean Leones ; 20,000,000Le.
4.13.4 Damages to Property:
The Contractor shall be liable for and shall indemnify the Employer against any expense, liability, loss, claim or proceedings in respect of any injury or damage whatsoever to any property real or personal (other than injury or damage to the Works or to any unfixed materials and goods delivered to, placed on or adjacent to the Works and intended therefore or, to any property insured by the Employer) as far as such injury or damage is due to any negligence omission or default of the Contractor of by its agents or any person employed or engaged by him, and arises out by reason of the carrying out the works. Without prejudice to its liability to indemnify the Employer, the Contractor shall take out and maintain and shall cause any sub-contractor to take out and maintain insurance in respect of injury or damage to any property real or personal other than the Works which shall be for the amount necessary to cover the liability of the Contractor or of its sub-contractor and in any case for the amount not less than the sum stated below for any one occurrence or series of occurrences arising out of any one event: Insurance cover referred to above must be not less than: Twenty million Sierra Leonean Leones ; 20,000,000Le.
4.13.5 Evidence of Insurances:
The Contractor shall provide insurance cover from the Start Date to the date of Final Certificate for the following events which are due to the Contractors risks:
loss of or damage to the Works, Site and Materials; loss of or damage to Equipment; loss of or damage to property in connection with the Contract; personal injury or death to people in the work site, and loss of damage to existing buildings or adjacent to the site, including third parties.
The insurances shall not release the Contractor from his obligations, responsibilities, liabilities and duties.
The Contractor shall produce, and shall cause any sub-contractor to produce, such evidence as the Employer may reasonably require that the insurances referred to have been taken out and are in force at all material times. Alterations
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to the terms of insurance shall not be made without the approval of the Employer.
4.14 SECURITY:
Performance security, of at least 10% of the value of the Contract Price, shall be provided to the Employer by the Contractor and shall be made in a way similar to the sample of acceptable bank guarantee. The performance security shall be valid until the date of issue of the Final Certificate.
4.15 DETERMINATION AND RELEASE FROM PERFORMANCE:
4.15.1 Notices:
Any notice or further notice to which the following clauses refer shall be in writing and given by actual recorded delivery or by registered post. If sent by registered post or recorded delivery the notice or further notice shall, subject to the proof of the contrary, be deemed to have been received 48 hours after the date of posting (excluding Saturday, Sunday and public holidays).
4.15.2 Determination by the Employer:
If the Contractor without reasonable cause makes default by failing to proceed diligently with the Works or by wholly or substantially suspending carrying out of the works, before practical completion, the Employer may give written notice to the Contractor which specifies the default and requires it to be ended. If the default is not ended within 7 days of receipt of the notice the Employer may by further notice to the Contractor determine the Employment of the Contractor under this Contract. Such determination shall take effect on the date of receipt of the further notice.
A notice of determination shall not be given unreasonably or vexatious. If the Contractor makes a composition or arrangement with his creditor, or becomes bankrupt, or being a company, makes a proposal for a voluntary arrangements for a composition of debts or scheme of arrangement to be approved in accordance with any companies acts as the case may be or any amendment or re-enactment thereof, or has a provisional liquidator appointed, or passes a resolution for voluntary winding-up (except for the purposes of amalgamation or reconstruction), or under any Insolvency Act or any amendment or re-enactment thereof has an administrative receiver appointed the Employer may by notice to the Contractor determine the employment of the Contractor under this Agreement. Such determination shall take effect on the date of receipt of such notice.
Upon the determination of the employment of the Contractor, the Contractor shall immediately cease to occupy the site of the works and the Employer shall not be bound to make any further payment to the Contractor that may be due under this Contract until after Completion of the Works and the making good of defects therein.
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The Employer may recover from the Contractor the additional cost to him of completing the works, any expenses properly incurred by the Employer as a result of and any direct loss and/or damages caused to the Employer by the determination.
4.15.3 Determination by Contractor:
If the Employer makes default in any one or more of the following respects: - The contractor does not discharge in accordance with this Contract the
amount properly due to the Contractor in respect of any certificate; - obstructs the carrying out of the works; - suspends the carrying out of the whole Works for a continuous period of
more than one month, the Contractor may give notice to the Employer which specifies the default and requires it to be ended. If the default is not ended within 7 days of receipt of the notice the Contractor may by further notice to the Employer determine the employment of the Contractor under this Contract. Such determination shall take effect on the date of the receipt of the further notice. A notice of determination shall not be given unreasonably or vexatious.
Upon determination of the employment of the Contractor, the Contractor shall prepare an account setting out the total value of the works properly executed and of materials and goods properly brought on the site for the purpose of the Works, such value to be ascertained in accordance with this Contract, as if the employment of the Contractor had not been determined together with any amounts, due to the Contractor, under the conditions not included in such total value; - the cost to the Contractor or removing or having removed from the site all
temporary buildings, plant, tools and equipment; and any direct loss and/or damage caused to the Contractor by the determination.
After taking into account amounts previously paid or otherwise discharged to the Contractor under this Agreement, the Employer shall pay to the Contractor the full amount properly due in respect of this account within 30 days of its submission by the Contractor.The provision of this clause is without prejudice to any other rights and remedies which the Contractor may possess.
4.15.4 Releases from Performance:
If the Contract is frustrated by the outbreak of war or by any other similar event entirely outside the control of either the Employer or the Contractor, the Employer 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 and for any work carried out afterwards to which a commitment was made.
4.15.5 Land Ownership Disputes:
In the event that unanticipated land ownership disputes arise, or if the current
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owner of the land, site, and/or building makes a new objection or difficulty, the Contractor shall stop work immediately, secure the site of equipment and materials, and request a judgment from the Employer as to whether or not the Contract has been frustrated.
14.6 SETTLEMENT OF DISPUTES:
In the event that a settlement will be referred to a court the following court shall be used:
The High Court of Sierra Leone
4.16.1 Requests for Determination:
When the Employer or the Contractor requires a dispute or difference as referred to in article 4 of the Agreement to be referred to court then either the Employer or the Contractor shall give written notice to the other to such effect and such dispute or difference shall be referred to court and final decision of the same court and The Governing language shall be the English language.
4.17. COMMUNICATIONS:
Communications between parties that are referred to in the Conditions shall be effective only when in writing. A notice shall be effective only when it is received directly, oral communications from the Employer or his Delegated Employee to the Contractor concerning the works, must be respected immediately, but must be reduced to writing within a reasonable time. All the instructions communicated from the Employer to the Contractor by mean of the Construction Diary, are considered written communications.
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SECTION V: CONTRACT ADDITIONAL INFORMATION
The Works consist of rehabilitation of Mathoir Peripheral Health Units (PHU) at Mathoir community in Tonkolili District, as per Specification.
The Start Date shall be the ……………… day of…………………… 2014. The intended Completion Date for the whole of the Works shall be the ……………day of……………………2014 (a period of …………………weeks).
The following documents also form part of the Contract:
(a) The Letter of Award(b) The Form of Agreement(c) Conditions of Agreement (d) The Contract Data (e) The Technical Specifications(f) The Work scopes(g) Working Plan & Work Methodology(h) The Drawings. (i) The priced Bill of Quantities(j) The Programme Participant Protection Policy.
The Contractor shall submit a revised Work Plan for the Works within 5 days of delivery of the Letter of Award.
The following documents are also part of the Contract:
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a. The Schedule of Key Personnelb. Site assessment Reportsc. The Site Possession Date shall be 7 Days after signing the contractd. The Sites are located in Mathoir Community at Yoni chiefdoms in Tonkolili
District.e. The Defects Liability Period is 3 Months after issuing of maintenance
certificatef. The minimum insurance covers shall be:
All risks policies to cover damage to works, third party liability and workmen’s compensation with a liability covering of not less than Le 20million for one or a series of risks
i. The grace period after expiry of the contract (allowable period of completion in excess of the agreed completion date) is 15 days.
ii. The amount to be withheld for late completion of works is 0.05% of total Contract Value per day.
iii. The language of the Contract documents is English.iv. The law that applies to the Contract is the law of the Republic of Sierra
Leone.v. Institution whose arbitration procedures shall be used: Arbitration Law of
the Republic of Sierra Leone vi. The currency of the Contract is the Leonesvii. The Contract is not subject to price adjustment, it is a fixed price contract.viii. The proportion of payments retained is 15% ( 5% for tax for each payment
certificates and 10% for works security over the defect liability period of 3 months)
ix. The maximum amount of liquidated damages for the whole of the Works is 5% of the final Contract Price.
x. The Advance Payment will be 20% and will be paid to the Contractor, not later than 10days after signing of the contract against an insurance indemnity for that amount.
xi. The Performance Security shall be for the following minimum amounts equivalent as a percentage of the Contract Price:
Performance Bond of 10% of contract value. xii. The standard form(s) of Performance Security acceptable to the Employer
shall be an Unconditional Bank Guarantee or a Performance Bond, of the type referred to in Section 1 of the Bidding Documents.
The Employer is Concern Worldwide, 23A Cantonment road off King Harman, Sierra Leone.
The Contract Manager is Charles Omona, Engineering Coordinator (Tel: +232(0)76 441 394).
The name and identification number of the Contract is CON/SHAPE/MATHOIR PHU/REHAB/TK /03/2014
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SECTION VI: TECHNICAL SPECIFICATIONS
PART I – GENERAL MATTERS
6.1.1 General Matters
i. The Contractor shall be deemed to have visited the site, to take account of all local and existing conditions and to make him thoroughly acquainted with the layout of the proposed building in relation to existing condition under which work will be carried out. Access roads are frequently impassable during the rainy season for vehicles. No claim of want of knowledge will be entertained.
ii. The Contractor shall make full enquiries to satisfy himself that all imported materials, including timbers, which are described in the Bills of Quantities and to which its price relate will be available in sufficient quantities in the local market to enable him to complete the whole works in contract time. No claim will be entertained on the grounds that the Contractor had to resort to alternative source of supply of materials specified.
iii. The sand, aggregate, stones and water may be gathered locally within the communities. The collection and delivery of such materials will be done by the Contractor. If local materials are not available or of the correct quality the Contractor is responsible for locating these from other sources. The cost of this will be borne by the Contractor.
iv. The Contractor will be required to have made all enquiries as to the source of his labour, skilled and unskilled, and to have made all provisions in his bid for every cost to him of providing and maintaining the labour force necessary to complete the contract including all supervisory cost associated therewith. No claims will be entertained on grounds associated with the failure by the Contractor to observe these recommendations.
6.1.2 Contractor’s Liability
i. The Contractor will be solely responsible for safeguarding the works, materials and plant against damage and theft and he is advised to effect additional insurance as is necessary to adequately cover such risks.
ii. The whole of the materials (except where otherwise described), stones and equipment required for the full performance of the contract by the Contractor must be provided through normal trade channels and shall include for the payment of all necessary bank charges, opening letters of credit, postage, cables, telex, port charges, handling charges, agent fees and other similar charges and delivery to site.
iii. The Contractor shall keep upon the site a storekeeper who shall keep records of all materials brought on the site and taken from the site, which documents shall be made available for inspection by the Employer.
iv. On the date of the signing of the contract, the Contractor is to make a review of materials he will require for the execution of the works and he is to place orders for such materials without delays in order that materials are delivered to site, as they are required. All materials which can be stored on site with the approval of the Employer without deterioration or damage are to be purchased and stored as soon as possible.
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v. The Contractor will be required to carry out tests of materials on the site and to prepare, pack and dispatch materials and goods to a nominated testing laboratory when instructed to do so by the Employer and he shall allow here for all the costs in connection therewith (including the making of concrete cubes). The Contractor’s attention is drawn particularly to the requirements in the concrete work section of the specification.
vi. Allow here for furnishing to the Employer such information as he shall require in connection with the works including a statement showing the number of workers local and from outside the area employed in all trades daily and delivery notes for materials received on site.
The Contractor shall observe the following technical specifications and shall carry out all work in skilled manner associated with modern and adapted methods of constructions engineering.The Bidder shall base his tender on the following: International Regulations and Standards (e.g. DIN)a). Standard International Units (SI units) for all drawings, units,
measurements etc. Unless otherwise stated, the Technical Specifications will in any case
take precedence over similarly or differently worded standards. The Bidder shall follow standardized design for all works to be
accomplished (see design and superstructure design, and schematic examples are given in this Section – Drawings)
The Bidder may present critical comments on the content and the specifications of this document and shall present any recommendation for proper and economic solutions for all works to be executed.
The Bidder is expected to have sufficient knowledge of the geography and hydrogeology as well as the current political and infrastructural situation in Sierra Leone.
6.1.3 Contractor’s Obligations
The sub clauses below are the sole responsibility of the Contractor.
a. Provide all necessary plant, tools and trucks for the proper execution and completion of the whole works.
b. Provide all necessary temporary scaffolding for the proper execution of the Works, alter and adapt as necessary and clear away on completion.
c. Provide all site administration including a Foreman – in – charge. Safeguard the works, materials, plant etc. against damage or theft including providing all necessary watching and lighting.
d. Provide for carefully covering up and protecting the Works including those by nominated sub-contractors or any adjoining property exposed by these works from inclement weather.
e. The Contractor should note particularly that no concrete work, block work or other work liable to become damaged by rain, may be carried out during rainy weather except with the written permission of the Employer and that all such work must be covered up at night and adequately protected from rain.
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f. The Contractor shall avail himself of all reasonable means and aids to building inclement weather, which are currently available and use his best endeavors to prevent or to minimize delays, which might result from bad weather. He should allow here or in his prices for so doing. The Employer will not grant an extension of time for delays which have been incurred through failure to comply with these recommendations.
g. Provide and maintain temporary office accommodation for the Contractor’s staff, watertight sheds for the storage and protection of materials, tools and equipment and a watchman’s hut. The positions of all temporary accommodations are to be agreed with the Employer.
h. Provide and maintain in a clean and odour free condition where directed temporary toilet accommodation for the use of all workmen. Wherever possible, such accommodation shall be of the flushing type and be temporarily connected to a suitable septic tank.
i. Such temporary buildings must be cleared away and the site made good on completion of the Works.
j. Provide for costs incurred and comply with all safety, health and welfare regulations appertaining to all work people (including those employed by any sub-Contractor) employed on the site.
k. Provide adequate First Aid equipment which shall be available for the use of all workmen during working hours.
l. Provide for all costs in respect of all work people for:-
i. Redundancyii. Annual and public holidaysiii. Traveling time, expenses, fares and subsistence
m. Provide for removing all rubbish from the site both as it accumulates and at completion.
n. Provide for locating laterite borrow pits, inclusive of all negotiations and costs incurred for the right to extract the materials.
o. Allow for protection of the site including the provision of temporary barrow runs and for making good on completion including filling in all depressions caused by vehicular traffic.
p. Provide for complying with all other statutory obligations not herein before mentioned.
q. Allow also for indemnifying the Employer against any liability loss, claim or proceeding in respect of damage to highways or bridges, caused by extra-ordinary traffic in connection with the execution of the works.
6.1.4 Instructions to Contractor
The project location is Mathoir Community in Tonkolili District.
i. Bill of Quantities
The Bidder shall check that none of the pages of the Bill of Quantities are missing or duplicated and that there are no parts of the document that are indistinct. Should the Bidder find any discrepancy he shall notify the Employer.
No alteration should be made to the text of the Bill of Quantities unless expressly instructed in writing by the Employer.
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ii. Prices
Prices or rates should be entered against each item in the Bill of Quantities and any item not priced shall be deemed to have been allowed for by the Contractor elsewhere in the Bill. Unit rates shall include materials, labour, 5% government tax and any overheads or profit margin that the Company deems appropriate.
In the event of claims for loss and expense, no claims can be made in respect of items not priced in the Preliminary item in the BOQ and the Contractor will be required to comply where applicable with the provisions of the un-priced item.
All rates and amounts inserted in the Bill shall be in Leone.
The Contract is duty paid (no waiver on Customs duty shall be granted). As stated above the tender price is to be inclusive of the 5% tax which will be withheld and paid by Concern to the GoSL Revenue Service on behalf of the Contractor.
iii. Document
The Document submitted by the Contractor should consist of:i.ii. One copy of the Bill of Quantities with all rates and amounts
inserted.iii. All drawings supplied to the Client.iv. Completed Work Plan
All of the above should be enclosed in a sealed envelope, which should be marked to indicate the identity of the Contractor.
6.1.4.1 Control of Work and Material
a. The hardcore is to be approved clean laterite or other approved hard materials to pass 75mm ring. It shall be laid in 150mm layers under all ground floor slabs, paved areas or wherever indicated on Drawings, well rammed and consolidated. The top layer shall be blinded with a layer of fine stone; sand or other approved fine materials to receive concrete.
b. The materials shall be protected from rain and inclement weather all to the satisfaction of the engineer.
c. The cost of covering materials shall be deemed to be included in the offer for the brickwork and masonry.
d. The masonry works shall be of local materials e.g. concrete blocks, plastered bricks, rocks.
e. The quality of each material shall conform to the requirements of the respective standards.
f. The binding agents shall be stored dry. The aggregates shall be free of impurities and protected from being contaminated.
The Construction Engineer reserves the right to control the work performance at any time, to give instructions on variations and to control the material and equipment on its correspondence with the list of equipment and the technical
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specifications hereunder. The material refused by the Concern Construction Engineer shall be removed from the site immediately.
(a) Notice to the Engineer
Works shall start with the location of the site and the handing over of the site to the contractor.
The Contractor shall inform the Construction Engineer in good time about the start and completion of the following works: Twenty four hours before the start of each activity that needs the presence of the Construction Engineer
* Telephone notification is enough in each instance
(b) Concrete Mix for foundation & bearing pilesThe concrete used for the foundation & bearing piles (surface structure) shall be prepared using normal Portland cement with a mixture of coarse and fine aggregate. The concrete shall meet the following specifications:Fine aggregate: 0.15mm to 9.5mm Coarse aggregate: 2.4mm to 40.0mm Minimum Cement Content: 320kg/cubic meter Compressive strength at 28 days: 25MPa. Concrete mix ratio: 1:2:4
Water used for the mixing concrete and for curing shall be clean and free from injurious amounts of oil, acid, alkali, organic matter or other deleterious substance. It shall be equal to potable water in physical and chemical properties. The foundation for the elevated tanks should be placed upon good foundation with ample stability. The bearing piles should be built of reinforced concrete and fixed squarely upon the foundation. The body of the elevated tank and the supporting joint shall be jointly joined as a steady resistant against earthquakes shocks and wind pressure.
PART II – CONCRETE WORKS
6.2 CONCRETE WORK-General
(a) Concrete and Reinforced Concrete
All concrete construction shall be in accordance with DIN 1045 or BS 8110.The Contractor shall execute the concrete works following international standards and with recommended bar diameter, according to structural suitability predefined in the design.
(b) Cement
Cement shall be ordinary Portland cement from approved manufacturers or their agents, delivered in sealed bags, protected from the weather during transit and storage. Each consignment shall be certified by the manufacturers or their agents and complying with DIN 1164 or equivalent international
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standards. Cement supplied in bags may only be stored in dry sheds (weather-proof) on a raised impervious floor on wooden planking for no longer than three months.
(c) Sand
Clean, hard, sieved sand with grain size diameters up to 1- 2 mm shall be used.
(d) Aggregates
Aggregates shall be composed of graded stones, 6 – 18 mm in diameter. Wherever possible the local aggregates shall be used. The aggregates shall be clean, free from dust, salt, mica, dirt, clay, loam and organic matter and washed and screened as necessary. Aggregates shall be stored in clean conditions.
(e) Water
Water for making concrete shall be clean and free from injurious amounts of oil, acid, alkali, organic matter or other detrimental matter. The volume of water / cement ratio shall be 0.55% by weight, which means that for one bag of cement of 50 kg, using the below mentioned design mix, 27 litres of water would be needed.
(f) Design Mix
Concrete works for which a design mix is not specified, a mixture of 1:2:4 (i.e. one head pan of cement to two head pans of sand and four pans of aggregate) shall be used.
(g) Reinforcing steel
All reinforced concrete parts of the strength class B15/ C15 shall have at least a minimum reinforcing of 15% of the cross section.
Before use, any matter liable to impair the bond, e.g. dirt, grease, organic matter, loose rust, shall be removed from the steel. The compressive and the tensile reinforcement (main reinforcement) shall be secured to the transverse and distribution bars or stirrups by means of binding wire.
The reinforcing bars shall be interconnected to form a rigid cage and shall be so secured in their specified position. Spacers which do not impair corrosion protection must ensure that they are not displaced during placing and compaction of the concrete.
The top reinforcement shall be secured against being pushed down. In pre-cast components, the reinforced bars shall be on account of the often very small bearing depth provided, be cut to its correct length with particular accuracy and be installed with great care, especially at bearing and points where hinged connections are formed.
The bond between reinforcement and concrete shall be ensured by a sufficiently thick and dense covering of concrete over the steel. This cover shall be able to protect the steel permanently from corrosion.
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(h) Concrete work
Transport and placing of concrete shall be done by means which will prevent segregation or loss of the ingredients.
i. The placing of concrete in hot weather requires the following steps to be taken:
ii. Watering of the sub grade, formwork and steel reinforcement before placing concrete. Care should however be taken to ensure that there is no free-standing water
iii. Stacking the aggregates under shade or spraying the aggregates with water, but there shall be adequate drainage of the sprinkled water
iv. Covering the freshly laid concrete with burlap, polyethylene or similar material
v. Sprinkling the freshly laid concrete with water after one hour or sovi. Speedily placing and finishing the concrete
(i) Required concrete strengths
All reinforced concrete shall have the strength class of B15/ C15. Only the prefabricated reinforced concrete parts shall have the strength class of B10/ C10.
All concrete work shall be carried out in accordance with the relevant National Standards except that in case the National Laws give no regulation or specification, specifications mentioned in this Chapter shall take precedence and prevail. All cement used in the works shall be from an approved source and shall conform to BS 12 or ISO 2001 for Portland cement.
The cement shall be delivered to the site in properly sealed bags, and shall be stored in a properly weatherproof shed having a raised floor. Each consignment shall be kept separate and clearly marked with its date of arrival. Every facility shall be given to the Employer for testing each consignment. The cement shall be used in the same order as its arrival on site, and no cement shall be used in the works that has been affected by moisture or age. Any damaged or affected cement is to be removed from the works immediately. No admixtures shall be made to any cement o formwork unless specified by the Employer.
The Aggregate used in all grades of concrete shall be hard, naturally occurring sand, gravel or stone, and shall conform in all respects to standard accepted by the Ministry of Works, and Maintenance. The aggregate shall be from an approved source and shall be clean and free from adherent coatings, organic materials, sulphates likely to affect the quality of the concrete.Fine aggregate shall be river or pit sand thoroughly washed with clean water until all salts, clay or other impurities are removed and complying with BS 882.
All cement used in the works shall be from an approved source and shall conform to BS 12 or ISO 2001 for Portland cement.
The cement shall be delivered to the site in properly sealed bags, and shall be stored in a properly weatherproof shed having a raised floor. Each consignment shall be kept separate and clearly marked with its date of arrival. Every facility shall be given to the Employer for testing each consignment. The cement shall be used in the same order as its arrival on site, and no cement shall be used in
pg. 70
the works that has been affected by moisture or age. Any damaged or affected cement is to be removed from the works immediately. No admixtures shall be made to any cement o formwork unless specified by the Employer.
The Aggregate used in all grades of concrete shall be hard, naturally occurring sand, gravel or stone, and shall conform in all respects to standard accepted by the Ministry of Works, and Maintenance. The aggregate shall be from an approved source and shall be clean and free from adherent coatings, organic materials, sulphates likely to affect the quality of the concrete.Fine aggregate shall be river or pit sand thoroughly washed with clean water until all salts, clay or other impurities are removed and complying with BS 882.
6.2.1 Manufacture of concrete
6.2.1.1 Concrete mixes
Concrete classes shall be specified in the final design in accordance with the following table:
6.2.1.2 Class of ConcreteClass III Class II Class I
Characteristic compressive strength (N/mm2) (28 days)
20 30 40
Maximum water/cement ratio 0.6 0.55 0.40Minimum cement content (kg/m3) 270 300 320Maximum cement content (kg/m3) 350 450 450Maximum size of aggregate (mm) - 25 25
6.2.3 Classes of concrete
a). These shall generally be based on cube strength according to the following table:
i. Class I of strength 400 kg/cm 2 Structures exposed to waste water, sludge and post-tensioned prestressed concrete.
ii. Class II of strength 300 kg/cm 2 Reinforced concrete not exposed to waste water or sludge including roads, mass concrete in benching anchor blocks etc.
iii. Class III of strength 200 kg/cm 2 Blinding concrete and mass concrete fill under foundations.
b) Type V Sulphate Resisting Portland Cement shall be used throughout, according to ASTM C 150 and shall have maximum concentration of Tricalciumaluminat (3CaO · Al2O3) of 3%. Before any concrete is supplied, the Contractor shall provide the Employer on request with the following information:
i. The nature and source of each constituent material
pg. 71
ii. The proposed quantity of each ingredient including admixtures, per cubic meter of fully compacted concrete
iii. Appropriate existing data as evidence of satisfactory previous performance for target
iv. mean strength, current margin, workability and water/cement ratio or full details of tests on trial mixes
No change in the nature of source of any constituent material and no change greater than 20 kg/m³ in the cement content from that last declared, shall be made without the Employer's approval.
Concrete Mix design of structures with contact to liquid or sludge shall have a mix design to obtain water tight concrete with a water penetration depth limited to 25mm (e.g. by micro silica addition (5-10%) shall be restored.
c). Chloride content
The total chloride content of the concrete mix arising from the aggregate, together with that from any admixture and any other source, shall not in any circumstances exceed the following limits expressed as percentage chloride ion by weight of cement:
Type of use of Concrete Maximum total chloride content
expressed as percentage ofchloride ion by weight of
cement
Prestressed concrete, Steam-cured structural 0.1concreteReinforced on plain concrete made with 0.2sulphate-resisting cement
d).Sulphate content
The total sulphate content of the concrete mix arising from the aggregate, together with that from the cement, any admixture and any other source, shall not exceed 4 percent expressed as SO3 by weight of cement.
e).Alkali-aggregate reaction
The Contractor shall secure, that alkali-aggregate reaction will not occur in the concrete. Generally the use of cement with less than 0.6 per cent alkali concentration expressed as a soda (Na2O) equivalent will be deemed to satisfy this requirement.
6.2.4 Mix content design
The concrete shall be designed and prepared so that:
i. it shall be homogeneous
pg. 72
ii. it shall have workability such that it shall be enabled to be placed and be satisfactorily compacted
iii. it shall have strength and endurance specified for the works.
a).Obligations
The proportions of the constituent materials for the preparation of the concrete shall be the results of laboratory mix design, carried out by Certified Laboratories. The mix design for every class of concrete shall be done at the beginning of the contract and must be repeated:
i. when there is a change of source of aggregatesii. when the aggregates show different propertiesiii. when there is a change of the admixtures or the type of cement
b). Required strength
The required strength shall be determined according to applicable American or National Standard. Compression strength of the concrete should be checked according to this standard.
c). Elements of mix design
The concrete mix design shall be done with the actual aggregates, the cement, the ad-mixtures and the water which are going to be used in the Works. These materials shall be brought to the laboratory by the Contractor for testing before use. The proportions of the materials that result from the mix design shall ensure the following for the mix; optimal workability, strength, tightness, endurance and compaction. The workability specified by the designer of the Plant shall be expressed in centimetres of slumping.
6.2.5 Production of concrete
a). Access to production areas
The Employer shall at all times have access to all the constituent materials and to the manufacture of concrete for the purpose of inspection and sampling or testing.
b). Batching and mixing
The solid constituents of the concrete mix shall be measured by weight. A separate weighing devise shall be provided for the cement. Alternatively, the cement may be measured by using the number of whole bags in each batch. The added water may be measured by either volume or weight. Water shall not be added after concrete has left the mixer.
During production of concrete, solid admixture shall be measured by either weight or volume.When weighing aggregates, due allowance shall be made for the weight of water that would normally be found in the aggregates under prevailing conditions. All measuring equipment shall be maintained in a clean and serviceable condition. Concrete mixers shall comply with the relevant ASTM standard. The mixing time pg. 73
shall not be less than that used by the mixer manufacturer in assessing its performance.
Mixers shall be thoroughly cleaned before any fresh concrete is mixed and all mixing plant shall be thoroughly cleaned before changing from one type of cement to another. The first batch of concrete through the mixer shall contain only two-thirds of the normal quantity of coarse aggregate.
c). Workability
The workability of fresh concrete shall be such that the concrete can be handled and placed without segregation and, after compaction, shall completely fill the formwork and surround all reinforcement and ducts. The quantity of water used shall not exceed that required to produce concrete with the appropriate workability to be placed and compacted in the required location.
d). Concrete produced off-site
Concrete produced off-site shall not be used in the Plant.
6.2.6 Control of concrete quality
All cement used in the works shall be from an approved source and shall conform to BS 12 or ISO 2001 for Portland cement.
The cement shall be delivered to the site in properly sealed bags, and shall be stored in a properly weatherproof shed having a raised floor. Each consignment shall be kept separate and clearly marked with its date of arrival. Every facility shall be given to the Employer for testing each consignment.
The cement shall be used in the same order as its arrival on site, and no cement shall be used in the works that has been affected by moisture or age. Any damaged or affected cement is to be removed from the works immediately. No admixtures shall be made to any cement o formwork unless specified by the Employer. The Aggregate used in all grades of concrete shall be hard, naturally occurring sand, gravel or stone, and shall conform in all respects to standard accepted by the Ministry of Works, and Maintenance. The aggregate shall be from an approved source and shall be clean and free from adherent coatings, organic materials, sulphates likely to affect the quality of the concrete.
Fine aggregate shall be river or pit sand thoroughly washed with clean water until all salts, clay or other impurities are removed and complying with BS 882.When concreting is in progress, the Contractor shall carry out the following tests at regular intervals, for which he shall maintain all necessary equipment and instruments. The Contractor shall keep records of the tests as described and shall submit copies of all test results to the Employer.
6.2.7 Concrete used in the works shall be to the following qualities.
Quality Max size Max water Min CrushingNominal of coarse cement ratiostrength of works
Aggregate by weight test cube (MN/M2) 7 days 26 days
1:2:2 20mm 0.70 21 28
pg. 74
1:2:3 20mm 0.70 14 211:3:6 25mm 1.00 8 1.5
Mix 1:2:2 are used for all reinforced concrete, mix 1:2:3 are used for blinding concrete except if otherwise stated on drawings. For measurement by weight, due allowance shall be made for weight of water carried by the aggregate, the actual amount of water added to the mixer being reduced accordingly.
a. For measurement by weight, due allowance shall be made for weight of water carried by the aggregate, the actual amount of water added to the mixer being reduced accordingly.
b. For measurement by volume, gauge boxes of sizes corresponding with the proper quantities of sand and aggregate shall be used for gauging the materials and in such a way that the correct proportion of the ingredients can be easily verified. Gauge boxes for the various qualities of concrete are to be proportioned in such a manner as to avoid dividing the content of bags of cement.
c. The cement shall be measured in whole bags of 1 Cwt. or 50 kilos and shall in no circumstances be measured by volume.
d. The dry materials shall be mixed for at least three turns in a mechanical batch mixer of an approved design, after which the required amount of water shall be added gradually while the mixer is in motion and the concrete mixed for at least two minutes until it is of a uniform colour and consistency.
e. When work stops, including stoppages for meals, the mixer and all handling plant is to be washed out with clean water. Concrete shall be placed within 15 minutes of mixing and on no account shall it be remixed by the addition of water in order to make it easier to place for any other purpose.
f. The approval of the Employer’s representative must be obtained before any hand mixing is commenced. Not more than half cubic yard shall be mixed at a time, and the hand mixing shall be carried out on a properly constructed platform of concrete. The materials shall be turned over and thoroughly mixed three times in a dry state, the correct amount of water should then be added and the materials turned over three times in a wet state, until a uniform colour and consistency is achieved.
g. During windy weather, proper precautions shall be taken to prevent the cement from been blown away during proportioning and mixing.
h. During wet weather, adequate precautions shall be taken to protect the cement and to ensure proper mixing. No concreting shall be carried out during periods of heavy rain.
i. Before concreting any major sections of work such as foundations, retaining walls and lintels the Contractor shall give adequate notice to the Employer and obtain his approval. If due notice is not given, the Contractor may be required to remove any defective concrete and make good at his own expense.
j. Concrete is to be worked well up against the formwork faces to ensure that it is free from honeycombing. The method of carrying out this work is to be to the entire satisfaction of the Employer.
pg. 75
k. Care must be taken not to disturb the concrete by direct or indirect loading, striking of forms or otherwise until it has hardened sufficiently. No formwork containing or struts supporting concrete shall be struck until the period of curing has expired.
l. Concrete shall be thoroughly compacted during the placing and carefully worked round the reinforcement, around built-in-elements such as bolts and into the corners of the formwork.
m. It shall be the Contractor’s responsibility to ensure that no damage, distortion, overloading or undue deflection is caused to the structure by the striking of formwork.
n. All construction joints in concrete work shall be against forms and made in approved positions, rebated if required by the Employer.
o. Immediately before placing new concrete against an existing face, the face shall be roughened, cleaned, well wetted and brushed over with a thick coat of neat cement slurry.
p. Where defects occur to members generally, including framed and stored joinery, the work shall be taken down and repaired or renewed including any necessary making good and redecoration at the Contractor’s expense and to the satisfaction of the Employer.
6.2.8 Tests on materials
Materials represented by samples producing unsatisfactory test results shall not be used in the Works.
a). Aggregate grading tests
The rate of testing during concreting shall be in accordance with the following table, but not less than two tests per week for each grade of aggregate. Tests shall be in accordance with ASTM C33 (or) National Standard and the results shall be plotted on a graph on which the limits of tolerance permitted shall also be clearly marked. A copy of this graph shall be submitted to Employer immediately after completion of the test and a further copy retained on Site.
Maximum volume of aggregaterepresented by test
Sand 1 000 m³Fine crushed aggregate 1 000 m³Coarse crushed aggregate 1 000 m³
i. Tests for natural moisture content of fine aggregate
The moisture content of aggregate particle size fractions of 4 mm and less shall be determined before the commencement of any concreting operations and when any change in moisture content is apparent.
b) Tests on concrete
All sampling, curing and testing shall be carried out in accordance with ASTM C39 or National Standard, unless specified otherwise.
c) Workability – slump
Prior to pouring, the workability of all concrete shall be tested. The slump shall not vary from that of the corresponding approved trial mix described in ACI 301
pg. 76
or National Standard. The test is carried out in accordance with BS EN 12350-2, Testing fresh concrete. Slump test.
d) Strength
The concrete shall be tested by taking cubes directly from the mixers. Compression strength of these test cubes shall be according to the compliance criteria. The test cubes taken for compliance control shall be 10 or 12 cm edged cubes. The test cube that will be used in compliance control will have the same shape and dimensions as those used for mix design. Except for the test cubes necessary for compliance control, the Employer may request the Contractor to take more test cubes to control the strength at an earlier age, control the concrete hardening progress or make other special tests.
Test cubes with defects from bad compaction or injury will not be included in the compliance control. For this reason, one more cube shall be taken in each sample. If after the removal of forms no cube is found to be defective, the additional cube will not be included in the compliance control but can be used to control strength at an earlier age. The concrete placed each day in each separate concrete class, shall be one batch represented by one sample.
If the work requires continuous placing for more than one day (sliding formwork), the concrete shall be divided into theoretical batches, according to the construction stage (e.g., day placing, night placing). All cubes shall be marked with an identification number or letter. The Contractor shall record the following information immediately after each cube is made and shall forward copies to the Employer and the testing laboratory:
i. Identification number or letter of cubeii. Date of castingiii. Location of batch of concrete in Works from which cube was takeniv. Mix proportionsv. Cement contentvi. Water/cement ratiovii. Maximum size of aggregateviii. Category of cement usedix. Workabilityx. Temperature when cubes were castxi. Temperature when workability test was carried out
Curing of the cubes shall continue until they are tested.
6.2.9 Transport and placing of concrete
6.2.9.1 Placing concrete – general
Place concrete in accordance with ACI 301, ACI 318 and ACI 304. Concrete shall be transported from the mixer and placed in the Works as rapidly as practicable by methods which will prevent segregation or loss of any of the ingredients and which will maintain the required workability. It shall be deposited as near as pg. 77
practicable to its final position to avoid re-handling. Concrete, which has been partially set during transportation, shall not be used. All plant and equipment used for the transportation of concrete shall be kept clean. The operation shall be organized to provide a continuous supply of concrete in order to avoid unnecessary joints.
No concrete shall be placed until the formwork and reinforcement sections comply with the Final Design. The Employer has to be notified not less than 24 hours in advance of each placing of concrete.
Concreting shall then proceed continuously over the area between construction joints. Fresh concrete shall not be placed against in situ concrete that has been in position for more than 60 minutes, unless a construction joint is formed in accordance with this Specification. When in situ concrete has been in place for 4 hours, no further concrete shall be placed against it for a further 20 hours.
Concrete shall be deposited in horizontal layers to a compacted depth not exceeding 450 mm where internal vibrators are used, or 300 mm in all other cases. Unless otherwise approved, concrete shall not be dropped into place from a height exceeding 2.5 meters. Where trunking is used, this height including any vertical end section of trunking shall not exceed four meters. During placement of concrete, a competent steel reinforcement fixer shall be in attendance on the site to adjust and correct the position on any reinforcement, which may be displaced.The Contractor shall keep a complete record of work showing the time and date of placing of the concrete in each part of the Works. A copy of this record shall be made available when required by the Employer.
6.2.9.2 Pumping concrete
Concrete shall be placed by pumping only when approved. Concrete mixes to be placed in this manner shall be designed to meet the requirements of the specified grade of concrete and shall also be such as to ensure that there will be no bleeding or segregation of the constituents during pumping.Concrete mixes not designed for pumping in the first instance shall be checked as to their suitability for pumping well in advance of pumping operations so that any necessary adjustments to the mix can be made.
6.2.9.3 Compaction of concrete
During placing, concrete shall be carefully worked around the reinforcement, pre-stressing tendons, and cast-in members and spread into all parts of the formwork and shall be thoroughly compacted to ensure that a dense homogeneous mass, free of voids, is attained. Compaction of concrete in its final position shall be completed within 30 minutes of discharge from the mixer.
If the concrete is carried in purpose-made agitators operating continuously, the time shall be within two hours of the introduction of the cement to the mix or such lesser time in high ambient temperatures that Employer deems appropriate, and within 30 minutes of discharge from the agitator. All concrete shall be compacted by the use of mechanical vibrators. Sufficient vibrators in a serviceable condition shall be on Site so that spare equipment (minimum 2) is always available in the event of breakdown.
pg. 78
Mechanical vibrators shall be of an approved pattern and of a frequency not less than 80 Hz. The size of the head of immersion-type vibrators shall be appropriate to the section of the member of the compacted and to the spacing of reinforcement. Unless otherwise approved, external vibrators may be used only in precast concrete. Where vibration is applied externally, the design of formwork and the disposition of vibrators shall be such as to ensure efficient compaction and to avoid surface blemishes.
Vibrators shall be used by skilled operators only. Immersion vibrators shall penetrate the full depth of the layers and, where the underlying layer is of fresh concrete, shall enter and revibrate that layer to ensure that successive layers are well bonded together. Over vibration causing segregation, surface sweating or leakage through formwork shall be avoided. Immersion vibrators shall be withdrawn slowly to prevent the formation of voids. Vibrators shall not be used to work the concrete along the forms, or in such a way as to damage formwork, or other parts of the structure, or displace the reinforcement or other embedded items. Care shall be taken to avoid disturbing freshly compacted concrete and reinforcement.
6.2.10 Joints
Joints in concrete structures shall be provided in accordance with the drawings and shall meet ACI requirements.
a) Construction joints
The proposed position of construction joints not described on the drawings shall be submitted by the Contractor well in advance of concreting. Unless otherwise approved, the upper surface of concrete lifts in walls and columns shall be horizontal, and in all other construction joints it shall be vertical.
Vertical joints shall be formed by stopping-off boards against which the concrete can be properly compacted. These boards shall be holed or slotted where necessary to allow the passage of reinforcement and water stops. As soon as possible after the removal of shuttering in vertical joints or after the concrete has set in horizontal joints, the surface sweat shall be removed to expose the coarse aggregate and leave a solid surface free of mould-oil and grease.
This shall be achieved by wire brushing or pressure spraying with water while the concrete is still fresh. If this is not possible, sweat may be removed by mechanical means, provided that the concrete is at least 24 hours old, care being taken not to loosen the coarse aggregate.
Before concreting is resumed at a joint, roughened surfaces shall be washed clean of all loose material. These surfaces shall be thoroughly wetted, preferably by soaking over-night, care being taken to avoid free water on horizontal surfaces immediately before concreting.
Notwithstanding the above, water stops shall be incorporated in construction joints in water-retaining structures located in such positions where external visual inspection during testing is not possible (e.g., ground slabs). In all other construction joints of the tanks, epoxy resin shall be applied for the old and fresh
pg. 79
concrete joint. Special care must be given for the joints in the sludge digestion tanks.
b) Expansion joints
Expansion joints shall be filled with an appropriate compressible joint-filler, placed in accordance with the manufacturer's recommendations. Dowel bars shall be provided at the spacing indicated on the Drawings, as well as water stops if required.
6.2.11 Water stops
Approved PVC or rubber water stops properly jointed in accordance with the manufacturer's instructions and including all necessary moulded or prefabricated junction pieces, shall be used. At construction joints, metal-strip water stops may be used, subject to approval of the proposed details.The water stops shall be installed so that they are held secure in their correct position during the placing of the concrete, which shall be fully and correctly compacted around the water stops so that no voids or porous areas are left.
Where reinforcement is present, adequate clearance between this and all water stops shall be left to allow proper compaction of the concrete. The positions of nails in the surface water stops shall comply with the manufacturer's recommendations. No other holes shall be made through water stops. Surface-type water stops shall be used only with horizontal or sloping slabs cast directly on to blinding concrete.
6.2.12 Protection from extremes of weather
a) Rainfall
Concrete shall not be placed during heavy rainfall. Freshly laid concrete shall be suitably protected by tarpaulin or other means, so that if heavy rain falls before the concrete has sufficiently hardened, there will be no chance of the rain washing away the cement and fine aggregate or of marking the finished surfaces.
b) Cold weather
Unless special arrangements are made and agreed with Employer, no concreting shall be carried out when a descending air temperature in the shade falls below 3o C, nor shall it be resumed until an ascending air temperature in the shade reaches 10o C.
When concreting is carried out in cold weather, the Contractor will be held responsible for ensuring that the temperature of the concrete does not fall below 5o C for five days after placing and shall obtain approval of the methods he intends to use. No materials with a temperature of 5o C or below. Before placing concrete, all contact surfaces, including formwork, reinforcement, adjacent concrete and the ground, shall be free of ice, snow and frost.
c) Hot weather
pg. 80
The Contractor takes into account and neutralizes the effects of high temperatures on the storage and use of any admixture proposed. Water-storage tanks and cement silos shall be shaded from prolonged strong sunlight. Where shading is not possible, all external surfaces shall be covered and painted with a reflective coating. Water supply pipes shall be buried underground. Aggregates shall be stored in the shade but should be exposed to the wind as much as possible, e.g., in an open-sided shed. Fog nozzle spraying shall be used on the coarse aggregate during extreme heat conditions.Wherever practicable, concreting shall be carried out during the early morning or late evening. Formwork shall be shaded from direct sunlight prior to, during the placing of concrete and until removed. The temperature of concrete when deposited shall not exceed 32°C. Conform to ACI 305 R when concreting during hot weather.
d) Curing and protection of concrete
Immediately after pouring and for seven days thereafter, the concrete shall be protected against the harmful effects of the weather including direct sunlight, drying out by the wind or evaporation, and rapid temperature changes. The method of curing and the period of application, employed should prevent loss of moisture from the concrete. Reliable methods of protection and curing shall be adopted and applied. All concrete surfaces (except those to which concrete has subsequently to be bonded) shall be protected by a suitable liquid curing membrane. Application shall be made by spray or as may otherwise be recommended by the manufacturer. The curing membrane shall be applied on horizontal surfaces immediately after placing the concrete and on vertical surfaces immediately after removal of the formwork.
6.2.13 Reinforcement and pre-stressing
a) Steel reinforcement
All steel reinforcement used in the Works shall be free of mill scale, loose rust and any other substance that could prevent the proper bond between concrete and steel. The steel shall be bent and cut accurately to the shapes indicated on the drawings and bar schedules.Reinforcement shall be bent cold and may be bent on site, or alternatively off-site, in an approved reinforcement steel manufacturer or suppliers' works Welding of steel reinforcement shall not be allowed unless approval has been obtained.
All intersections of reinforcing bars shall be wired firmly with suitable iron wire. The end of all wire shall be turned into the main body of the concrete and shall not be left in con-tact with the formwork. The reinforcing steel shall be placed accurately in accordance with the drawings. Particular care shall be taken to ensure that the concrete cover shown on the drawings is maintained to the reinforcing bars.
Concrete spacing blocks securely wired to the reinforcement shall be used for this purpose. The Contractor shall provide chairs to support the top reinforcement layers in slabs.Great care shall be taken during concreting not to disturb the reinforcement. Any reinforcement displaced shall be refixed in position by a competent steel fixer. If reinforcement is found to be displaced after the concrete has hardened and if, in
pg. 81
the opinion of Employer, the stability or strength of the structure could be adversely affected, the Contractor shall cut away the defective material and recast it in its proper form.
b) Pre-stressed construction
Pre-stressing wire and strand and related components shall be kept free of loose rust, oil and any other substance which might impair bond with the grout or concrete. The Contractor shall provide the Employer on his request with a fully detailed program covering all aspects of the pre-stressing operation including the grouting of ducts. The intended method of checking the force in each wire or strand shall also be given.
Detailed records, including any irregularities shall subsequently be kept available.Concrete shall not be stressed until it has reached at least the age at which two test cubes taken from it attain the minimum concrete strengths at pre-stressing specified. The test cubes shall be cured in similar conditions to the concrete from which they were taken. The Contractor shall make sufficient cubes to demonstrate that the required strength of concrete at the time of loading has been reached.
6.2.14 Formwork
a) Construction of formwork
The formwork shall be so designed such that it can safely resist all vertical and horizontal forces, including the effect of the concreting rate and the method of compaction.
The formwork shall be sufficiently tight that fine mortar of the concrete shall not flow out at the joints during placing and compaction. Timber formwork shall not be exposed unprotected to the sun and wind for too long a time. It shall be thoroughly wetted in good time before concreting is carried out.
Formwork and moulds, especially those for pre-cast reinforced concrete components, shall be constructed with the best possible dimensional accuracy.
They shall, particularly for compaction with vibrator or on vibrating tables, be of strong and suitably rigid construction and be secured against deformations during concreting and compaction.
Formwork shall be cleaned before concrete is placed in it. Only suitable formwork oil, which will not diminish the strength of the concrete, shall be permitted.
The formwork shall not be removed from a structural component until the concrete has hardened sufficiently.
The concrete is to be regarded as sufficiently hardened when the component has attained such strength that it can resist all loads acting at the time of removal of the formwork.Formwork for the pre-cast parts and the well shaft shall be metal, whereas formwork for the in-situ parts can be made of wood.
pg. 82
Formwork shall include all temporary or permanent forms required for forming the concrete and shall be carried out in accordance with applicable provisions of ACI 117, 301 & 347.Formwork shall be sufficiently rigid and tight to prevent loss of mortar from the concrete and to maintain the correct position, shape and dimensions of the finished work. Form-work shall be constructed so as to be removable from the cast concrete without shock or damage. Adequate openings shall be provided in the formwork to permit access of vibrators into all areas. Where internal metal ties are used, no permanently embedded metal part shall be closer to the surface of the concrete than the specified cover of the reinforcement. All holes left after the removal of the ties shall be filled with mortar to match the required quality of the finish.
In the fluid tanks, the above-mentioned holes shall be treated specially and filled with inflating material so that full tightness and anti-corrosion protection is secured. The contractor shall use the appropriate materials and methods for sealing of the holes. Formwork shall give access to the preparation of joint surfaces before the concrete has hardened. Formwork shall be provided in the case of all slopes greater than 15o from the horizontal, unless otherwise approved.
Concrete shall be poured against excavated faces, only where shown on the drawings, unless otherwise approved. Any excavated face, against which concrete is being poured, shall be firm and free of loose material; unstable faces not steeper than 1 horizontal to 2 vertical may be prepared by applying a sealing layer of mortar, of a minimum content of 200 kg/m³ of cement, immediately after they are exposed.
b) Cleaning and treatment of forms
The inside faces of all temporary forms shall be coated evenly with a suitable release agent. The form release agent shall have a maximum 350 g/l volatile organic compound (VOC’s) that will not bond with, stain or adversely affect concrete surfaces. Contact with reinforcement and other embedded items shall be avoided. Where the concrete surface is to receive an applied finish, care shall be taken to ensure the compatibility of the release agent with the finish. Immediately before concreting, all forms shall be thoroughly cleaned out.
c) Removal of formwork
The formwork striking times shall be determined by the Contractor but shall in no case be less than the period required by cubes, stored as far as possible under the same conditions as the work they represent, to develop a strength of twice the stress to which the section of work will be subjected, but not less than 10 N/mm². Any damage caused by premature striking, including unacceptable deflection due to shrinkage and creep, shall be made good at the Contractor's expense. Employer shall be informed in advance when the Contractor intends striking any formwork.
d) Pockets and openings for mechanical and electrical installations
pg. 83
Holes smaller than 150 mm x 150 mm, in slabs or walls reinforcement may be displaced locally around the opening. For holes larger than 150 mm x 150 mm additional reinforcement bars shall be placed, equal to the bars cut, plus diagonal bars of the same diameter enclosing the opening.Machinery bases and bolts shall be grouted using cement grout with an appropriate ex-panding agent. Where dissimilar metals are embedded in the concrete in close proximity, measures shall be taken to ensure that electrolytic corrosion does not occur.
6.2.15 Surface finish
a) Formed finish
Class F1 This finish is attained by the use of properly designed forms of closely jointed sawn boards, steel panels or other suitable materials. Small blemishes caused by entrapped air or water will be permitted, but the surface shall be free of voids, honeycombing or other large blemishes.
Class F2 This finish is attained by the use of properly designed forms of closely jointed wrought boards, steel panels or other suitable materials. Fins and other projections shall be carefully removed and while the concrete is still fresh surface blemishes shall be filled with a cement and fine aggregate paste.
Class F3 This finish is attained by the use of properly designed forms having a hard, smooth surface. Only very minor surface blemishes will be permitted and there shall be no staining from the release agent. While the concrete is still fresh all surface blemishes shall be filled with a specially prepared paste of cement and fine aggregate
b) Finishes to unformed surfaces
Class U1 The concrete shall be leveled and compacted to produce a uniform plain or ridged surface as required. No further work shall be applied to the surface unless it is to be the basis of a Class U2 or Class U3 finish.
Class U2 After the concrete has hardened sufficiently, the concrete Class U1 finish shall be floated by hand or machine sufficiently only to produce a uniform surface free from screed marks. Where a brush finish is specified, a bristle broom should be lightly drawn across the surface immediately after floating.
Class U3 When the moisture film has disappeared, and the concrete has hardened sufficiently to prevent sweating from being worked to the surface, a ClassU1 finish shall be steel-trowelled under firm pressure to produce a dense, smooth uniform surface, free of trowel marks.
c) Surface accuracy
Unless special tolerances apply, the surface accuracy including the accuracy across joints and grooves shall be such that the gap under any part of a 3 meter long template layer across the surface shall not exceed the values given below
Class of Finish Allowable Gap (mm)
pg. 84
F1 10F2 6F3 6U1 10U2 6U3 6
d) Measurement flumes
Measurement flumes shall be constructed according to the tolerances specified by the supplier of the flow measurement equipment. The flume may be formed by one of the following methods:
i. using formwork and cast in situ with the channel wallsii. using formwork, but casting flume blocks after channel walls have been
castiii. using pre-formed GRP flume liners with concrete backing
Ties or other fixings shall be provided at each interface to ensure adequate anchorage of the separate components.
6.2.15.1 Loading and testing
a) Loading, concrete and completed structures
Reinforced concrete shall not at any time be subject to loading, including its own weight, which will induce a compressive stress in it exceeding 0.40 of its compressive strength at the time of loading or 0,40 of the specified 28 day strength. The assessment of the strength of the concrete and the stresses produced by the loads shall be as determined by the Employer.Requirements for pre-stressed concrete are as specified elsewhere. No part or member of a completed structure shall be loaded at any time in excess of the design working load.
b) Water testing of structures
All structures whose inside surfaces may be in contact with liquid shall be tested for water tightness.Water testing shall be carried out before backfilling is placed against outside walls and before the application of any waterproofing membrane to external surfaces. All connecting pipework and any other components which pass through the structural members under test shall be installed prior to the test being carried out. Any additional test required by the Contractor at an earlier stage of construction shall be carried out at his expense.
Water from the mains shall be used for water testing. The structures shall be filled with water at a rate approved by Employer. After allowing a period of seven days for absorption, the water level shall be recorded by a hook gauge with a vernier attachment or by other approved means, and the water shall be allowed to stand for a period of seven days, during which the total permissible drop, after allowing for evaporation and rainfall, shall not exceed 0.001 times the average water depth of the full tank or 10 mm whichever is the lesser amount.
pg. 85
If the structure does not satisfy the conditions of the test and the daily drop in water level decreases, the period of the test may be extended for a further seven days and, if the specified limit is then not exceeded, the structure may be considered satisfactory.
c) Testing of roofs
Roofs of potable water storage tanks shall be tested on completion. Where it is not practicable, to contain a 25 mm depth of water, because of roof falls or otherwise, the roof shall be thoroughly wetted by continuous hosing for a period of not less than six hours. In either case, the roof shall be regarded as satisfactory if no leaks or damp patches show on the soffit.
6.2.16 Pre-cast Concrete
a) Precast concrete work – general
Precast concrete members shall comply with the drawings and all the relevant requirements of this specification and applicable National Standard.
b) Inspection and identification of precast units
Apart from minor structural members all precast concrete units shall be manufactured in an approved works. If the precast units are to be supplied to the Contractor by a specialist sub-Contractor, Employer shall have the right to visit the Works where the units are being manufactured at all reasonable times during manufacture. All precast concrete members shall be plainly marked to indicate the top of the member, its date of casting and its location and orientation in the structure. Identification marks shall also be shown on the placing plans supplied by the Contractor, including all details of joining, inserts and anchors.
c) Elevated-temperature curing
When elevated-temperature curing is used, the temperature of the concrete shall not exceed 50o C within 2 hours or 100o C within 6 hours of the concrete being placed. The rise in temperature within any period of 30 minutes shall not exceed 10o C. The rate of subsequent cooling shall not exceed the rate of heating. The method of curing employed shall prevent loss of moisture from the concrete.
d) Lifting, transporting and placing precast units
Units shall be transported, stored and placed so that they will not be overstressed and damaged.Units shall not be lifted from their bed, and loaded and transported to the site until the concrete has attained sufficient strength to enable this to take place without danger of cracking or other damage to the concrete. The Contractor shall be responsible for all damage to units caused by premature lifting from the mould, unsuitable provision of lifting operations, or premature transit, and all units thus damaged shall be replaced at the expense of the Contractor. The lifting or transportation of units is prohibited if insufficiently matured.
PART III – BLOCKWORK
pg. 86
6.3.1 BLOCKS
Sand/cement blocks shall be composed of a mortar of 1 part cement and 6 parts sand.
The cement shall be in accordance with Clause 2.01 and the sand Clause 2.02 and the water Clause 2.04 of this specification.
The blocks shall be produced in an approved machine, where production is on order or the quality of the procured blocks are subject to approval prior to usage and their crushing strength shall be not less than 500 Ibs. Per square inch of net cross sectional area at 21 days after casting, or 400 Ibs. Per square inch at 5 days after casting. All blocks shall be true to shape and shall left with shape and clean edges.
6.3.2 BLOCKWORK CONSTRUCTION
Block work shall be built in accordance with the Drawings, figured dimensions may, with the Employer approval, be adjusted to obviate cutting blocks to ensure correct bonding.
Hollow block work below slab level must be filled solid with concrete quality of grade mix; 1:4:8.
Blocks shall be thoroughly soaked immediately before being used, and unfinished work shall be wetted immediately before the recommencement of each day‘s work.
Walls shall be constructed in stretcher bond unless otherwise directed by the Project Engineer. All block work shall be constructed in a uniform manner and true to line and level at all perpends, quoins etc. All block work shall be kept watered on faces, top and ends for at least three days following execution. Joints shall not exceed 13mm thick. No one portion of block work shall be raised more than 900mm above another at one time. The Contractor shall properly execute all rough cutting, bonding wedging and pinning up of soffits, plumbing angles, building or cutting and pinning in ends of lintels, sills, joints, etc.
6.3.2 MORTAR
The materials for mortar shall be as previously specified.
All joints shall be completely filled with mortar comprising 1 part cement to 6 parts sand by volume. No mortar which has started to set shall be used or knocked up for re-use. Where block work walls are to be rendered, the joints are to be rendered and to be left raked out for a depth 13mm.
PART IV – ROOFING
6.4.1 ROOFING
Galvanized Corrugated iron (GCI) roof sheeting shall be of 28 gauge of sinusoidal profile with 10/3” corrugations 8’0’ (2440mm) long and to comply with the relevant B.S, laid and fixed with galvanized spring head roofing nails 2 1\2”
pg. 87
long x 10g felt washers in accordance with manufactures printed instructions and or the drawings and instructions. The roof framings; including trusses shall be coated with preservatives prior to fixing of the roof cladding or GCI sheets.
6.4.2 PROTECTION
The Contractor is to case up, cover and adequately protect all roofing work from abrasion, impact, the action of acid, alkalis, oils or solvents, and is to leave the roof in a sound and clean condition.
Walking on the sheet will not be permitted. Ladders or crawl board shall be used.
PART V – WOODWORK& IRONMONGERY
6.5.1 WOODWORK & IRONMONGERY
All timber for carpenter and joiner’s works shall be of approved properly timber seasoned, straight cut, free from sap, twists, large loose or dead knots etc. and shall conform to BS 1186 part1. Sawn timber shall hold the full scantlings specified after being sawn. Wroth timber shall be finished even, clean and smooth. An allowance of 1.5 mm will be made for each wroth face off the size specified unless otherwise stated.
6.5.2 WORKMANSHIP
All workmanship shall be of the best quality. Carpentry and joinery shall be executed in a workmanlike manner and not fully detailed on the drawings, to details prepared by the contractor but with the approval of the Project Engineer, and shall conform to BS 1186 Part 11.
All joinery shall be framed up and stacked in a dry place but it is not to be glued, wedged up or delivered to site until required in the building. Any joinery which warps or develops shakes or other defect shall be replaced by new ones before being wedged up.
Frames shall be properly joined at corners and morticed, tenoned and wedged in the best manner.
The contractor shall provide all nails, brads, screws, glass paper and tools etc. for the proper execution of the works. The heads of all nails, brads, etc. shall be punched below the surface.
The contractor shall properly execute all fitted ends, mitres, housings, returned ends, junctions of circular with straight etc. as may be necessary. All skirting, architraves and other joinery shall be accurately scribed to any irregular surface to which they abut.
Hardwood fixing plugs 100 x 75mm minimum size or approved metal holdfasts shall be built into the joints of block work or cast into concrete for fixing door frames or other joinery at the rate of one every 800 mm of height. A Minimum of 3 fasteners for each side of each door frame is recommended.
pg. 88
The term plugging includes the provision of hardboard plugs of adequate dimension, built or cut and pinned or cast into the wall surface and planted on.Unless otherwise described on the drawings, all joinery is to be fixed by screwing.
6.5.3 PRESERVATIVE TREATMENT
All timber and joinery work which are not be painted shall be treated with two coats of coloured wood preservative, or other approved preservative before erection. This includes hidden as well as exposed roof construction.
6.5.4 PROTECT JOINERY
All fixed joinery which, in the opinion of the Project Engineer, is liable to become bruised or damaged in any way, shall be completely cased and protected by the contractor until the completion of the works.
6.5.5 CLEARING UP
The contractor is to clear out and destroy or remove all cut ends, shavings and other wood waste from all parts of the building and the site generally, as the work progresses and at the conclusion of the work.
6.5.6 DOOR AND WINDOW FRAMES
Frames shall be made to the sizes and details shown on the drawings. Frames shall be properly fixed with iron cramps or fixing slips as detailed above under workmanship.
6.5.7 PLYWOOD
The plywood to cupboards, etc. shall be as grade A W.B.P faced with close grained timber free from furry patches.
6.5.8 CARCASSING (WALL PLATES, ROOF FRAMING ETC)
Wall plates shall be fixed with ½” (12mm) diameter mild steel rod bolts firmly grouted into the block work beam at (2000mm) centres. All joints shall be halved. See details drawings.
All edges, rafters, hips purlins and other structural woodwork shall be formed from the longest lengths of timber obtainable.
Where joints are unavoidable they shall be properly scarfed and wedged, the length of the joint being twice the depth of the member and shall be secured with 12mm diameter mild steel bolt and knots.
6.5.9 DEFECTIVE WORK
Where defects occur to members generally, including framed and stored joinery, the work shall be taken down and repaired or renewed including any necessary making good and redecoration at the contractor’s expense and to the satisfaction of the Project Supervisor.
pg. 89
6.5.10GENERAL
Ironmongery shall be supplied from an approved supplier. The ironmongery shall be fixed with matching undamaged screws.All joinery shall be properly morticed or worked as necessary for fixing the ironmongery.
6.5.11 SAMPLES
The contractor shall, if requested, submit samples of all ironmongery for approval before fixing.
6.5.12 PROTECTION
All ironmongery shall be protected until completion of the works. Any damaged ironmongery shall be repaired or renewed at the contractor’s expense and to the satisfaction of the Project Supervisor.
6.5.13 COMPLETION
On completion all locks shall be fitted with two keys. The Keys shall be properly labeled, paired together and handed to the Project Supervisor.
All ironmongery is to be oiled and adjusted and left in perfect working order.
PART VI- STEELWORK
6.6 MATERIALS
6.6.1 STEEL
All steel reinforcement shall be placed strictly in accordance with the drawings. Reinforcement shall consist of round steel rods free from pitting, loose rust, mill scale, paint oil or grease and shall conform to BS 4449 and 4461.
The steel fabric reinforcement shall conform to BS 4483. It shall be laid properly, lapped and tied.The reinforcement shall be securely fixed at crossing points with binding wire to form a rigid cage and cement mortar spacer locks shall be provided to keep the steel in its correct position.
The steel work generally shall comply with BS 4360 wieldable structural Steels. Rolled mild steel section shall comply with BS 4848 Part 4: Equal and unequal angles.
All mill scale and rust is to be removed by hand in accordance with clause 505f CP 2008: 1966. Two coats red lead primer are to be applied to structural steelwork before delivery to site. Any damaged plain surfaces must be made good on site prior to application of a succeeding coat of paint.Any surfaces which will be inaccessible after erection are to be painted before erection.
pg. 90
Water shall be clean and free from oil, acid, alkali, earth, vegetable or any other solids in suspension or other soluble substances.
The amount of water used shall be the minimum necessary for practical workability and shall be adjusted as specified to suit the water content of the aggregates. In no circumstance is water to be added to the mix after it has left the mixer mixing pad.
The steel generally shall comply with BS 4360 wieldable structural steels.Rolled mild steel section shall comply with BS 4848 Part 4: Equal and unequal angles.
Hollow sections shall comply with BS 4848 part 2: hollow sections.Galvanized plain sheets shall comply with BS 2989
6.6.2 SUNDRIES
Black bolts; screw and knots shall comply with BS 4190.Close tolerance precision bolts knots, screw and plain washers shall comply with BS 3692.
Black taper washer shall comply with BS 3410.
High strength friction grip bolts shall comply with BS 4395.
Electrodes shall be grade A best heavy coated quality and comply with BS 5639.
6.6.3 WORKMANSHIP
6.6.3.1 FABRICATION
Work off-site shall conform to the appropriate clauses of BS 499: The use of structural steel in building.
All surfaces in contact and all surfaces inaccessible after assembly shall be treated according to these specifications before assembly.
6.6.3.2 WELDING
Welding procedure shall comply with BS 1856, BS 938 and BS 2642 as appropriate.
The equipment to be used shall be of a type which produces proper current so that the welder can produce satisfactory welds.
Welding in shop or on site shall be carried out by experienced and well qualified welders.
Surface preparation and assembly shall be carried out strictly in accordance with BS 1856, BS 449 and BS 2642 as appropriate.
6.6.3.3 WORK ON SITE
pg. 91
All handling of works during transport and on the site shall be planned and carried out by the contractor to proceed in a manner designed to protect the painted surfaces from damage.
All members stored on site shall be laid out on timber sleepers, kept clean from construction dirt. Marking on individual members shall be visible when members have been stacked together.
The position of all points of support for structural steel work shall be set so that the distances between any two points joined by a shop fabricated component of structural steel are within 1/8” of the required dimension. Individual fabricated members shall conform to a degree of accuracy compatible with the tolerances laid down by this clause.
The position of any column or support wall shall be set out with a tolerance of 1”in 100ft., but no point shall be more than 1” away from the position shown on the drawings.
The contractor shall erect temporary bracing as necessary to maintain all structural steelwork in the correct position until the structure is complete.
6.6.3.4 SITE CONNECTIONS
The site bolting of permanent connections shall conform to clause 62 and BS 499.Washer shall be provided under all knots and all bolts shall show after tightening at least two clear threads beyond the knot. During the tightening operation the bolt head shall be prevented from rotating.
Welding on site will not be permitted without the Project Manager’s written approval.
6.6.3.5 PROTECTION AGAINST CORROSION
All mill scale and rust is to be removed by hand in accordance with clause 505f CP 2008: 1966. Two coats red lead primer are to be applied to structural steelwork before delivery to site. Any damaged plain surfaces must be made good on site prior to application of a succeeding coat of paint.
Any surfaces which will be inaccessible after erection are to be painted before erection.
PART VII – FINISHING6.7.1 MATERIALS
The water, cement and sand shall be as previously specified.
6.7.2 SAMPLE PANELS
A sample panel of any finishing shall be prepared and approved if directed. The finishing shall not vary in colour or quality from the approved samples.
6.7.3 HARDBOARD CEILINGS
pg. 92
Hardboard to ceilings shall be as specified and fixed as shown on the drawings to the satisfaction of the Project Manager.
PART VIII – PAINTING6.7.1 MATERIALS
All materials shall comply with the appropriate British Standard and BS Code of Practice CP 231 and shall be of best quality and approved manufacture. All materials for multi-colour works shall be obtained from the same manufacturer.
Colours of paints shall be as directed by the Project Supervisor and the Contractor shall provide if required and at his own expense, small panels of paintwork showing the respective tints selected for the work.
6.8.2 PRIMING
Woodwork and steelwork that requires priming shall be coated with an approved priming paint complying with BS 2521 or 2533.
Block work and concrete surfaces internally that require painting shall be given one coat of approved primer and this shall be applied strictly in accordance with the manufacturer’s instructions.
6.8.3 EMULSION PAINT
Emulsion paints is to be of the Polyvinyl acetate type and is to be applied in two coats (after priming) internally to block work and necessary concrete.
6.8.4 CEMENT PAINT
Cement paint is to be snowcem or other approved type and shall be applied strictly in accordance with the manufacturer’s instructions.
6.8.5 COLOURED TIMBER PRESERVATIVE
Is to be brown “Creosote” or other approved colours to be selected by the Project Supervisor.
PART IX – DRAINAGE6.9.1 GENERAL
a) Regulations
The contractor shall comply in all respect with the regulations and bye-laws of the local authorities.
b) Other Services
Special care must be taken by the contractor during the excavation to avoid damage to any drain, cable or other services which may be encountered.
Should any services be encountered, the contractor is to ensure that they are not in use before grubbing them up. Any live services encountered are to be
pg. 93
adequately protected and approval of the Project Supervisor is to be obtained for method adopted by the contractor.
6.9.2 MATERIALS
Cement, Sand, Aggregate, Water and Sandcrete blockCement, sand, aggregate, water, concrete and sandcrete block shall be as previously specified.
6.9.3 INSTALLATION.
a) Excavation
Excavation for drains shall be in straight lines to stated depth and gradients and of sufficient width to allow proper drainage. Provide all necessary earthwork required, they shall be filled and adequately consolidated to the correct level with selected fine material. The excavation shall be kept free from surface or percolating water by pumping or otherwise. Compact and clean bottoms of excavations.
Prices for excavations shall include for grading ground under beds, backfilling, removing surplus excavated materials and providing any necessary earthwork support.
For the purpose of calculating the “extra over” quantities of excavations, the width of each has been assumed to be 12” (30-mm) wider than the internal width of the trench and prices shall, be deemed to allow for any other width, which may actually be excavated.
b) Storm Water
Surface water channels shall be 4”thick precast sandcrete block work rendered internally, laid on plain concrete base as shown on the drawings.
Block work and concrete shall be as previously specified.
c) Laying
Drains shall be laid in straight lines in accordance with the drawings and to sloping gradients.
PART X – PLUMBING INSTALLATION
6.10.1 MATERIALS AND WORKMANSHIP.
The pipes have been measured net as fixed, and rates shall include for all short lengths, cutting waste and extra joints.
The rates for fixing UPVC pipe work shall include for clips or brackets centres not exceeding those recommended by the manufacturer.
6.10.2 PVC PIPES AND FITTINGS.
pg. 94
All PVC pipes and fittings for drainage, sanitary and cold water installation shall be heavy grade as manufactured by KEY TERRAIN LTD, LARKFIELD. NAIDSTONE, ENGLAND or other equal and approved. The installations are to be carried out strictly in accordance with the manufacturer’s instructions and recommendations.
All equipment and ancillaries shall be of an approved type and comply with the relevant BS and shall be fixed strictly in accordance with the manufacturer’s instructions.
Water storage tanks shall be galvanized steel and shall comply with BS 471, grade A and completed with ball valve, overflow and outlet connections and drain cock and cover. On completion of the installation and immediately prior to testing, the whole of the installation shall be thoroughly flushed through to remove all dirty water, debris, etc.
All pipe work is to be subject to hydraulic test for water pressure in the presence of the Project Supervisor. Such tests are to be applied by test pump and are to comprise a test pressure of 161 1b per square inch carried for thirty minutes.
Leaks or other defects are to be replaced at the contractor’s own expense and the same test repeated until the whole of the pipe work is proved to be completely free from defects to the satisfaction of the Project Supervisor.
The contractor shall include for marking positions of all holes, mortises, chases, etc., in the structure for the installation in this section. Holes through concrete work or block work may be formed during construction and the contractor shall include for all necessary setting out.
6.10.3 OTHER REQUIREMENTS
Covers of sewer inspection chambers or electrical manholes should flush with finished grade level, and the handles should not pose any hazard.
All plumbing pipes should not be visible. Either buried underground or in walls. Fixtures such as stop-corks, valves should be visible and accessible for control and maintenance.
PART XI – ELECTRICAL INSTALLATION
6.11.1 SCOPE
The work shall include the supply of all materials unless otherwise stated, labour, tools and equipment necessary to install, test and commission all the services described in these Bills or shown on the contract Drawings.
6.11.2 STANDARD OF WORKS.
The work and all materials and workmanship shall comply with the following:-
The Supply Authority (National Power Authority, NPA) Regulations.
pg. 95
The current appropriate British Standards and the British Standard Code of Practice for Electrical Installation.
6.11.3 SUPPLY.
The electricity supply to the site will be provided by the Supply Authority where applicable and will be of a suitable voltage.
6.11.4 TESTING BY SUPPLY AUTHORITY.
The contractor shall serve all notices, on the Supply Authority for testing, pay all fees in connection therewith, and should any additional charges be made for re-testing, they shall be paid by the contractor.
6.11.5 EARTHING
The whole of the electrical installation and all other equipment connected thereto shall be earthed in conformity with the requirements of the Supply Authority.
6.11.6 TESTING MATERAILS AND WORK.
The Project Supervisor shall have full power to require any materials or work to be tested at the contractor’s expense in order to prove their soundness and efficiency.
The cables, conduits and sheaths shall be tested for installation and continuity in accordance with the Supply Authority Regulations, as the work proceeds, before any connections are made to switch and distribution board terminals. In case of any materials or work shall without being tested, be considered defective, such work shall forthwith be amended in a proper and satisfactory manner, on being notified by the Project Supervisor.
6.11.7 DISTRIBUTION PANELS
All distribution panels shall consist of substantial sheet cases with hinged doors. This metalwork shall be primed, and finished in good quality stove enamel. Colour finish to BS 31 8C.
Gaskets shall be fitted to the doors to prevent the ingress of moisture and dust.
The distribution panels shall be supplied with end plates and the contractor shall drill two extra 25mm diameter holes in each plate over and above those required for the circuits’ details.
The spare holes shall be fitted with hexagonal stopping plugs and locknuts.
All neutral bars shall have sufficient ways to enable the maximum number of single phase circuits to be connected without bunching. Connections to neutral bars shall be made in such a manner that they correspond to phase connections.
Where distribution panels are installed in locations remote from their controlling switches they shall have on load isolating switches of rating schedules mounted adjacent or integral to the panel.
pg. 96
On each distribution panel a circuit list shall be provided on the inside of the panel door, clearly marked in Indian ink.
6.11.8 CONDUIT
Conduits shall be heavy gauge high impact PVC not less than 15mm external diameter and manufactured to BS 4607. All conduits shall be free from mechanical damage and shall be adequately protected both when on site and when installed on building structure. The contractor shall be responsible for inspecting the conduit and accessories for damage before the final building finishes are applied.
All joints in conduits shall be made using push-in types of couplers and accessories, assembled with the adhesive supplied by the manufacturer.
Where conduits cross expansion joints, the contractor shall install expansion couplers at the position of the expansion joints and at right angles to it.
6.11.9 CABLES
All cables shall be colour coded in accordance with the Supply Authority Regulations. The exact type cable shall be as specified on the drawings. The cable types between equipment and/or buildings shall be as specified. No jointing of cables will be permitted.
6.11.10 SOCKET OUTLETS
Unless otherwise specified all general socket outlets shall be rates 13 Amp and be of the three rectangular pin types BS 1363. 1967.
6.11.11 LIGHT FITTINGS
Lamp and fittings shall be provided and installed as per drawings, specifications, notes, etc. Lamp bulbs, tubes, etc. shall be installed in lighting fittings immediately prior to practical completion and shall not be used as means of temporary lighting. The lamps can only be used for testing of the lighting installation and during handover inspection.
6.11.12 LIGHTNING PROTECTION
The Contractor shall provide a complete lightning protection system. The whole shall be in accordance with British Standard codes No. CP 326
The position of the whole of the installation shall be agreed with the Employer before work commences.
6.11.13 HEIGHTS OF OUTLETS
The Contractor’s attention is hereby drawn to the fact that all heights of lighting fixtures etc., above finished floor level must be consistent. Care should be taken in respect of distance of switches from door architraves
pg. 97
Unless otherwise specified on the drawings, all units shall be mounted at the following heights from finished floors level taken to the centre of the unit:
- Lighting switches -1400mm
- Socket outlets-generally -300mm
- Fuse spur boxes -1400mm
- Telephone outlets -300mm
- Motors Central Units -1400mm
- Individual items of switchgear -1400mm
Generally, switchboards and distribution boards shall be installed so that any item, to which easy access is required such as a fuse, circuit breaker, instrument etc., is not more than 2150mm above finished floor level.
6.11.14 OTHER REQUIREMENTS
Utility power service shall be three phase 380 volt, 4-wire and earth. The service- drop cable shall be rated for 0.6/1.0 KV, 4 core x10sq mm with armour, direct burial, suitable for wet and dry conditions, with sufficient mechanical strength. This cable shall be connected to the existing utility pole and the power-change over switch in the electrical closet.
The generator cable shall be of the same size as the utilities. This cable shall be laid from the generator distribution switchgear (to be indicated by Project Supervisor), up to the power change-over switch in the electrical closet. The load-feeder cable from the change-over switch in the electrical closet energizes a 12-circuit. Three-phase, 4-wiredistribution panel with mains disconnect switch and fused miniature circuit breakers. Distribution panel shall be metal clad with hinged doors and door-gaskets to prevent entry of moisture, etc.
6.11.15 PARKING LOTS AND PAVED AREAS
a) Base
The base of parking lots shall consist of selected laterite bed, laid to a compacted thickness of 3” (75mm) blinded with fine materials and rolled if required with a light roller, weighing not more than 5 cwt.
b) Precast Concrete Paving Slabs
Precast Concrete Paving Slabs be in accordance with BS 368 and shall be laid on a bed of sand as specified and bedded in cement mortar (1:6). Paving slabs shall be 2” thick. All joints shall be grouted with a semi-dry mix of sand and cement brushed in. Paving shall be cleaned off on completion.
pg. 98
SECTION VII: SCOPE OF WORKS
The works shall include but not necessarily be limited to the following:
7.1 Descriptions of works
Rehabilitation of the main health centre buildings and the staffs residence, Post natal unit Extensions; including rain water harvesting systems installations,
pg. 99
construction of new Lined Ventilated Improved Pit latrine (VIP) with Hand Washing Facilities, construction of Septic tanks and soak away pits, construction of an Incinerator, drainage improvement and general plumbing, ceiling painting and all associated finishes works, as wells as door and windows fittings or repairs at Mathoir PHU.
7.2 General Scopes
i. Substructure: This includes site clearance where necessary; site layout; excavation of trenches; concrete works including pavement of floor; Block works including wall constructions, lining of inspection chambers for Septic tanks and Lined VIP Latrines construction using sandcrete blocks; reinforcement work and concrete application for columns and beams; including casting of baffle beams and walls, suspended slabs; construction of manhole and vent holes; as per drawings and instruction by the Site Supervisor, according to work scopes.
ii. Superstructure: Depending on the work components requirements , construct Sandcrete block work to wall height, concrete applications to beams, stair cases, wall plates and columns, and plastering of internal and external walls; construction of perimeter wall fence, as per the attached drawings and the technical descriptions of work scopes; Construction of rain water harvesting systems for roof catchments with Hand Washing facilities, as per the attached drawings; including all paintings and final finishes.
iii. Carpentry Work: Form work required for all concrete applications and wooden door openings, edges of foundation, lintels and beams; roof frames and roof coverings; fixing of windows ,doors and locks; including the mosquitoes mesh framings and installations etc.
iv. Plumbing Work: Installation of gutters on roof catchment, down pipes and washouts, overflows and draw off taps for rain water harvesting system, installation of uPVC pipes and accessories and the sewer pipe installation for the WC and WHBs to the septic tanks and all necessary accessories with inspection chambers ,inspections bends and gulley traps.
v. Paint Work: Painting of all internal and external walls, foundation walls, fascia boards, doors and doors respectively.
vi. Tiling Work: Tile application to the floors and internal walls of the toilets, where required and replacement of defective floor and wall tiles with quality tiles of desirable colors according to the users preference.
7.3 Detailed works scopes.
The detailed descriptions of work scopes is summarized in the table below:
Table 15: Mathoir Health Centre Rehabilitation work scopes
A MAIN PHU BUILDING.A1 SUBSTRUCTURE.A1.1 Preliminaries work to include cutting and clearing of masonry and
pg. 100
backfilling of latrine and selected hard core.A1.2 Concrete applications (mixing, transporting, placing and
compaction etc.) to column in foundation; including formwork, reinforced steel bar bending and binding.
A1.3 Block work construction in Foundations with precast sand crete blocks in mortar bed and joints of 12mm thick.
A1.4 Plastering application to Foundation walls with cement sand mortar mix 1:6 of 12mm thick.
A1.5 Painting application to Foundation with enamel paints.A2. SUPERSTRUCTURE.A2.1 Preliminaries works; including removal of existing corrugated iron
sheet, solar frames, panels, ceiling frame and covering.A2.2 Concreting applications to columns, lintels and beams; including
formwork, reinforced steel bar bending and binding.A2.3 Fixation of Precast sand Crete decorative screen blocks.A2.4 Roof works; including roof truss framing and claddings.A2.5 Fabrication and fixing of panel doors; including mosquito meshes.A2.6 Fabrication and fixing of fabricated metal windows; including
mosquito mesh and glazing works.A2.7 Cement and sand (mix 1:3) screed application to concrete floors.A2.8 Cement and sand (mix 1:6) rendering of 12mm thick to walls.A2.9 Ceiling framing and covering installation.A2.10
Painting of internal and external; including ceilings, doors, windows, sash frame and mosquito mesh frames.
A2.11
Tilling application to the floor area at the reception, laboratory and delivery rooms.
A2.12
Plumbing works of Water closet, Wash Hand Basin; including pipes, fittings and all accessories.
A2.13
Construction of external drainage channels and aprons.B STAFF QUARTER DUPLEX KITCHEN TOILETS AND WASH ROOMS.B1 SUBSTRUCTURE.B1.1 Preliminaries work; to include cutting and clearing of masonry and
backfilling of basements with suitable selected hard core.B1.2 Reinforced concrete application to columns in foundation;
including reinforcement steel bars bending, binding and formwork settings.
B1.3 Construction of court yard in 150mm walls in sandcrete blocks in 12mm thick mortar beds and joints.
B1.4 Application of Cement and sand (mix 1:6) rendering of 12mm thick to the constructed walls.
B1.5 Paints application to Foundations.B2 SUPERSTRUCTURE.B2.1 Preliminaries works including removal of existing corrugated iron sheet,
solar frames and solar panels, ceiling frame and roof covering.B2.2 Reinforced concrete applications to lintels and beams including
reinforcement steel bars bending, binding and formwork setting and placement.
B2.3 Roofing works; including roof framing and cladding.
pg. 101
B2.4 Fabrication and installation of wooden panel doors; including mosquito meshes.
B2.5 Fabrication and fixing of metal window; including mosquito mesh and glazing works.
B2.6 Cement and sand (mix1:3) screed application to concrete floors.B2.7 Cement and sand (mix1:6) rendering of 12mm thick to walls.B2.8 Tilling work of the floor area of the maternity unit, laboratory platform,
toilet and bath.B2.9 Ceiling framing and covering.B2.10
Painting of internal and external walls; including ceilings, doors, window sash frames and mosquito mesh frames.
B2.11
Construction of drainage channel and apron.
C CONSTRUCTION OF SEPTIC TANKS FOR TOILET STAFF QUARTERS.C1 SUBSTRUCTURE.C1.1
Earth work; including excavation of trenches, pit for the tank and soak away as well as filling with suitable materials to make up levels and compaction.
C1.2
Application of insitu base concrete blinding.
C1.3
Application of reinforced in-situ concrete (1:2:4 -¾" aggregate), in baffle cross beams, suspended floor slabs and ground beam including form works, reinforcement steel bars bending and binding.
C1.4
Construction of 150mm thick foundations walls in Block precast sand Crete solid blocks bedded and jointed in cement mortar (1:6).
C1.5
Cement and sand (1:6) rendering with smooth trowelled finishes in foundations.
C1.6
Construction of septic tanks in block wall on concrete base in 12mm thick mortar bed to support reinforced concrete ground beams and suspended slabs to septic tank.
C1.7
Construction of baffle cross internal walls on reinforced concrete beams in 12mm thick mortar beds.
D CONSTRUCTION OF LINNED VIP LATRINE (1 block of eight (8) Cubicles).D1 SUBSTRUCTURE.D1.1
Earth work including excavation of pit, backfilling to make up levels and compaction.
D1.2
Application of reinforced insitu concrete (mix 1:2:4 -¾" aggregate), in columns, baffle cross beam, ground beams and suspended slabs; including reinforced steel bending, binding and form work settings.
D1.3
Mass in-situ concrete application in foundations, base ramps and steps.
D1.4
Construction of pit walls in 225mm Precast sand Crete solid blocks, bedded and jointed in cement mortar (mix 1:6).
D1.5
Plaster applications in Cement and sand (1:3) rendering, smoothly trowelled to final finishes to internal pit wall surfaces.
D1.6
Mass concrete application to drainage walls of 100mm thick.
D1.7
Filling of Apron with Selected hard-core (ball stones) or suitable materials of 150mm thick, levelled and compacted to Walkway and Ramp.
D2 SUPERSTRUCTURE.D2. Application of reinforced insitu concrete (mix 1:2:4 -¾" aggregate) ring
pg. 102
1 beams; including reinforced steel bending, binding and form work settings.
D2.2
Construction of 150mm superstructure walls in 225mm thick Precast sand Crete solid blocks bedded and jointed in cement mortar (mix 1:6).
D2.3
Plaster applications in Cement and sand (mix1:3) rendering, smoothly trowelled to final finishes to internal and external wall surfaces.
D2.4
Application of paints with enamel paint to doors, internal and external walls to a height of 1500mm and fascia boards and apply emulsion paint to walls height above the enamel level (1500mm) internally and externally.
D2.5
Roof construction to include truss framings and cladding installation.
D2.6
Install 150mm diameter uPVC Vent pipes with brackets and vent caps.
D2.7
Perform all necessary finishes to the latrine structures and clear the site free of all debris.
D2.8
Installation of Mosquitoes meshes to Latrine ventilations (500mmx 500mm).
E CONSTRUCTION AND INSTALLATION OF RAINWATER HARVESTING SYSTEMS To CONSTRUCTED VIP LATRINE (To Provide Water for Hand Washing).
E1.1 Earth work including excavation 150mm deep strip levels, filling to make up levels and compaction.
E1.2 Excavate strip foundation trenches starting at site strip level, maximum depth not exceeding 600mm,according to plan.
E1.3 Apply 100mm thick mass concrete mix of 1:3:6/20mm aggregates to the strip foundation.
E1.4 Construction of 225mm thick block cross wall and apron on the mass foundation concrete in masonry sandcrete blocks in 12mm mortar beds and joints to 900mm height above the ground.
E1.5 Application of reinforced concrete to beam on the cross walls and slabs as platform for the water tank; including form works and steel reinforcement bar bending and binding as support slab.
E1.6 Procurement and installation of 2000litres plastic cold water horizontal tank as per installation instructions.
E1.7 Application of Plaster to Wall and apron (Hand Washing points).E1.9 Installation of gutters, first flush devices and all plumbing work;
including pipe installation and all accessories as well as installation of water taps at the apron.
E1.10
Cement and sand rendering to external walls of 12mm thick, in mix of 1:6 as final finishes.
F INCENERATOR CONSTRUCTION.F1 SUBSTRUCTURE.F1.1 Site Clearance and earth work including filling to make up levels and
compaction.F1.2 Apply insitu concrete in foundation; including all form works.F1.3 Construction of foundation in 225mm precast sand crete block works in
12mm thick mortar beds and joints.F1.4 Application of plaster to foundation with cement and sand mortar mix
1:6.Application of enamel paints to foundations.
F2 SUPERSTRUCTURE.F2.1 Application of reinforced concrete in lintel; including form work and
pg. 103
reinforced steel bar bending and binding.F2.2 Procurement and construction of walls in civaram bricks 100mm in
cement and sand mortar beds and joints of 12mm thick.F2.3 Construction of 150mm thick walls in precast block works around the
perimeter of the incinerator.F2.4 Roof construction to include trusses framing and cladding fixation.F2.5 Fabrication and fixation of steel metal fire tray.F2.6 Fabrication and fixation of metal door.F2.7 Cement and sand (mix 1:3) screed applications to concrete floors to
final finishes.F2.8 Cement and sand (mix 1:6) of 12mm thick rendering to walls.F2.9 Application of paints to internal and external walls.F2.10
Paints application to fascia boards and perimeter wall.
F2.11
Construction of external drainage channels and aprons.
G EXTENSION OF POSTNATAL UNITS.G1 SUBSTRUCTURE.G1.1
Earth works; including excavation of strip foundation trenches and fillings with suitable laterite and selected hard-core materials.
G1.2
Construction of plinth walls in block work of 150mm thick in Foundations.
G1.3
Plastering of the Foundation constructed walls.
G1.4
Paints application to the constructed Foundation in blocks walls.
G2 SUPERSTRUCTURE.G2.1
Reinforced concrete works in lintels and beams and wall plate; including formwork, reinforcement bars steel bending and binding.
G2.2
Formwork preparation for150mm block moulding and block production.
G2.3
Roofing works; including roof framing and claddings.G2.4
Fabrication and fixing of wooden panel doors; including mosquito meshes.
G2.5
Fabrication and fixing of metal windows; including mosquito mesh and glazing works.
G2.6
Cement and sand (1:3) screed application to concrete floors,G2.7
Cement and sand (1:6) rendering of 12mm thick to walls.G2.8
Tilling of the floor area of the laboratory working platform, toilet and bathroom.
G2.9
Plumbing installation; including installation of WCs, Wash Hand Basin; including pipe installations.
G2.10
Fixation of Ceiling framing and covering.G2.11
Painting of internal and external walls; including ceiling, door, window sash frame and mosquito mesh frames.
G2. Construction of external drainage channels and aprons.
pg. 104
12H EXTENSION OF LABORATORY ROOM.H1 SUBSTRUCTURE.H1.1
Earth works; including excavation of strip foundation trenches and fillings with suitable laterite and selected hard-core materials.
H1.2
Construction of plinth walls in block work of 150mm thick in Foundations.
H1.3
Plastering of the Foundation constructed walls.
H1.4
Paints application to the constructed Foundation in blocks walls.
H2 SUPERSTRUCTURE.H2.1
Reinforced concrete works in lintels and beams and wall plate; including formwork, reinforcement bars steel bending and binding.
H2.2
Formwork preparation for150mm block moulding and block production.
H2.3
Roofing works; including roof framing and claddings.H2.4
Fabrication and fixing of wooden panel doors; including mosquito meshes.
H2.5
Fabrication and fixing of metal windows; including mosquito mesh and glazing works.
H2.6
Cement and sand (1:3) screed application to concrete floors,H2.7
Cement and sand (1:6) rendering of 12mm thick to walls.H2.8
Tilling of the floor area of the laboratory working platform, toilet and bathroom.
H2.9
Plumbing installation; including installation of WCs, Wash Hand Basin; including pipe installations.
H2.10
Fixation of Ceiling framing and covering.H2.11
Painting of internal and external walls; including ceiling, door, window sash frame and mosquito mesh frames.
7.4 Duration and Maintenance Period
The contractual period shall be as stated in the Tender documents, after the signing of the Form of Agreement. 3months maintenance period shall apply from the date of issue of the Certificate of practical completion.
pg. 105
SECTION VIII: WORKPLAN
8.1: Work plan
Table 16: Work Plan Template8
S/N. Description of Activities
Month 1 Month 2 Month3 ……etc.
w1
w2
w3
w4
w1
w2
w3
w4
w1
w2
w3
Etc….
1.
2.
3.
4.
8
Instruction Notes to bidders1. The above template is provided as a guide to aid the development of a realistic work plan
applicable to this contract.2. It is not conclusively exhaustive and should be expanded or downsized at the discretion of
the bidders to reflect accurate timing in delivering of the intended rehabilitation works within the defined scopes.
3. The template will have to be reproduced, completed and bound with the bid document in the relevant section, rather than just filing the table as it is.
4. Contractor must seek clarification where there is lack of understanding in completing or regenerating the template.
pg. 106
5.
6.
7.
8.
9.
10.
Note: Add rows and Columns as necessary.
SECTION IX: DRAWINGS
9.1: PHU and Staff Quarters Drawings
pg. 107
pg. 108
pg. 109
pg. 110
pg. 111
pg. 112
9.2 Lined VIP Latrine drawings
pg. 113
pg. 114
pg. 115
pg. 116
pg. 117
pg. 118
pg. 119
9.3 Septic Tank Drawings
pg. 120
pg. 121
pg. 122
9.4: Rain Water havesting Tank Drawings
pg. 123
pg. 124
pg. 125
pg. 126
pg. 127
SECTION X: BILLS OF QUANTITIES (BoQ).
Table 17: Bills of Quantities for Mathoir Health Centre Rehabilitation.
ITEM DESCRIPTION Qty Units
Unit Rate
s (SLL
)
Amount (SLL)
A MAIN BUILDINGA.1 SUBSTRUCTUREA.1.1 PreliminariesA.1.1.1
Provide for cutting of masonry sand crete block work from over site concrete to the footing of the existing building 0.675 x 0.675 x 0.675m deep.
3.00 Item
A.1.1.2
Provide for clearing of cuttings from existing structure and cart away as appropriate.
1.00 Item
A.1.1.3
Backfilling and safe disposal of excavated materials deposited and compacting in layers of maximum 100mm thick selected materials to make up levels.
3.00 Item
A.1.1.4
Selected hard-core (ball stones) materials, obtained off- site, to make up levels under floors, 150mm thick average, well rammed and levelled to an even surface.
3.00 Item
A.1.2 Concrete Work in Foundations.A.1.2.1
Plain in-situ concrete (1:3:6 -1½" aggregate), including all form works and assorted nails; as;
A.1.2.2
Concrete over site 150mm thick. 2.61 Cum
A.1.2.3
Concrete in Steps. 3.89 Cum
A.1.4 Block work.A.1.4.1
Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6), in;
A.1.4.2
225mm thick walls at steps. 1.62 Sqm
A.1.5 Finishes in Foundations.A.1.5.1
Cement and sand (1:6) render, smooth trowelled finish to;
A.1.5.2
At the portion of the foundation above ground level.
7.69 Sqm
A.1.5.3
Threads and risers of Steps. 1.62 Sqm
pg. 128
A.1.6 Painting in Foundations.A.1.6.1
Prepare and apply three (3) enamel coats paint, to rendered surfaces, externally.
7.69 Sqm
a) Subtotal 1: Sub Structure of Main PHU Building.
A.2 SUPERSTRUCTUREA.2.1 Preliminaries.A.2.1.1
Safe removal existing roof covering and framing (GCI sheet and timber). The removed GCI sheet shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering Team.
1.00 Item
A.2.1.2
Safe removal and storage of the existing solar lighting panels and framing. The removed panel and framing shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern engineering team.
1.00 Item
A.2.1.3
Safe removal of the existing ceiling covering and framing (hardboard and timber). The removed hardboard shall be handed over to Concern worldwide and the timber should be recycled according to the advice of Concern Engineering team.
1.00 Item
A.2.2 CONCRETE WORK : Reinforced in-situ concrete (1:2:4 - 3/4" aggregate), in 12mm plain round mild steel bar reinforcement BS4449, straight and bent bars, in 6mm diameter links and stirrups, @ 225mm centres; including all necessary form works and assorted nails in;.
A.2.2.1
Horizontal beams 0.92 Cum
A.2.2.2
Lintels 0.38 Cum
A.2.3 Plain in-situ concrete (1:3:6 -¾"aggregate), including all necessary form works and assorted nails; on;
A.2.3.1
Gable walls to support purlins. 0.45 Cum
A.2.4 BLOCKWORK: Precast
pg. 129
sandcrete (1:6) solid blocks, bedded and jointed in cement mortar (1:6), in;
A.2.4.1
150mm thick gable walls. 1.52 Sqm
A.2.5 Precast sandcrete decorative screen blocks, bedded and jointed in cement mortar (1:6) and fixed to openings.
A.2.5.1
150mm thick walls. 5.76 Sqm
A.2.6 ROOFING.A.2.6.1
Corrugated iron roofing sheets, 28 gauges x 2.44m long, complete with fixing accessories.
149.94
Sqm
A.2.6.2
Ridge covering, 600mm girth x 1.8m long, complete with fixing accessories.
7.60 Lm
A.2.7 WOODWORK :Sawn hardwood timber, treated with coloured approved wood preservatives, in;
A.2.7.1
2" x 6" ridge board. 21.28 Lm
A.2.7.2
50mm x 100mm rafters. 27.33 Lm
A.2.7.3
50mm x 75mmpurlins @ 1000mm centres.
81.36 Lm
A.2.7.4
50mm x 100mm wall plates. 71.60 Lm
A.2.7.5
50mm x 150mm ceiling joists. 35.08 Lm
A.2.7.6
50mm x 75mm struts/braces. 18.53 Lm
A.2.7.7
50mm x 75mm ceiling joists. 127.97
Lm
A.2.7.8
50mm x 50mm ceiling noggings,@1200mmx600mmc/c.
415.95
Lm
A.2.8 Wrought hardwood timber, treated with clear approved wood preservative, in;
A.2.8.1
1" x 9" (finished) fascia/verge board, chamfered edge.
36.09 Lm
A.2.8.2
2" x 6" door frames; rebated. 24.95 Lm
A.2.8.3
½" x 2" (finished) cover strips. 548.98
Lm
A.2.9 DOORS.A.2.9.1
Solid panelled; mahogany, single leaf door overall size with quality fittings (2’ - 8" wide x 6’ - 8" high).
7.00 Nr
A.2.9.2
Mosquitoes mesh to single doors (900mm x 1200mm).
429.59
Sqm
pg. 130
A.2.10
MOSQUITO MESH to Windows.
A.2.11.1
Mosquito mesh to single windows. 192.66
Sqm
A.2.11.2
Mosquito mesh to Double windows.
16.20 Sqm
A.2.11.3
Mosquito mesh to vent openings. 2.40 Sqm
A.2.11.4
½" x 2" (finished) cover strips. 81.60 Lm
A.2.11.5
50mm x 300mm x3600mm timber.
81.60 Lm
A.2.12
METAL WORK.
A.2.12.1
Single Metal doors 900mmx 2100mm.
4.00 Nr
A.2.12.2
Double Metal doors 1200mmx 2100mm.
2.00 Nr
A.2.13
Windows.
A.2.13.1
Single metal windows 1200mm x1000mm.
13.00 Nr
A.2.13.2
Double metal windows 1200mm x1000mm.
2.00 Nr
A.2.13.3
Single windows 600mmx600mm 4.00 Nr
A.2.13.4
Fabricated Window casement Fasteners( Handles)
17.00 Nr
A.2.13.5
Fabricated Window casement pegs stay (Fenders)
34.00 Nr
A.2.13.6
Plain glass 450mm x 300mm. 74.80 Pcs
A.2.13.7
Obscure glass450mm x 300mm. 74.80 Pcs
A.2.13.8
Glazing putty. 149.60
Kg
A.2.14
FLOOR WORKS :Cement and sand (1:3) screed on concrete floors,
A.2.14.1
50mm thick, to receive screed. 372.85
Sqm
A.2.15
Walls : Cement and sand (1:6) rendering of walls, 12mm thick, to;
A.2.15.1.
Internal walls. 315.20
Sqm
A.2.16
TILING FLOOR (Reception, Delivery room, Bath rooms &Toilet).
A.2.16.1
Floor tiles 300 x 300 mm, 10mm thick of selected design and colour.
475.57
sum
A.2.1 TILING WALL (Laboratory
pg. 131
7 platform, Bath rooms &Toilet).A.2.17.1
Wall tiles 150 x 150 mm, 10mm thick of selected design and colour.
77.63 Sqm
A.2.18
Ceiling Works: Hardboard sheets, 8' 0" x 4' 0" x 1/8" thick to fix underside of ceiling to timber with clout nails, inclusive of all 50 x 50mm noggins and hangers;
A.2.18.1
Internal. 195.06
Sqm
A.2.18.2
External 25.29 Sqm
A.2.19
PLUMBING INSTALLATION
A.2.19.1
45 x 55mm Vitreous china wash hand basin set with one Nr tap hole, chromium plated 32 mm waste fittings , plastic bottle trap, chain with plug and 1, Nr12mm diameter pillar tap, fixed on cast iron concealed brackets complete with 38mm outlet and uPVC pipe
2.00 Set
A.2.19.2
WC suit comprising Vitreous china trap, Vitreous china 2½ gallons cistern and brackets including ball valve and internal fittings, flush pipe, jointed rubber connector and plastic ring seat and cover.
2.00 Set
A.2.19.3
Stainless steel floor drain with 50mm out let drainage channel.
2.00 Pcs
A.2.19.4
Provide, install 100mm diameter uPVC vent pipes.
3.90 Lm
A.2.19.5
Provide, install and secure using patented brackets to100mm diameter uPVC vent pipes.
12.00 Pcs
A.2.19.6
Provide, install 100mm diameter uPVC Cowl (Caps).
1.00 Pcs
A.2.19.7
Provide, install 100mm diameter uPVC sewer pipes from WC to the septic tank.
17.50 Lm
A.2.19.8
Provide, install 100mm diameter uPVC sewer pipes from the septic tank to the soak way pit.
7.63 Lm
A.2.19.9
Construct 600 x600 mm inspection chamber with Precast sandcrete (1:6) solid blocks, bedded and jointed in cement mortar (1:6).
0.24 Cum
A.2.19.10
Construct 600 x600 mm Reinforced precast concrete slab as cover (1:2:4; ½” aggregate) to
0.02 Cum
pg. 132
inspection chamber.A.2.20
PAINTING :Prepare and apply three coats external quality enamel paint, to;
A.2.20.1
Externally rendered walls, 1500mm - 0'' below floor screed emulsion paint.
127.05
Sqm
A.2.20.2
Externally rendered walls, 1500mm - 0'' above floor screed enamel paint.
127.05
Sqm
A.2.21
Prepare and apply three coats emulsion paint, to;
A.2.21.1
Internally rendered walls, 1500mm enamel above floor screed.
265.04
Sqm
A.2.21.2
Internally rendered walls, 1200mm emulsion paint above the enamel paint.
212.03
Sqm
A.2.22
Soffits of hardboard ceiling including cover strips and corner strips.
A.2.22.1
Internally. 243.83
Sqm
A.2.22.2
Externally. 31.61 Sqm
A.2.22.3
Decorative screen blocks, both sides.
1.44 Sqm
A.2.23
Prepare and apply three coats oil based paint to;
A.2.23.1
Fascia board, not exceeding 300mm girth.
25.41 Sqm
A.2.24
Prepare and apply two coats polyurethane clear lacquer, matt surface finish, to;
A.2.24.1
Timber panelled doors including frames.
3.78 Sqm
A3 EXTERNAL DRAINAGE WORKS :A3.1 Excavation.A3.1.1
Excavate trenches, starting from site strip level, average 500mm wide x 500mm deep.
32.65 Cum
A3.1.2
Dispose of surplus excavated materials after back filling.
10.88 Cum
A3.2 Plain in - situ concrete (1:3:6 - 3/4" aggregate),including all form works and assorted nails; in;
A3.2.1
75mm thick base of the drainage. 4.08 Cum
A3.3 Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6) and laid to two sides of concrete base in trench;
pg. 133
A3.3.1
100mm thick walls. 49.68 Sqm
A3.4 Cement and sand (1:6) render, smooth trowelled finish, to;
A3.4.1
Inside of block walls. 49.68 Sqm
A3.5 Aprons.A3.5.1
Depositing and compacting in layers, maximum 100mm thick, selected hard-core (ball stone) materials, obtained off site, to make up levels, average 150mm thickness well rammed and levelled to an even surface.
54.42 Sqm
A3.6 Plain in - situ concrete (1:3:6 -¾" aggregate),including all form works and assorted nails; as;
A3.6.1
Apron Concrete Floor, 50mm thick, laid to falls and formwork to edges of apron, not exceeding 150mm wide.
2.72 Cum
b) Subtotal 2: Superstructure to Main PHU Building.STAFFS QUARTERS.
B.1 SUBSTRUCTURE.B.1.1 Preliminaries.B.1.1.1
Provide for any cutting of masonry sand crete block work from over site concrete to the footing of the existing building.
8.00 Item
B.1.1.2
Provide for clearing of cuttings from existing structure and cart away as appropriate.
1.00 Item
B.1.1.3
Backfilling and disposal of excavated materials deposited and compacting in maximum layers of 100mm thick with selected materials to make up levels at constructed column points.
8.00 Item
B.1.1.4
Selected hard-core (ball stones) materials, obtained off- site, to make up levels under floors, 150mm thick average, well rammed and levelled to an even surface at areas of constructed column points.
8.00 Item
B.1.2 Concrete Work : Plain in-situ concrete (1:3:6 -1½" aggregate) ,including all form works and assorted nails; to;
B.1.2. Over site 150mm thick. 9.07 Cum
pg. 134
1B.1.2.2
Concrete in Steps, 150mm thick. 1.94 Cum
B.1.3 Reinforced in-situ concrete (1:2:4 -¾" aggregate), in 12mm plain round mild steel bar reinforcement, BS4449; in foundation and 6mm diameter links & stirrups @225mm C/C ;including all form works and assorted nails.
B.1.3.1
12mm rbars straight and bent bars, in column and column bases, 225mm thick and Columns Kickers in foundation,900mm high in links & stirrups of 6mm diameter @ 225 C/C.
0.82 Cum
B.1.4 Block work.B.1.4.1
225mm thick walls at steps. 6.75 Sqm
B.1.5 Finishing in Foundations: Cement and sand (1:6) render, smooth trowelled finish to;
B.1.5.1
225mm thick walls at demolished spaced of columns.
1.35 Sqm
B.1.5.2
225mm thick walls at steps. 0.68 Sqm
B.1.6 Painting in Foundations.B.1.6.1
Prepare and apply three (3) enamel coats paint, to rendered surfaces, externally.
0.83 Sqm
c) Subtotal 3: Substructure of Staffs Quarter.
B.2 SUPERSTRUCTUREB.2.1 Preliminaries.B.2.1.1
Safe removal of existing roof covering and framing (GCI sheet and timber). The removed GCI sheet shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering team.
1.00 Item
B.2.1.2
Safe removal and storage of the existing solar lighting panel and framing. The removed panels and framing shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering team.
1.00 Item
B.2.1.3
Safe removal of the existing ceiling covering and framing
1.00 Item
pg. 135
(hardboard and timber). The removed hardboard shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering team.
B.2.1.4
Safe removal of the existing block work of gables at both ends. The removed blocks shall be recycled according to the advice of Concern Engineering Team.
1.00 Item
B.2.1.5
provide for cutting of masonry sand crete block work on superstructure to the base the substructure of the existing building
1.00 Item
B.2.1.6
Demolition of existing beams at the front and rear part of the building and storage of the removed reinforcement bars.
1.00 Item
B.2.1.7
Provide for demolition of existing lintels at the internal walls of the building and storage of the removed reinforcement bars
1.00 Item
B.2.2 CONCRETE WORK: Reinforced in-situ concrete (1:2:4 -¾" aggregate), including all form works and assorted nails; in;
B.2.2.1
Columns. 1.22 Cum
B.2.2.2
Horizontal beams. 0.88 Cum
B.2.2.3
Lintels. 0.10 Cum
B.2.3 ROOFING.B.2.3.1
Corrugated iron roofing sheets, 28 gauges x 2440mm long, complete with fixing accessories.
190.49
Sqm
B.2.3.2
Ridge covering, 600mm girth x 1800mm long, complete with fixing accessories.
9.03 Lm
B.2.4 WOODWORK :Sawn hardwood timber, treated with coloured approved wood preservatives, in;
B.2.4.1
2" x 6" ridge board. 22.57 Lm
B.2.4.2
50mm x 100mm rafters. 48.27 Lm
B.2.4.3
50mm x 75mmpurlins @ 1000mm centres.
140.40
Lm
B.2.4.4
50mm x 100mm wall plates. 77.80 Lm
pg. 136
B.2.4.5
50mm x 150mm ceiling joists. 52.50 Lm
B.2.4.6
50mm x 75mm struts/braces. 52.50 Lm
B.2.4.7
50mm x 75mm ceiling joists. 85.75 Lm
B.2.4.8
50mm x 50mm ceiling noggings,@1200mmx600mmc/c.
167.36
Lm
B.2.5 Wrought hardwood timber, treated with clear approved wood preservative, in;
B.2.5.1
1" x 9" (finished) fascia/verge board, chamfered edge.
83.80 Lm
B.2.5.2
2" x 6" door frames; rebated. 43.50 Lm
B.2.5.3
½" x 2" (finished) cover strips 461.96
Lm
B.2.6 DOORS: Solid panelled; mahogany, single leaf door overall size with quality fittings;
B.2.6.1
2’ - 8" wide x 6’ - 8" high. 10.00 Nr
B.2.6.2
Mosquito mesh to single doors. 798.00
Sqm
B.2.7 MOSQUITO MESH to Windows.B.2.7.1
Mosquito mesh to single windows (1200mm x1000mm.
15.20 Sqm
B.2.7.2
Mosquito mesh to double windows. 161.28
Sqm
B.2.7.3
Mosquito mesh to vent windows. 43.20 Sqm
B.2.7.4
½" x 2" (finished) cover strips. 70.00 Lm
B.2.7.5
50mm x 300mm x3600mm, timber.
18.00 Lm
B.2.8 METAL WORK.B.2.8.1
Single Metal doors (2400mmx 2100mm).
4.00 Nr
B.2.8.2
Single metal windows (1200mm x1000mm).
4.00 Nr
B.2.8.3
Window casement Fasteners. 20.00 Nr
B.2.8.4
Window casement pegs stay (Fenders).
20.00 Nr
B.2.9 GlazingB.2.9.1
Plain glass 450mm x 300mm. 48.00
B.2.9.2
Obscure glass450mm x 300mm. 48.00 Pcs
B.2.9.4
Glazing putty. 67.20 Kg
pg. 137
B.2.10
FLOOR FINISHES: Cement and sand (1:3) screed on concrete floors;
B.2.10.1
50mm thick, to receive screed. 200.74
Sqm
B.2.11
WALL FINIHES: Cement and sand (1:6) rendering , 12mm thick to;
B.2.11.2
Internal walls. 18.67 Sqm
B.2.12
CEILING FINISHES: Hardboard sheets, 8' 0" x 4' 0" x 1/8" thick to fix underside of ceiling to timber with clout nails, inclusive of all 50 x 50mm noggins and hangers;
B.2.12.1
Internally. 200.74
Sqm
B.2.12.2
Externally. 25.14 Sqm
B.2.13
PAINTING WORKS: Prepare and apply three coats external quality enamel paint, to;
B.2.13.1
Externally rendered walls, 1500mm - 0'' below floor screed emulsion paint.
125.70
Sqm
B.2.13.2
Externally rendered walls, 1500mm - 0'' above floor screed enamel paint.
125.70
Sqm
B.2.14
PAINTING WORKS: Prepare and apply three coats emulsion paint, to;
B.2.14.1
Internally rendered walls, 1500mm enamel above floor screed.
207.44
Sqm
B.2.14.2
Internally rendered walls, 1200mm emulsion paint above the enamel paint.
165.95
Sqm
B.2.15
Soffits of hardboard ceiling including cover strips and corner strips;
B.2.15.1
Internally. 517.28
Sqm
B.2.15.2
Externally. 50.28 Sqm
B.2.16
Prepare and apply three coats oil based paint to;
B.2.16.1
Fascia board, not exceeding 300mm girth.
56.57 Sqm
B.2.17
Prepare and apply two coats polyurethane clear lacquer, matt surface finish, to;
B.2.17.1
Timber panelled doors including frames.
19.95 Sqm
pg. 138
B.3 EXTERNAL DRAINAGE WORKS:B.3.1 Excavation.B.3.1.1
Excavate trenches, starting from site strip level, average 500mm wide x 500mm deep.
20.95 Cum
B.3.1.2
Dispose of surplus excavated materials after back filling.
6.98 Cum
B.3.2 Plain in - situ concrete (1:3:6 -¾" aggregate), including all form works and assorted nails in;
B.3.2.1
75mm thick base of the drainage. 3.14 Cum
B.3.3 Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6) and laid to two sides of concrete base in trench;
B.3.3.1
100mm thick walls. 74.63 Sqm
B.3.4 Cement and sand (1:6) render, smooth trowelled finish, to;
B.3.4.1
Inside of block walls. 114.14
Sqm
B.3.5 Aprons.B.3.5.1
Depositing and compacting in layers, maximum 100mm thick, selected hard-core (ball stone) materials, obtained off site, to make up levels, average 150mm thickness well rammed and levelled to an even surface.
41.90 Sqm
B.3.6 Plain in - situ concrete (1:3:6 -¾" aggregate), including all form works and assorted nails; as;
B.3.6.1
Apron Floor Concrete, 75mm thick, laid to falls and formwork to edges of apron, not exceeding 50mm wide.
3.77 Cum
d) Subtotal 4: Superstructure of Staffs Quarter.
C SEPTIC TANK & SOAK WAY PIT AT STAFF QUARTERS.
C1 SUBSTRUCTURE.C1.1 Site Clearance.C1.1.1
Clear the whole site of bushes and shrubs; remove debris from site.
1.00 Item
C1.2 Excavation of Strip levels.C1.2 Excavate over site, average
150mm deep, to remove top soil and vegetable matter, dispose of excavated materials.
0.90 Cum
pg. 139
C1.3 Excavating, starting at site strip level, maximum depth not exceeding 3000mm to
C1.3.1
Pit Dimensions: 2,400mm x 1800mm x 3000mm
12.96 Cum
C1.3.2
Soak away pit Dimension: 2000mm diameter x1500mm depth.
4.71 Cum
C1.4 Depositing and compacting in maximum layers of 100mm thick of selected materials arising from excavations, to;
C1.4.1
Make up levels to sides of excavations.
0.60 Cum
C1.5 Cover, fill, level and compact selected hard-core (ball stones) materials, obtained off- site, to
C1.5.1
Provide for polyethylene sheet cover to surface of the soak away pit.
1.81 Cum
C1.5.2
Filling to soak away pit wit selected ball stones.
4.71 Cum
C1.5.4
Safe Disposal of surplus excavated materials from Soak away pit.
4.71 Cum
C1.5.5
Safe Disposal of surplus excavated materials from Septic tanks.
18.00 Cum
C1.6 Concrete Work in Foundation: Plain in-situ concrete (1:3:6 -1½" aggregate), including all form works and assorted nails; as;
C1.6.1
Base Concrete blinding of 150mm thick, lay to fall.
0.90 Cum
C1.6.2
450 x450 mm Concrete Manhole cover, 100mm thick 3Nos.
0.02 Cum
C1.7 Reinforced in-situ concrete (1:2:4 -¾" aggregate), in 12mm plain round mild steel bar reinforcement @ 175mm C/C, BS4449; in foundation in 6mm links and stirrups @ 225mm C/Including all necessary form works and assorted nails in;
C1.7.1
150mm baffle cross beam thick at midway and top in 12mm diameter Straight and bent bars @175mmc/c in Links and stirrups, (in pit), 6mm diameter @225mm c/c.
0.27 Cum
C1.7.2
Suspended Floor Slab in Straight and bent bars, of 12 mm
0.90 Cum
pg. 140
diameter(distribution & a main bars)@150 c/c.
C1.73 Ground ring beams 12mm rods@150c/c in Links and stirrups, in ring beam(in pit), 6mm diameter @225mm c/c.
0.34 Cum
C1.18 Block work in Foundations :Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6), in;
C1.18.1
150mm thick walls. 30.00 sum
C1.18.1
Finishes in Foundations :Cement and sand (1:6) render, smooth trowelled finish to;
C1.18.2
225mm thick block wall in mortar bed to receive reinforced concrete slabs covering to septic tank.
30.00 Sqm
C2.19 Internal block wall and concrete surfaces, 25mm thick.
15.00 Sqm
e) Subtotal 5: Septic Tank and Soak away Pit.
D CONSTRUCTION OF LINED VIP LATRINE (8 Cubicles).
D1 SUBSTRUCTURE.D1.1 Site Clearance.D1.1.1
Clear the whole site of bushes and shrubs; remove debris from site.
1.00 Item
D1.2 Excavation.D1.2.1
Excavate over site, average 150mm deep, to remove top soil and vegetable matter, dispose of excavated materials.
10.31 Cum
D1.2.2
Excavate toilet pit maximum depth not exceeding 3000mm depth starting at strip levels.
72.06 cu.m
D1.2.3
Strip foundation for the rear drainage.
2.77 cu.m
D1.2.4
Pads to receive column bases in foundations
1.08 cu.m
D1.3 Concrete Work in Foundations: Plain in-situ Mass concrete (1:3:6 -1½" aggregate) and assorted nails, as;
D1.3.1
Pad foundation Concrete 150mm thick (average).
1.09 cu.m
D1.3.2
Concrete floor to pit base of 150mm thick.
3.79 Cu m
D1.3.3
Concrete Floor to Steps, 150mm thick.
3.89 Cu m
D1.3. Concrete to entrance ramp, 1.11 Cu
pg. 141
4 150mm thick. mD1.3.5
Floor concrete to Apron, 100mm thick.
1.37 Cu m
D1.3.6
Floor Concrete to Walkway, 150mm thick.
1.30 Cu m
D1.3.7
Concrete to drainage floor of 75mm thick.
1.14 Cu m
D1.3.8
Concrete to Sides of drainage of 100mm thick.
0.62 Cu m
1.4 Filling Selected hard-core (ball stones) materials, obtained off- site, to;
D1.4.1
Apron of 150mm thick, levelled and compacted.
2.06 Cu m
D1.4.2
Walkway of 150mm thick levelled and compacted.
1.30 Cu m
D1.4.3
Ramp of 150mm thick, levelled and compacted.
1.11 Cu m
D1.5 Reinforced in-situ concrete (1:2:4 -¾" aggregate), in 12mm plain round mild steel bar reinforcement @ BS4449; in 6mm links and stirrups @ 225mm C/C; including all necessary form works and assorted nails, in;
D1.5.1
Column bases, 225mm thick. 1.01 Cu m
D1.5.2
Straight and bent bars, in Columns ,12 mm diameter@175mm c/c in links and stirrups, in Columns, 6mm diameter @225mmc/c.
1.12 Cu m
D1.5.3
Straight and bent bars, in suspended floor150mm thick , 12 mm diameter(distribution & main bars)@150 c/c.
4.85 Cu m
D1.5.4
Ground Ring beam in 6mm diameter links and stirrups @225mm c/c.
1.35 Cu m
D1.5.5
Baffle cross beam in links and stirrups, in Ground ring beam to substructure, 6mm diameter @225mm c/c.
0.14 Cu m
f) Sub Total 6: Substructure of Lined VIP Latrine.
D2 SUPERSTRUCTURED2.1 Reinforced in-situ concrete
(1:2:4 - ¾" aggregate), in 12mm diameter, plain round mild steel bar reinforcement, BS4449; in foundation in 6mm diameter links & stirrups@225mm C/C;
pg. 142
including all necessary form works and assorted nails, in;.
D2.1.1
Wall Plate of 100mm thick in Straight and bent bar, 12 mm diameter@175mm c/c and links and stirrups, in wall plates, 6mm diameter @225mm c/c.
0.40 Cu m
D2.1.2
225mm thick ring beam 12mm rods (distribution bars)@150 c/c.
0.90 Cu m
D2.2 Superstructure formwork.D2.2.1
Ring beam (Timber size of 3600mmx 300mmx 25mm).
16.02 Sq. m
D2.3 Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6), in;
D2.3.1
225mm thick walls in pit. 75.86 Sq. m
D2.3.2
150mm thick walls. 16.43 Sq. m
D2.4 Plastering: Cement and sand (1:3) render, smooth trowelled finish to;
D2.4.1
Block wall and concrete surfaces, 12mm thick; externally.
103.31
Sq. m
D2.4.2
Block wall and concrete surfaces, 12mm thick; internally to superstructure.
103.31
Sq. m
D2.4.3
Block wall and concrete surfaces, 12mm thick; internally to pit lining.
244.40
Sq. m
D2.4.4
Screed application- 50mm thick Cement and sand (1:3) screeded, smooth trowelled finish to floors.
36.43 Sq. m
D2.5 Painting.D2.5.1
Prepare and apply three (3) coats Emulsion paint, to Rendered surfaces, internally.
45.08 sq. m
D2.5.2
Prepare and apply three coats enamel paint, to Rendered surfaces, externally.
78.89 sq. m
D2.5.3
Prepare and apply three (3) coats Emulsion paint, to Rendered surfaces, Externally.
56.35 sq. m
D2.5.4
Prepare and apply three coats enamel paint, to Rendered surfaces, internally.
56.35 sq. m
D2.5.5
Paint to doors (900mmx 2100mm).
11.34 sq. m
D2.5.6
Paint to double doors (1200mmx 2100mm).
5.04 sq. m
D2.5.7
Paint to fascia board (3600mmx 225mmx25mm).
6.50 sq. m
D2.6 Roofing.
pg. 143
D2.6.1
GCI sheets 28 gauge 2400mm long.
33.50 sq. m
D2.6.2
Rafters 50mmx100mmx3600mm@1200 c/c.
119.00
Lm
D2.6.3
Purlins 50mmx75mmx3600mm@900 c/c.
51.00 Lm
D2.6.4
Fascia board 25mmx 225mmx3600mm.
28.90 Lm
D2.6.5
Metal double doors 2100mmx 1200mm.
2.00 nr
D2.6.6
Metal Single doors 2100mmx 900mm.
6.00 nr
D2.6.7
uPVC 150mm diameter Vent pipes. 18.00 Lm
D2.6.8
Brackets for uPVC150mm diameter Pipes.
16.00 nr
D2.6.9
Mosquitoes mesh to Latrine Ventilations (500mmx 500mm).
16.00 sq. m
g) Subtotal 7: Lined VIP Latrine Super Structure.
E RAINWATER HARVESTING SYSTEMS CONSTRUCTION TO VIP LATRINE WITH HAND WASHING FACILITY.
E1 Excavation.E1.1 Excavate foundation trenches
starting at site strip level, maximum depth not exceeding 600mm.
2.0 Cu m
E1.2 Filling and disposal of excavated materials.
E1.2.1 Deposit and compact selected excavated materials in layers, to maximum of 100mm thick.
0.5 Cu m
E1.2.2 Select hard-core/ball stones, spread and compact in a 300mm thick layer beneath floor slabs.
0.7 Cu.m
E1.2.3 Dispose of surplus excavated materials.
0.8 Cu.m
E1.3 Concrete Applications.E1.3.1 Mass Concrete blinding of mix
1:3:6 of 75mm thick on hard-core surface.
0.2 Cu m
E1.4 Reinforced in-situ concrete (1:2:4 -¾" aggregate);12mm plain round mild steel bar reinforcement, BS4449; in foundation straight and bent bars, with 6mm diameter mild steel links and stirrups @200mm C/C; including all form works and assorted nails.
pg. 144
E1.4.1 Ground beam in 12 mm diameter rebar's in links & stirrups spaced @200mm C/C.
0.7 Cu m
E1.4.2 Plastic tank base slab of 150mm thick of 12mm main and distribution rbars spaced @ 150mm C/C.
0.5 Cu m
E1.4.3 150mm thick horizontal cross beams in12mm diameter rbars in links & stirrups spaced @200mm C/C.
0.2 Cu m
E1.5 Block wall construction.E1.5.1 Precast sandcrete solid blocks,
225 mm thick bedded and jointed in cement mortar (1:6).
5.0 Sq. m
E1.6 PLUMBING WORKS (PIPE INSTALLATION).
E1.6.1 Supply and installation of a plastic cold water tank of 2000 litres (white colour) on constructed masonry platform ,according to drawings; including all connections and plumbing accessories
1.0 Item
E1.6.3 Supply and install uPVC down pipe of 100 diameters, secured to wall with aluminium bracket; including necessary jointing accessories (elbows, tee piece etc.).
6.0 L m
E1.6.4 Supply and install uPVC roof gutter of 150mm diameter, secured to facia board with roof gutter bracket brackets; necessary jointing accessories (elbows, tee piece, reducing sockets etc.)
7.0 L m
E1.6.5 Supply uPVC wastewater pipe of 50mm diameter, secured to wall with aluminium bracket; including necessary jointing accessories (elbows, tee piece etc.).
3.0 L m
E1.6.6 Supply and installation of 100mm end plug as control valve to discharge end of the first flush device as drain point for the first rain.
1.0 No.
E1.6.7 Supply and install the distribution Up pipe of 19 mm diameter, secure to the wall and connected to a 19mm tap at the draw off supply point.
3.0 L m
E1.7 Application of Plaster to Walls;E1.7.1 Cement and sand rendering to
external walls of 12mm thick, in mix of 1:6.
8.0 Sq. m
pg. 145
h) Sub Total 8: Construction of RWH Systems.
F INCENERATOR CONSTRUCTION.F1 SUBSTRUCTURE.F1.1 Site Clearance.F1.1.1 Clear the whole site of bushes and
shrubs; remove debris from site.1.00 Item
F1.2 Excavation.F1.2.1 Excavate over site, average
150mm deep, to remove top soil and vegetable matter, dispose of excavated materials.
0.86 Cum
F1.2.2 Excavation of trenches, starting at site strip levels to receive concrete footing in foundation maximum width not exceeding 450mm.
0.85
CumF1.3 Depositing and compacting in
layers, maximum 100mm thick selected materials arising from excavations, to;
F1.3.1 Make up levels under floors. 0.11 CumF1.4 Selected hard-core (ball
stones) materials, obtained off- site and Safe Disposal of excess materials to;
F1.4.1 Make up levels under floors, 150mm thick hard-core, well rammed and levelled to an even surface.
0.05 Cum
F1.4.2 Dispose of surplus excavated materials.
0.65 Cum
F1.5 Concrete Work in Foundations: Plain in-situ mass concrete (1:3:6 -1½" aggregate), including all necessary form works and assorted nails; as;
F1.5.1 Footing in trenches, 150mm thick. 0.28 CumF1.5.2 Concrete over site, 150mm thick. 0.22 CumF1.6 Block work in Foundations:
Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6), in;
F1.6.1 225mm thick walls. 3.66 SqmF1.7 Finishes in Foundations:
Cement and sand (1:6) render, smooth finish to;
F1.7.1 Block wall and concrete surfaces, 12mm thick; internal & external.
3.66 Sqm
F1.8 Painting in Foundations.F1.8.1 Prepare and apply three (3)
enamel coats paint, to rendered surfaces, externally.
3.66 Sqm
pg. 146
i) Subtotal 9: Substructure of Incinerator.
F2 SUPERSTRUCTURE.F2.1 Reinforced in-situ concrete
(1:2:4 -¾" aggregate),in 12mm plain round mild steel bar reinforcement BS4449, straight and bent bars, 12 mm with 6mm diameter links and stirrups spaced 200mm C/C, with all form works and assorted nails; in;
F2.1.1 Lintels. 0.03 CumF2.1.2 100mm thick slab to receive
chimney stall, allow provision to opening for chimney and 50mm thick slab to chimney cover to protect structure from adverse weather effects; including rain.
0.04 Cum
F2.2 CIVARAM BRICKWORK: Precast burnt clay fire bricks (1:6) , bedded and jointed in cement mortar (1:6), in;
F2.2.1 100mm thick walls. 11.52 Sqm,
F2.3 BLOCK WORKS: Precast solid sandcrete blocks, bedded and jointed in cement mortar (1:6) around perimeter of incinerator
F2.3.1 150mm thick walls. 12.60 SqmF2.4 ROOFING.F2.4.1 Corrugated iron roofing sheets, 28
gauges x 2440mm long, complete with fixing accessories.
12.25 Sqm
F2.5 WOODWORK: Sawn hardwood timber, treated with coloured approved wood preservatives, in;
F2.5.1 50mm x 100mm rafters/ Sanctions.
31.00 Lm
F2.5.2 50mm x 75mm purlins @ 1000mm centres/horizontals.
30.00 Lm
F2.5.3 50mm x 100mm wall plates. 14.00 LmF2.5.4 50mm x 75mm struts/braces. 7.00 LmF2.5.5 Fascia board
(3600mmx225mmx25mm).14.00 Lm
F2.6 Doors: Solid Batten mahogany, single leaf dwarf door overall size with quality fittings.
F2.6.1 2’ - 8" wide x 4" high. 1.00 NrF2.7 METAL WORK.
pg. 147
F2.7.1 Metal steel door and frame to fire box (dim: 700mm x 600mm) complete with 2 bolts.
2.00 Nr
F2.7.2 Steel metal fire tray made of 16mm rebar welded web @ 25mm x25mm centre both ways dimension 1000mm x1000mm.
1.00 Nr
F2.8 FLOOR FINISHES: Cement and sand (1:3) screed on concrete floors,
F2.8.1 50mm thick, to receive screed. 2.56 SqmF2.9 WALL FINSHES: Cement and
sand (1:6) rendering to walls, 12mm thick;
F2.9.1 Internally. 10.80 SqmF2.9.2 Externally. 12.42 SqmF2.10 PAINTING: Prepare and apply
three coats external quality enamel paint, to;
F2.10.1
Externally rendered walls, 1200mm - 0'' above enamel paint.
12.42 Sqm
F2.11 PAINTING: Prepare and apply three coats emulsion paint, to;
F2.11.1
Internally rendered walls, 1200mm enamel above floor screed.
11.34 Sqm
F2.12 PAINTING: Prepare and apply three coats oil based paint to;
F2.12.1
Fascia board, not exceeding 300mm girth.
3.50 Sqm
F2.12.2
Timber batten dwarf doors; including frames.
2.28 Sqm
j) Subtotal 10: Superstructure of Incinerator.
F3 EXTERNAL DRAINAGE WORKS AROUND THE INCINERATOR.
F3.1 Excavation.F3.1.1 Excavate trenches, starting from
site strip level, average 500mm wide x 450mm deep
1.96 Cum
F3.1.2 Dispose of surplus excavated materials after back filling.
0.44 Cum
F3.2 Plain in - situ concrete (1:3:6 -¾" aggregate), including all formworks and assorted nails; in;
F3.2.1 75mm thick base of the drainage. 0.33 CumF3.3 BLOCKWORK: Precast
sandcrete solid blocks, bedded and jointed in cement mortar (1:6) and laid to two sides of concrete base in trenches.
F3.3.1 100mm thick walls. 11.52 Sqm
pg. 148
F3.4 Cement and sand (1:6) render, smooth trowelled finish, to;
F3.4.1 Inside of block walls. 13.10 SqmF3.5 Aprons.F3.5.1 Depositing and compacting in
maximum layers of 100mm thick, selected hard-core (ball stone) materials, obtained off site, to make up levels, average 150mm thickness well rammed and levelled to an even surface.
1.75 Cum
F3.6 Plain in - situ concrete (1:3:6 -¾" aggregate), including all necessary form works and assorted nails, as;
F3.6.1 Apron floor concrete, 50mm thick, laid to falls and formwork to edges of apron, not exceeding 50mm wide.
0.58 Cum
k) Subtotal 11: External drainage works at the Incinerator.
G EXTENSION OF POSTNATAL UNIT.
G1 SUBSTRUCTUREG1.1 PreliminariesG1.1.1
Provide for any cutting of masonry sand crete block work from over site concrete to the footing of the existing building.
1.00 Item
G1.1.2
Provide for clearing of cuttings from existing structure and cart away as appropriate.
1.00 Item
G1.1.3
Backfilling and disposal of excavated materials deposited and compacting in maximum layers of 100mm thick of selected materials to make up levels at constructed column points.
1.00 Item
G1.1.4
Selected hard-core (ball stones) materials, obtained off- site, to make up levels under floors, 150mm thick average, well rammed and levelled to an even surface at areas of constructed column points.
1.00 Item
G1.2 Site Clearance.G1.2.1
Clear the whole site of bushes and shrubs; remove debris from site.
1.00 Item
G1.3 Excavation.G1.3.1
Excavate over site, average 150mm deep, to remove top soil and vegetable matter, dispose of
4.37 Cum
pg. 149
excavated materials.G1.3.2
Excavating, trenches starting at site strip level, maximum depth not exceeding 900mm to receive concrete footing in foundations depending on the site soil formation.
5.42 Cum
G1.4 Depositing and compacting in layers, maximum 100mm thick of selected materials arising from excavations, to;
G1.4.1
Make up levels under floors. 13.12 Cum
G1.5 Selected hard-core (ball stones) materials, obtained off- site, to;
G1.5.1
Make up levels under floors, 150mm thick average, well rammed and levelled to an even surface.
4.37 Cum
G1.6 Concrete in Foundations: Plain in-situ mass concrete (1:3:6 -1½" aggregate), including all necessary form works and assorted nails; as;
G1.6.1
Concrete over site 150mm thick. 0.90 Cum
G1.6.2
Concrete in Steps. 0.97 Cum
G1.7 Reinforced in-situ concrete (1:2:4 -¾" aggregate), in 12mm diameter plain round mild steel bar reinforcement, BS4449; in foundation and 6mm diameter links & stirrups spaced @ 225mm C/Including all necessary form works and assorted nails;
G1.7.1
12 mm diameter Straight and bent bars, in column and column bases, Column bases (675mm x 675mm x 900mm) and 225mm thick Columns kickers in foundations, 900mm high.
0.21 Cum
G1.8 Block work in Foundations: Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6), in;
G1.8.1
225mm thick walls at demolished spaced of columns.
9.04 Sqm
G1.8.2
225mm thick walls at steps. 1.08 Sqm
G1.9 Finishing in Foundations:
pg. 150
G1.9.2
225mm thick walls at demolished spaced of columns.
9.04 Sqm
G1.9.3
225mm thick walls at steps. 1.08 Sqm
G1.10 Painting in FoundationsG1.10.1
Prepare and apply three (3) enamel coats paint, to rendered surfaces, externally.
9.04 Sqm
l) Subtotal 12: Substructure of Postnatal Extension.
G2 SUPERSTRUCTURE.G2.1 Preliminaries.G2.1.1
Safe removal of existing roof covering and framing (GCI sheet and timber). The removed GCI sheet shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering team.
1.00 Item
G2.1.2
Safe removal and storage of the existing solar lighting panels and framing. The removed panel and framing shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering team.
1.00 Item
G2.1.3
Safely remove existing ceiling covering and framing (hardboard and timber). The removed hardboard is the property of Concern worldwide and the timber should be recycled as advice by Concern engineering team.
1.00 Item
G2.1.4
Safe removal of existing block work of gables at both ends. The removed blocks shall be recycled according to the advice by Concern Engineering team.
1.00 Item
G2.1.5
Provide for cutting of masonry sand crete block work on superstructure to the base the substructure of the existing building
1.00 Item
G2.1.6
Demolition of existing beam at the frontage and rear of the building and store the removed reinforcement bars
1.00 Item
G2.1.7
Provide for demolition of existing lintels at the internal walls of the building and store the removed reinforcement bars.
1.00 Item
pg. 151
G2.2 CONCRETE WORK: Reinforced in-situ concrete (1:2:4 -¾" aggregate), in 12mm diameter plain round mild steel bar reinforcement BS4449, straight and bent bars, and 6mm diameter links & stirrups spaced 225mm C/Including all form works and assorted nails, in;.
G2.2.1
Horizontal beams. 0.22 Cum
G2.2.2
Lintels. 0.22 Cum
G2.3 Plain in-situ concrete (1:3:6 -¾"aggregate), including all form works and assorted nails; on;
G2.3.1
Gable walls to support purlins. 0.35 Cum
G2.4 BLOCKWORK: Precast sandcrete (1:6) solid blocks, bedded and jointed in cement mortar (1:6), in;
G2.4.1
150mm thick walls. 15.51 Sqm
G2.5 ROOFING.G2.5.1
Corrugated iron roofing sheets, 28 gauges x 2440mm long, complete with fixing accessories.
43.84 Sqm
G2.6 WOODWORK: Sawn hardwood timber, treated with coloured approved wood preservatives, in;
G2.6.1
50mm x 100mm rafters. 51.94 Lm
G2.6.1
50mm x 75mm purlins @ 1000mm centres.
93.35 Lm
G2.6.2
50mm x 100mm wall plates. 10.34 Lm
G2.6.3
50mm x 150mm ceiling Joists. 14.48 Lm
G2.6.4
50mm x 75mm struts/braces. 3.66 Lm
G2.6.5
50mm x 50mm ceiling noggings,@1200mmx600mm c/c.
79.20 Lm
G2.7 Wrought hardwood timber, treated with clear approved wood preservative, in;
G2.7.1
1" x 9" (finished) fascia/verge board, chamfered edge.
13.44 Lm
G2.7.2
½" x 2" (finished) cover strips. 87.10 Lm
pg. 152
G2.8 Windows.G2.8.2
Mosquito mesh to windows (1200mm x1, 800mm).
4.51 pcs
G2.8.3
½" x 2" (finished) cover strips. 77.28 pcs
G2.8.4
50mm x 300mm x3600mm timber Framings.
77.28 Kg
G2.9 FABRICATION OF METAL WORK.
G2.9.1
Single Metal doors 2400mmx 2100mm.
1.00 Nr
G2.10 Windows.G2.10.1
Double metal windows 1200mm x1800mm.
2.00 Nr
G2.10.2
Window casement Fasteners. 8.00 Nr
G2.10.3
Window casement pegs stay (Fenders.)
8.00 Nr
G2.11 Glazing.G2.11.1
Plain glass 450mm x 300mm. 16.00 Sqm
G2.11.2
Obscure glass450mm x 300mm. 16.00 Sqm
G2.11.3
Glazing putty. 4.00 Sqm
G2.12 FLOOR FINSHES: Cement and sand (1:3) screed on concrete floors,
G2.12.1
50mm thick, to receive screed. 29.15 Sqm
G2.13 WALL FINISHES: Cement and sand (1:6) rendering to walls, 12mm thick,
G2.13.1
Internally. 16.52 Sqm
G2.13.2
Externally. 13.18 Sqm
G2.14 CELINING FINISHES: Hardboard sheets, 8' 0" x 4' 0" x 1/8" thick to fix underside of ceiling to timber with clout nails, inclusive of all 50 x 50mm noggins and hangers;
G2.14.1
Internally. 29.15 Sqm
G2.14.2
Externally 7.96 Sqm
G2.15 PAINTING: Prepare and apply three coats external quality enamel paint, to;
G2.15.1
Externally rendered walls, 1500mm - 0'' above floor screed.
18.36 Sqm
G2.15 Externally rendered walls, 18.36 Sqm
pg. 153
.2 1500mm - 0'' above enamel paint.G2.16 PAINTING: Prepare and apply
three coats emulsion paint, to;G2.16.1
Internally rendered walls, 1500mm enamel above floor screed.
18.36 Sqm
G2.16.2
Internally rendered walls, 1200mm emulsion paint above the enamel paint.
14.69 Sqm
G2.17 Soffits of hardboard ceiling including cover strips and corner strips.
G2.17.1
Internally. 29.15 Sqm
G2.17.2
Externally. 7.96 Sqm
G2.18 Prepare and apply three coats oil based paint to;
G2.18.1
Fascia board, not exceeding 300mm girth.
3.02 Sqm
G2.18.2
Metal door including frame. 1.53 Sqm
m) Sub Total 13: Super structure of Post Natal Extension.
G3 EXTERNAL DRAINAGE WORKS FOR THE POSTNATAL EXTENSION.
G3.1 Excavation and Disposal of excess materials.
G3.1.1
Excavate trenches, starting from site strip level, average 500mm wide x 500mm deep.
5.33 Cum
G3.1.2
Dispose of surplus excavated materials after back filling.
5.33 Cum
G3.2 Plain in - situ concrete (1:3:6 -¾" aggregate), including all necessary form works and assorted nails; in;
G3.2.1
75mm thick base of the drainage. 0.78 Cum
G3.3 Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6) and laid to two sides of concrete base in trenches.
G3.3.1
100mm thick walls. 0.23 Sqm
G3.4 Cement and sand (1:6) render, smooth trowelled finish, to;
G3.4.1
Inside of block walls. 0.23 Sqm
G3.5 Aprons.G3.5. Depositing and compacting in 1.44 Cum
pg. 154
1 maximum layers of 100mm thick, of selected hard-core (ball stone) materials, obtained off site, to make up levels, average 150mm thickness well rammed and levelled to an even surface.
G3.6 Plain in - situ concrete (1:3:6 -¾" aggregate), including all necessary form works and assorted nails; as;
G3.6.1
Apron floor concrete, 50mm thick, laid to falls and formwork to edges of apron, not exceeding 50mm wide.
0.50 Cum
n) Subtotal14: External Drainage Works for Post Natal Extension.
H EXTENSION OF LABORATORY ROOM.
H1 SUBSTRUCTURE.H1.1 Preliminaries.H1.1.1
Provide for any cutting of masonry sand crete block work from over site concrete to the footing of the existing building.
2.00 Item
H1.1.2
Provide for clearing of cuttings from existing structure and cart away as appropriate.
1.00 Item
H1.1.3
Filling and disposal of excavated materials deposited and compacting in maximum layers of 100mm thick of selected materials to make up levels at constructed column points.
1.00 Item
H1.1.4
Apply Selected hard-core (ball stones) materials, obtained off- site, to make up levels under floors, 150mm thick average, well rammed and levelled to an even surface at areas of constructed column points.
1.00 Item
H1.2 Excavation.H1.2.1
Excavation of trenches, starting at site strip level, maximum depth not exceeding 900mm,to receive concrete footing in foundations
3.57 Cum
H1.3 Depositing and compacting in maximum layers of 100mm thick selected materials arising from excavations, to;
H1.3.1
Make up levels under floors. 0.80 Cum
H1.4 Selected hard-core (ball
pg. 155
stones) materials, obtained off- site, to;
H1.4.1
Make up levels under floors, 150mm thick average, well rammed and levelled to an even surface.
0.80 Cum
H1.5 Concrete Work in Foundations: Plain in-situ concrete (1:3:6 -1½" aggregate), including all necessary form works and assorted nails, as ;
H1.5.1
Concrete in over site 150mm thick.
0.80 Cum
H1.5.2
Concrete in Steps, 150mm thick. 1.94 Cum
H1.6 Reinforced in-situ concrete (1:2:4 -½" aggregate), in 12mm diameter plain round mild steel bar reinforcement, BS4449; in foundation and 6mm diameter links and stirrups spaced @ 225mm C/C ;including all necessary form works and assorted nails;
H1.6.1
12 mm diameter straight and bent bars, in column bases, and 225mm Columns kickers in foundations, 900mm high.
0.41 Cum
H1.7 Block work in Foundations: Precast sandcrete solid blocks, bedded and jointed in cement mortar (1:6), in;
H1.7.1
225mm thick walls at demolished spaced of columns.
1.62 Sqm
H1.7.2
225mm thick walls at steps. 3.30 Sqm
H1.8 Finishing in Foundations: Cement and sand (1:6) render, smooth trowelled finish to;
H1.8.1
225mm thick walls at demolished spaced of columns.
1.66 Sqm
H1.8.1
225mm thick walls at steps. 3.00 Sqm
H1.9 Painting in Foundations.H1.9.1
Prepare and apply three (3) enamel coats paint, to rendered surfaces, externally.
0.50 Sqm
o) Sub total15: Substructure of Dot/laboratory room.
H2 SUPERSTRUCTURE.H2.1 Preliminaries.H2.1.1 Safe removal of existing roof
covering and framing (GCI sheet 1.00 Item
pg. 156
and timber). The removed GCI sheet shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering team.
H2.1.2 Safe removal and storage of the existing solar lighting panels and framing. The removed panels and framing shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering team.
1.00 Item
H2.1.3 Safe removal of existing ceiling covering and framing (hardboard and timber). The removed hardboard shall be handed over to Concern worldwide and the timber shall be recycled according to the advice of Concern Engineering team.
1.00 Item
H2.1.4 Safe removal of existing block work of gables at both ends. The removed blocks shall be recycled according to the advice of Concern Engineering team.
1.00 Item
H2.1.5 Provide for cutting of masonry sand crete block work on superstructure to the base of the substructure of the existing building.
1.00 Item
H2.1.6 Demolition of existing beam at the frontage and rear of the building and store the removed reinforcement bars safely.
1.00 Item
H2.1.7 Provide for demolition of existing lintels at the internal walls of the building and store the removed reinforcement bars safely.
1.00 Item
H2.2 CONCRETE WORK: Reinforced in-situ concrete (1:2:4 - ¾" aggregate), in 12mm plain round mild steel bar reinforcement BS4449, straight and bent bars and 6mm diameter links & stirrups spaced @ 225mm C/C; including all necessary form works and assorted nails, in;
H2.2.1
Horizontal beams. 0.41 Cum
H2.2.2
Lintels. 0.14 Cum
pg. 157
H2.3 Plain in-situ concrete (1:3:6 -¾"aggregate), including all necessary form works and assorted nail, on;
H2.3.1
Gable walls to support purlins. 1.01 Cum
H2.4 BLOCKWORK: Precast sandcrete (1:6) solid blocks, bedded and jointed in cement mortar (1:6), in;
H2.4.1
150mm thick walls. 14.42 Sqm
H2.5 ROOFING.H2.5.1
Corrugated iron roofing sheets, 28 gauges x 2440mm long, complete with fixing accessories.
6.05 Sqm
H2.6 WOODWORK :Sawn hardwood timber, treated with coloured approved wood preservatives, in;
H2.6.1
50mm x 100mm rafters. 31.50 Lm
H2.6.2
50mm x 75mmpurlins @ 1000mm centres.
62.40 Lm
H2.6.3
50mm x 100mm wall plates. 4.34 Lm
H2.6.4
50mm x 150mm ceiling joists. 8.68 Lm
H2.6.5
50mm x 75mm struts/braces. 2.16 Lm
H2.6.6
50mm x 50mm ceiling noggings,@1200mm C/C.
15.32 Lm
H2.7 Wrought hardwood timber, treated with clear approved wood preservative, in;
H2.7.1
1" x 9" (finished) fascia/verge board, chamfered edge.
9.50 Lm
H2.7.2
½" x 2" (finished) cover strips. 15.32 Lm
H2.7.3
WINDOWS.
H2.7.4
Mosquito mesh to windows. 9.02 Sqm
H2.7.5
½" x 2" (finished) cover strips. 48.24 Lm
H2.7.6
50mm x 300mm x3600mm timber Framings.
9.65 Lm
H2.8 FABRICATION OF METAL DOORS.
H2.8.1
Single Metal doors 2400mmx 2100mm.
1.00 Nr
H2.9 Windows.H2.9. Double metal windows 1200mm 2.00 Nr
pg. 158
1 x1800mm.H2.9.2
Window casement Fasteners. 8.00 Nr
H2.9.3
Window casement pegs stay (Fenders).
8.00 Nr
H2.10 Glazing.H2.10.1
plain glass 450mm x 300mm. 16.00 pcs
H2.10.2
Obscure glass450mm x 300mm. 16.00 pcs
H2.10.3
Glazing putty. 2.00 Kg
H2.11 FLOOR FINISHES: Cement and sand (1:3) screed on concrete floors,
H2.11.1
50mm thick, to receive screed. 7.03 Sqm
H2.12 WALL FINISHES: Cement and sand (1:6) rendering to walls, 12mm thick,
H2.12.1
Internally. 15.71 Sqm
H2.12.2
Externally. 15.71 Sqm
H2.13 CEILING FINISHES :Hardboard sheets, 8' 0" x 4' 0" x 1/8" thick to fix underside of ceiling to timber with clout nails, inclusive of all 50 x 50mm noggins and hangers;
H2.13.1
Internally. 25.69 Sqm
H2.13.2
Externally. 6.01 Sqm
H2.14 PAINTING: Prepare and apply three coats external quality enamel paint, to;
H2.14.1
Externally rendered walls, 1500mm - 0'' above floor screed.
13.86 Sqm
H2.14.2
Externally rendered walls, 1500mm - 0'' above enamel paint
13.86 Sqm
H2.15 PAINTING: Prepare and apply three coats emulsion paint, to;
H2.15.1
Internally rendered walls, 1500mm enamel above floor screed.
13.86 Sqm
H2.15.2
Internally rendered walls, 1200mm emulsion paint above the enamel paint.
11.09 Sqm
H2.16 Soffits of hardboard ceiling including cover strips and corner strips;
H2.16.1
Internally. 61.63 Sqm
pg. 159
H2.16.2
Externally. 6.01 Sqm
H2.17 PAINTING: Prepare and apply three coats oil based paint to;
H2.17.1
Fascia board, not exceeding 300mm girth
2.62 Sqm
H2.17.2
Metal door including frame. 1.53 Sqm
p) Subtotal 16: Superstructure of Laboratory room.
COSTS SUMMARYITEMS WORK COMPONENT TOTAL
COSTS (SLL)
A MAIN BUILDINGS: (Sub Total 1+Sub Total 2).B STAFF QUARTER DUPLEX, KITCHEN, TOILETS AND
WASH ROOMS: (Sub Total 3+ Sub Totals 4).C SEPTIC TANKS & SOAK WAY PITS AT STAFF
QUARTERS: Sub Total 5D LINED VIP LATRINE CONSTRUCTION: (Sub Total 6+
Sub Total 7).E CONSTRUCTION OF RAIN WATE HARVESTING
SYSTEMS FOR HAND WASHING FACILITY AT THE LATRINE :(Sub T0tal 8)
F INCENERATOR CONSTRUCTION AND EXTERNAL DRAINAGE WORKS: (Sub Total 9+Sub Total 10+ Sub Totals 11).
G EXTENSION OF POST NATAL UNIT; INCLUDING EXTERNAL DRAIANGE WORKS :(Sub Total 11+Sub Total 13 + Subtotal 14)
H EXTENSION OF DOT/LABORATORY ROOM:(Sub Total 15+Subtotal 16)
I TOTALS CARRIED TO GRAND SUMMARY
pg. 160
ANNEX 1: The Programme Participant Protection Policy & Code of Conduct
1. ………………………………………. 9confirms that he/she has read and understands the terms of Concern Programme Participant Protection Policy and Code of Conduct and agrees to abide by the terms of this policy at all times in all of their activities under this agreement. ……………………………………………..10Shall ensure that its employees, officers, sub-contractors and agents shall abide by the terms of this policy at all times. 2. ………………………………………. 11shall bear responsibility and be liable in respect of any and all claims, losses, damages, liabilities and expenses of any nature howsoever arising from or in connection with any breach of Concern Programme Participant Protection Policy and Code of Conduct by ……………………………………………….12or by its employees, officers, sub-contractors or agents.………………………………………………13shall indemnify and hold harmless Concern, its officers, employees and agents, in respect of any and all such claims, losses, damages, liabilities and expenses arising from or in connection with any such breach.
A copy of the P4 and Concern Code of Conduct is attached to this contract agreement as annex 1 contracts.
9 The contractors/company name should be inserted in the provided blank space10 The contractor/company’s name should be inserted in the provided blank space.11 The contractor/company’s name should be inserted in the provided blank space.12 The contractor/company’s name should be inserted in the provided blank space.13 The contractor/company’s name should be inserted in the provided blank space.
pg. 161
pg. 162
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