Standard Specifications for Building Works and Other Installations - 2012

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(1)STANDARD SPECIFICATIONS FOR. BUILDING WORKS. AND. OTHER INSTALLATIONS. (2012 EDITION).

(2) Published by Housing and Development Board, Republic of Singapore. No part of this document may be reproduced or copied in any form or by any means without the prior permission of the publisher..

(3) STANDARD SPECIFICATIONS FOR BUILDING WORKS AND OTHER INSTALLATIONS. CONTENTS Page. SECTION 1. GENERAL SPECIFICATIONS. 1-1. TECHNICAL SPECIFICATIONS SECTION 2. PILING. 2-1. SECTION 3. EXCAVATION. 3-1. SECTION 4. STRUCTURAL CONCRETE. 4-1. SECTION 5. METAL FORMWORK. 5-1. SECTION 6. SEMI-PRECAST CONSTRUCTION. 6-1. SECTION 7. PRESTRESSED CONCRETE. 7-1. SECTION 8. HOUSEHOLD SHELTER. 8-1. SECTION 9. REINFORCED CONCRETE WATER TANK. 9-1. SECTION 10. PRECAST LIGHTWEIGHT CONCRETE PARTITION. 10-1. SECTION 11. NON-STRUCTURAL CONCRETE. 11-1. SECTION 12. BRICKWORK AND BLOCKWORK. 12-1. SECTION 13. ROOFING. 13-1. SECTION 14. CONCRETE FLAT ROOF. 14-1. SECTION 15. CARPENTRY AND JOINERY. 15-1. SECTION 16. IRONMONGERY. 16-1. SECTION 17. STRUCTURAL STEELWORK. 17-1. SECTION 18. METALWORK. 18-1. SECTION 19. FLOOR FINISHES. 19-1. SECTION 20. WALL FINISHES. 20-1. SECTION 21. ELECTRICAL, TELEPHONE AND BROADBAND COAXIAL CABLING INSTALLATIONS. 21-1. SECTION 22. GLAZING. 22-1. SECTION 23. PAINTING AND DECORATING. 23-1. The contents of this index on this page shall not be deemed to be part of the Specifications or be taken into consideration in the interpretation or construction thereof or of the Contract. HDB, being a ISO 14001 certified organisation, is committed to be the leader in environment management. The details of HDB's environmental policy can be found in the Corporate Philosophy at HDB Website http://www.hdb.gov.sg.

(4) STANDARD SPECIFICATIONS FOR BUILDING WORKS AND OTHER INSTALLATIONS. CONTENTS Page. SECTION 24. UNDERGROUND PIPE SYSTEM FOR LOW TENSION RETICULATION CABLE, TELECOMMUNICATION AND BROADBAND COAXIAL CABLE. 24-1. SECTION 25. CHILDREN'S PLAYGROUND, FITNESS STATION AND HARDCOURT. 25-1. SECTION 26. TREE PLANTING AND TURFING. 26-1. SECTION 27. MULTI-STOREY CARPARK. 27-1. SECTION 28. ELECTRICAL SUB-STATION / UTILITIES CENTRE / DUSTBIN COMPOUND. 28-1. SECTION 29. EATING HOUSE. 29-1. SECTION 30. MISCELLANEOUS (BUILDING). 30-1. SECTION 31. FABRICATION AND PROVISION OF REFUSE BINS, LITTER BINS, BULK CONTAINERS AND TROLLEYS. 31-1. SECTION 32. RESERVED. 32-1. SECTION 33. RESERVED. 32-1. SECTION 34. RESERVED. 32-1. SECTION 35. RESERVED. 32-1. SECTION 36. GENERAL REQUIREMENTS FOR SANITARY, WATER, GAS AND OTHER PLUMBING INSTALLATIONS. 36-1. SECTION 37. SANITARY INSTALLATION. 37-1. SECTION 38. WATER INSTALLATION. 38-1. SECTION 39. GAS PIPE INSTALLATION. 39-1. SECTION 40. EATING ESTABLISHMENT, MARKET FACILITIES, RETAIL AND SERVICES FACILITIES. 40-1. SECTION 41. MISCELLANEOUS (SANITARY & WATER INSTALLATION). 41-1. SECTION 42. TRANSFER PUMPING SYSTEM AND TELEMONITORING SYSTEM INSTALLATION. 42-1. SECTION 43. BOOSTER PUMPING SYSTEM INSTALLATION. 43-1. SECTION 44. DRY/WET RISING MAIN INSTALLATION. 44-1. SECTION 45. FIRE PROTECTION INSTALLATION. 45-1. SECTION 46. RESERVED. 46-1. The contents of this index on this page shall not be deemed to be part of the Specifications or be taken into consideration in the interpretation or construction thereof or of the Contract..

(5) STANDARD SPECIFICATIONS FOR BUILDING WORKS AND OTHER INSTALLATIONS. CONTENTS Page. SECTION 47. RESERVED. 46-1. SECTION 48. RESERVED. 46-1. SECTION 49. GENERAL REQUIREMENTS FOR ELECTRICAL WORKS. 49-1. SECTION 50. SWITCHBOARDS, DISTRIBUTION BOARDS AND SWITCHGEARS. 50-1. SECTION 51. MAINS AND SUB-MAINS CABLES. 51-1. SECTION 52. CABLES SUPPORTING SYSTEMS. 52-1. SECTION 53. ELECTRICAL ACCESSORIES AND FIXTURES. 53-1. SECTION 54. LUMINARIES. 54-1. SECTION 55. EARTHING SYSTEM. 55-1. SECTION 56. LIGHTNING PROTECTION. 56-1. SECTION 57. PUBLIC LIGHTING. 57-1. SECTION 58. ELECTRICAL INSTALLATION OF DWELLING UNITS AND PREMISES. 58-1. SECTION 59. ELECTRICAL INSTALLATION TO MULTI-STOREY CARPARKS (MSCP), GARAGES AND PLANT ROOMS. 59-1. SECTION 60. OUTDOOR AMENITIES LIGHTING. 60-1. SECTION 61. TELEVISION (TV) SYSTEM INSTALLATION. 61-1. SECTION 62. TELEPHONE CABLING. 62-1. SECTION 63. FIRE ALARM SYSTEM. 63-1. SECTION 64. VENTILATION SYSTEM. 64-1. SECTION 65. FANS FOR GENERAL VENTILATION. 65-1. SECTION 66. REFUSE HANDLING PLANT INSTALLATION. 66-1. SECTION 67. RESERVED. 67-1. SECTION 68. RESERVED. 68-1. SECTION 69. RESERVED. 69-1. SECTION 70. LISTS OF APPENDICES. 70-1. The contents on this page shall not be deemed to be part of the Specifications or be taken into consideration in the interpretation or construction thereof or of the Contract..

(6) SECTION 1 : GENERAL SPECIFICATIONS CONTENTS Page 1.1 1.1.1 1.1.2 1.1.3 1.1.4 1.1.5 1.1.6 1.1.7 1.1.8 1.1.9 1.1.10 1.1.11 1.1.12 1.1.13 1.1.14 1.1.15 1.1.16 1.1.17 1.1.18 1.1.19 1.1.20 1.1.21 1.1.22 1.1.23 1.1.24 1.1.25 1.1.26 1.1.27 1.1.28 1.1.29 1.1.30 1.1.31 1.1.32 1.1.33 1.1.34 1.1.35 1.1.36 1.1.37 1.1.38 1.1.39 1.1.40 1.1.41 1.1.42 1.1.43 1.1.44 1.1.45 1.1.46 1.1.47 1.1.48 1.1.49 1.1.50 1.1.51. GENERAL Definitions, Abbreviations And Interpretations Reserved Payment Of Employer's Bills Expenses, Etc Contract Payment By GIRO/EPS Diversion of Services Stamp Duties TOL Fee For Land Outside Contract Boundary Liquidated Damages For Delay In Completion Provisional Sum Items Prime Cost Sums Overclaim Leading To Overpayment Carriage By Sea Existing Ground / Road Levels Raising Or Lowering Of Existing Sewer Manholes And Other Services Manholes Work Method And Trade Demonstration Reserved Site Layout Plan Site Offices And Canteens Provision Of Equipment, Apparatus Devices, Etc Reserved Provision Of Transport Provision Of Temporary Site Facilities/Utilities Protective Roof For Temporary Site Structures Construction Site Main Signboard and Hoarding Signage Site Management Employment of Contractor's Site Personnel Contractor's Work In Connection With Subsidiary Contracts Cables/Services Detection Reserved Damage To Public/Private Property General Housekeeping Reserved Time Required For Contractor For Preparation Of Handing Over Inspection Restriction On Use Of Project Information For Publicity, Etc Provision Of Respiratory Masks Reserved Reserved Research Work Earlier Completion Of MDF Rooms, Consumer Switch Rooms, Pump Rooms And Lift Wells Including Machine Rooms Handing Over Of Completed Works And Certification Of Substantial Completion Reserved Management Of Defects Rectification Precautionary Measures To Be Taken During A Disease Pandemic Works Within Railway Protection Zone And Railway Safety Zone Recovery Of Legal Costs For Court Proceedings Novation, Assignment And Direct Submission Of Warranties And Agreements Completion Of Site Works Erection Of Temporary Buildings Goods And Services Tax Works And Materials Warranty Cost Of Water And Electricity. 1-1 1-3 1-3 1-3 1-4 1-4 1-4 1-4 1-5 1-5 1-5 1-6 1-6 1-6 1-6 1-7 1-7 1-7 1-10 1-13 1-13 1-13 1-15 1-16 1-17 1-17 1-24 1-24 1-24 1-24 1-25 1-25 1-25 1-25 1-26 1-26 1-26 1-26 1-26 1-28 1-29 1-29 1-31 1-31 1-31 1-32 1-32 1-32 1-33 1-33 1-33. The contents on this page shall not be deemed to be part of the Specifications or be taken into consideration in the interpretation or construction thereof or of the Contract..

(7) SECTION 1 : GENERAL SPECIFICATIONS CONTENTS Page 1.1 1.1.52 1.1.53 1.1.54 1.1.55 1.1.56 1.1.57 1.1.58 1.1.59 1.1.60 1.1.61 1.1.62 1.1.63 1.1.64 1.1.65 1.1.66 1.1.67 1.1.68 1.1.69 1.1.70. GENERAL (CONT'D) Site Control And Security Assessment Of Extension Of Time Due To Exceptionally Inclement Weather Shortfall In Floor Area Registered Trade Subcontractors And M&E Subcontractors Insurance Policies Contract Documents And Reference Material On Site Provision Of Building Service Centre Reserved Lightning Protection To Temporary Structures And Metal Structures Computer Hardware And Software Electronic Submission For Progress Payments Claims And Request For Variation Works Assignment Of Copyright Of Photographs, Etc Provision Of Keys Envelopes During Handover Scheduling Of PE Submission Earth Control Measures Environmental Public Health Measures At Construction Sites Material Samples Display Room Audit of M & E Systems Environmental Management. 1-34 1-35 1-36 1-36 1-37 1-39 1-40 1-40 1-41 1-41 1-45 1-47 1-47 1-48 1-49 1-51 1-58 1-58 1-59. 1.2 1.2.1 1.2.2 1.2.3 1.2.4 1.2.5 1.2.6 1.2.7 1.2.8 1.2.9 1.2.10 1.2.11 1.2.12 1.2.13. MATERIALS Metric Components Materials And Workmanship Credit Terms And Conditions For Employer's Materials Reserved Approval Of Samples And Trade Names Sample Unit And Quality Standards PSB Quality Certificate Storage Facility For Cement Precautions Against Materials Being Taken Out Of Site Ready-Mixed Concrete From Approved Suppliers Water Supply Of Concreting Materials Aggregates For Non-Concreting Works. 1-60 1-60 1-60 1-60 1-61 1-62 1-65 1-65 1-65 1-65 1-65 1-66 1-67. 1.3 1.3.1 1.3.2 1.3.3 1.3.4 1.3.5 1.3.6. LABOUR Labour Laws Keeping Records Of Workmen Employment Of Illegal Immigrants (Prohibition) Reserved Allocation Of Man-Year Entitlements Employment Of Skilled Tilers. 1-68 1-68 1-68 1-68 1-68 1-69. 1.4 1.4.1 1.4.2 1.4.3 1.4.4 1.4.5. CONSTRUCTION EQUIPMENT Provision Of Construction Equipment Technical Specification Recovery For Non-Provision Maintenance Approved Construction Equipment. 1-69 1-69 1-71 1-72 1-74. 1.5 1.5.1 1.5.2 1.5.3. SAFETY Site Safety Measures Safety Infringement Reporting Of Accidents And Dangerous Occurrence. 1-75 1-85 1-85. 1.6. NUISANCE AND IRREGULARITIES. 1-86. 1.7. SPECIAL CONDITIONS ON SURVEY WORKS. 1-86. 1.8. CONTRACTOR TO VISIT SITE OF WORK. 1-88. The contents on this page shall not be deemed to be part of the Specifications or be taken into consideration in the interpretation or construction thereof or of the Contract..

(8) GENERAL SPECIFICATIONS.

(9) Bldg Spec Page 1-1 SECTION 1 GENERAL SPECIFICATIONS 1.1. GENERAL. 1.1.1. Definitions, Abbreviations And Interpretations In the Specifications, the following words and expressions shall have the meanings hereby assigned to them except where the context otherwise requires : "SO Rep". shall mean the Superintending Officer's Representative.. "as approved". shall mean as approved by the Superintending Officer's Representative.. "as directed". shall mean as directed by the Superintending Officer's Representative.. "or other approved". shall mean as approved by the Superintending Officer's Representative and as further defined in subclause 1.2.5 "Approval Of Samples And Trade Names" of the General Specifications.. "as required" or "as shown" or "as indicated" or "as specified". shall mean as required or as shown or as indicated or as specified in the Drawings and/or Specifications.. The following abbreviations are used in the Specifications : ABGSM AC or ac AISI Amp or amp AMCA ANSI AS ASTM BCA BS cm cm² or cm2 cm³ or cm3 CPF CP dB DC or dc DIN DU or du EIA EMA MEWR EPR FSSD GS or gs g HDB HRC HVAC Hz IDA IEC IECEE IP ISO ITE JIS KA or kA. BLDG12/S01.DOC(1) Sal(151211) (DPD). = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =. Association of British Generating Set Manufacturers alternating current American Iron & Steel Institute Ampere Air Movement and Control Association American National Standard Institute Australian Standard American Society for Testing and Material Building And Construction Authority British Standard centimetre square centimetre cubic centimetre Central Provident Fund Board Code of Practice decibel direct current Deutche Industrie - Normen dwelling units Electronic Industry Association Energy Market Authority Ministry of the Environment and Water Resources Ethylene Propylene Rubber Fire Safety and Shelter Department Galvanised Steel gram Housing & Development Board High Rupturing Capacity Heating Ventilation Air-Conditioning Hertz Info-Communications Development Authority of Singapore International Electrotechnical Commission IEC System for Conformity Testing and Certification of Electrical Equipment Index of Protection International Organization for Standardization Institute of Technical Education Japanese Industrial Standard Kilo Ampere.

(10) Bldg Spec Page 1-2 1.1.1. Definitions, Abbreviations And Interpretations (Cont'd) kg KN or kN kPa or KPa KV or kV kW or KW Kwh or kWh LEW MCB MCCB MSSL MW m Max or max Min or min ml mm mV m² or m2 mm² or mm2 m³ or m3 mm³ or mm3 MHz MOM MRT MS or ms N NEA No. or no. Pa ONORM PBTS PE. = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =. PLS PowerGrid or Grid PSB PTL PUB PVC or pvc RC or rc RCCB rms SAC SCV SINGLAS SMRT SPSL SS SWA SWG SingTel TIA UHF UL m uPVC or UPVC V V VHF v/v W w/w. = = = = = = = = = = == = = = = = = = = = = = = = = = = =. BLDG12/S01.DOC(2) Sal(151211) (DPD). kilogram kilonewton kilopascal kilovolt kilowatt Kilowatt hour Licensed Electrical Worker Miniature Circuit Breaker Moulded Case Circuit Breaker Market Support Services Licensee Megawatt metre maximum minimum millilitre millimetre millivolt square metre square millimetre cubic metre cubic millimetre Megahertz Ministry of Manpower Mass Rapid Transit mild steel newton National Environment Agency number pascal Osterreichisches Normangsinstitut (Austrian Standard) Public Basic Telecommunications Service Operators Professional Engineer registered under the Professional Engineers Board, Singapore Product Listing Scheme PowerGrid Ltd TUV SUD PSB Pte Ltd Public Telecommunication Licensees Public Utilities Board Polyvinylchloride Reinforced Concrete Residual Current Circuit Breaker root mean square Singapore Accreditation Council StarHub Cable Vision Pte Ltd Singapore Laboratory Accreditation Scheme Singapore MRT Ltd SP Services Ltd Singapore Standard Steel wire armoured Standard Wire Gauge (British) Singapore Telecommunications Ltd Telecommunications Industry Association Ultra High Frequency Underwriters Laboratories Inc micrometre Unplasticised Polyvinylchloride microvolt Volt Very High Frequency measured by volume watt measured by weight.

(11) Bldg Spec Page 1-3 1.1.1. Definitions, Abbreviations And Interpretations (Cont'd) XLPE ºC % ± ≤ or < ≥ or > < >. = = = = = = = =. Cross linked polyethylene degree Celsius percent plus or minus less than or equal to greater than or equal to is less than is greater than. Words importing the singular shall also include the plural and vice versa where the context requires. The clause or subclause headings in the Specifications shall not be deemed to be part thereof or be taken into consideration in the interpretation or construction thereof or of the Contract. All clauses including all subclauses under them in the Specifications shall be deemed to be directed at the Contractor unless expressly specified otherwise to the contrary and the Contractor shall perform and/or comply with such instructions, directions, requirements and obligations specified in the Specifications and required under the Contract. All Acts of Parliament, statutes, regulations, bye-laws, orders, local and foreign standards and codes of practice specified shall be deemed to refer to the latest and shall be deemed to include any amendments, and/or modifications and/or additions and/or re-enactments thereto. 1.1.2. Reserved. 1.1.3. Payment Of Employer's Bills, Expenses, Etc The Contractor shall duly and punctually pay to the Employer the billed and any other expenses incurred by the Employer in respect of the supply of materials, services, etc. The Contractor shall also pay to the Employer interest at the rate of seven percent per annum (7% p.a.) or such other rate as may be determined from time to time by the Employer in respect of any arrears of payment or other outstanding sums due and payable to the Employer, from the due dates until payment in full is received by the Employer. The Employer reserves the right to set off such bills and expenses against monies due or becoming due to the Contractor before payment of the balance, if any, to the Contractor. In this respect, all Employer's bills and other expenses due from the Contractor shall have priority over debts due to third parties.. 1.1.4. Contract Payment By GIRO/EPS All payments under the Contract by the Employer to the Contractor shall be effected through the Interbank GIRO System and/or other Electronic Payment Systems. The Contractor shall submit all the necessary forms, such as Inter-bank GIRO (IBG) form, etc., duly completed and signed, to the Finance Department, HDB, HDB Hub, 480 Lorong 6 Toa Payoh, Singapore 310480; within fourteen days from the date of the Letter of Acceptance to effect payments through such Systems. In the event the payment arrangement through such Systems terminates for whatever reasons, the Contractor shall re-submit all the necessary forms to the Finance Department within 14 days from the date of the termination. The preceding requirements shall not be applicable to payments by the Employer to the Contractor in approved foreign currencies, where required under the Contract. Under such a case, the provisions under the clause "Tenders In Approved Foreign Currencies" including all subclauses under it shall apply.. BLDG12/S01.DOC(3) Sal(151211) (DPD).

(12) Bldg Spec Page 1-4 1.1.5. Diversion of Services Where in the case the SO Rep is of the opinion that it becomes essential to divert permanently any sewer, drain, pipe, cable, or other services, the cost for the diversion shall be borne by the Employer. Provided always that such diversion does not form part of the Works.. 1.1.6. Stamp Duties The Contractor shall have all documents required by or arising out of or in connection with this Contract properly stamped to comply with the Stamp Duties Act. The cost and expense arising out of this obligation, including all stamp duties required, shall be borne by the Contractor and shall be deemed to have been allowed for in the Contract Sum.. 1.1.7. TOL Fee For Land Outside Contract Boundary Where the Contractor requires land outside the contract boundary for the setting up of Construction Equipment and other temporary facilities for the Works, the Contractor shall check on the availability of such land and apply to the relevant Authority or Lands Management Section of HDB for the use of such land. In the event the relevant Authority or HDB's Lands Administration Section allows the Contractor the use of such land, the Contractor shall at his own cost and expense comply with all the terms and conditions, pay all TOL (Temporary Occupation Licence) fees, bear all costs and expenses for the use and maintenance of and access to the said land imposed by the relevant Authority or HDB's Lands Management Section. Such land allocated shall solely be used for the purpose of executing Works under the Contract only. Any payment for unused materials or goods stored at such land shall be subject to the provisions in Option Module B "Unused Materials or Goods not Delivered to Site" of the Conditions.. 1.1.8. Liquidated Damages For Delay In Completion In the event of re-arrangement of the completion of the Works into separate phases or sub-phases, the rate of liquidated damages in respect of each phase or sub-phase of the Works shall be recomputed according to the following rates and pro-rated against the original amount specified in the Appendix To Public Sector Standard Conditions Of Contract For Construction Works. $ per unit per day per unit per day per unit per day per unit per day per unit per day per unit per day per unit per day per unit per day per no. per day per 1,000 m² of total area within the contract boundary per day 5.00 per lot per day 1.50 per lot per day. Rental Flat (30m²) Rental Flat (40m²) Studio Apartments (35m²) Studio Apartments (45m²) 2-Room Flat 3-Room Flat 4-Room Flat 5-Room Flat Electrical Substation Link Building/Linkway/ Siteworks/Landscaping works Carpark Lot Motorcycle Lot Shop Market Foodcourt/Fastfood/ Coffee House/Restaurant/ Eating House/Kiosk/ Offices/Chidcare Centre/ Various Centres. 15.00 20.00 15.00 20.00 20.00 25.00 35.00 40.00 1,800.00 40.00. ) ) ) ) ) ) ). Civil Engineering Works. ) ). BLDG12/S01.DOC(4) Sal(151211) (DPD). 1.00 per m² of internal floor area per day. 500.00 per phase per day (for Contract Sum less than or equal to $2 million) 35.00 per phase per day (for every subsequent $100,000.00 exceeding $2 million).

(13) Bldg Spec Page 1-5 1.1.8. Liquidated Damages For Delay In Completion (Cont'd) For the purpose of this clause, the internal floor area shall be defined as the total floor area in the commercial unit/centre including the floor area occupied by toilet, store, kitchen, staircase, etc within the commercial unit/centre. The internal floor area shall be measured as follows : (a). Partition Wall/Column For partition wall/column, to measure up to the centre line of partition wall (party wall) which separates 2 adjoining units.. (b). External Wall And Party Wall Along Corridor For external wall and party wall along the corridor, to measure up to the external face of the wall surrounding the floor slab.. 1.1.9. Provisional Sum Items Where Provisional Sum Items are included in the Contract, they shall be inclusive of all costs necessary in carrying out or supplying the work, materials or goods. These Provisional Sum Items shall be inclusive of the Contractor's profit and overheads but shall be net of trade and cash discounts.. 1.1.10. Prime Cost Sums Where Prime Cost Sums (hereinafter referred to as P.C. Sum for the purposes of this subclause) are provided for any work, materials or goods, these sums shall be inclusive of carriage but exclusive of Contractor's profit and attendance. These P.C. Sum shall also be net of trade and cash discounts. The Contractor shall allow and separately price for profit and attendance in respect of such P.C. Sum in the Form of Tender. P.C. Sum shall be deducted from the Contract Sum and in lieu thereof shall be added the sums due to the Contractor for the said work, materials or goods. The sum allowed by the Contractor in the Contract for attendance in respect of any P.C. Sum shall be fixed regardless of whether the actual sum expended is greater or lesser than the P.C. Sum. In respect of profit, the amount to be paid shall be the percentage quoted by the Contractor against the actual sum expended in relation to the P.C. Sum. Should the work, materials or goods for which a P.C. Sum is provided in the Contract be not required, or if the Employer chooses to carry out or supply the aforesaid work, materials or goods by his own workmen or by other contractors, which the Employer is contractually entitled so to choose, then such P.C. Sum together with the profit and attendance allowed by the Contractor in the Contract shall be deducted in full from the Contract Sum. Should the Contractor himself be engaged or instructed to carry out or supply any work, materials or goods under a P.C. Sum, the profit and attendance allowed by the Contractor in the Contract in respect of the P.C. Sum shall be deducted in full from the Contract Sum. In such event, the amount to be paid to the Contractor for the work, materials or goods shall be inclusive of the Contractor's overheads and profit for the work, materials and goods.. 1.1.11. Overclaim Leading To Overpayment If at any time during the Time for Completion and any time period where liquidated damages are imposed under the Contract, the Contractor is found to have over-claimed and was paid for more than the value of the Permanent Works carried out and/or approved unfixed materials at the Site, the SO Rep shall be empowered to deduct from the Contractor's subsequent payments the sum overpaid together with the Employer's charge, and interest calculated at seven percent per annum (7% p.a.).. BLDG12/S01.DOC(5) Sal(151211) (DPD).

(14) Bldg Spec Page 1-6 1.1.12. Carriage By Sea The Contractor shall ensure that the carriage by sea of all goods, materials, Plant and equipment imported for the purposes of this Contract shall be on vessels owned and operated by shipping lines which are approved lines at the time the contract of carriage is entered into. Other ships may be used only if no approved line : (a). can deliver the goods, materials, Plant and equipment in time to meet the delivery dates specified in the Contract; or. (b). can provide the same measure of service at the same cost.. The Bills of Lading for the goods, materials or Plant and equipment used by an approved line(s) shall be sufficient evidence of their carriage by an approved line(s) in compliance with this subclause. Where the carrier is not an approved line, the Contractor shall satisfy the SO Rep that the conditions herein stated have been satisfied. The SO Rep may require and the Contractor shall forthwith furnish to the SO Rep a letter from at least one approved line at the time the contract of carriage with the carrier is entered into stating that in respect of the shipment in issue they are either unable to quote or to provide the service required. Notwithstanding anything contained in this subclause, the Employer shall not be responsible for any act or default of the carrier or for any loss or damage sustained by the Contractor on account of him having to comply with this subclause. The list of current approved lines can be obtained from the Procurement Office, Development And Procurement Department, HDB, Basement 1, HDB Hub, 480 Lorong 6 Toa Payoh, Singapore 310480. 1.1.13. Existing Ground / Road Levels The existing ground/ road levels/ drain invert levels as shown in the drawings are approximate. The Contractor shall note that existing ground/road levels and drain invert levels may not necessarily be the same as shown in the drawings. He is to ascertain this and visits the Site prior to the tender and is deemed to include whatever extra cost of cut and fill in the Contract Sum. In the event of the Contractor failing to visit the Site, the tender shall be deemed to have been submitted with his satisfaction of the actual levels on Site and other related ground conditions. The Contractor is deemed to have made necessary provision in the Contract Sum to cater for additional earthwork arising from the difference in levels found on Site and that shown in the drawings and no claims or compensation shall be entertained.. 1.1.14. Raising Or Lowering Of Existing Sewer Manholes And Other Services Manholes The Contractor shall include in his Contract Sum the cost of raising or lowering of existing sewer manholes and other services manholes / chambers, and their related works within the contract boundary to suit and match the proposed driveways and platform levels.. 1.1.15. Work Method And Trade Demonstration The Contractor shall submit to the SO Rep for his approval the work methods of various trades as required by the SO Rep to ensure good in-process quality control and reasonably acceptable final workmanship. A marking system, where applicable, showing inter alia, the control, grid and level reference lines shall be included in the work methods. The Contractor shall also ensure that sub-contractors engaged for each trade shall also comply with the work methods approved by the SO Rep. As instructed by the SO Rep, the Contractor shall conduct trade demonstration for all critical work methods as approved prior to full scale production in the contract.. BLDG12/S01.DOC(6) Sal(151211) (DPD).

(15) Bldg Spec Page 1-7 1.1.15. Work Method And Trade Demonstration. (Cont’d). Should it appear to the SO Rep at any time that the work methods proposed by the Contractor will not ensure good workmanship in the Works, the SO Rep may require the Contractor to make at his own cost and expense such modifications to the original work methods as the SO Rep may consider necessary or appropriate. The Contractor shall employ only skilled workers who are capable of executing the Works in accordance with the work methods approved by the SO Rep. When there is a change in subcontractors, the SO Rep may instruct the Contractor to re-conduct the relevant trade demonstration if deem necessary. Approval by the SO Rep of the Contractor’s work methods, revised work methods or any details and information provided under this subclause shall not in any way relieve the Contractor’s liabilities or obligations under the Contract. 1.1.16. Reserved. 1.1.17. Site Layout Plan After the Contract is awarded, submit a site layout plan to the SO Rep indicating proposed locations of all temporary structures (for example site offices, workers' quarters, canteens, stores, hoistways, Construction Equipment and labour lines) for approval before their erection. Notwithstanding such approval, the Contractor shall relocate any such structures at his own cost and expense when required to do so by the SO Rep. All such materials and structures shall be kept away from proposed roads, driveways, car parks and services lines. Should any hoistway or structure be erected without the approval of the SO Rep, the Contractor shall pull down and re-erect the hoistway or structure in an approved position within seven days from the date of instruction by the SO Rep. The Contractor shall provide for the maintenance of all such structures in a clean, hygienic and safe condition for the duration of the Works. All such structures and hoistways shall be removed on Substantial Completion of the Works.. 1.1.18. Site Offices And Canteen. 1.1.18.1. Within 21 days from the date of taking possession of the Site, the Contractor shall erect site offices and a site canteen complying with the requirements of the MEWR and shall remove them on Substantial Completion of the Works or at a time approved by the SO Rep. The Employer's Standard Drawings may be used as a guide in designing the site offices and canteen. Submit proposals for the design (inclusive of PE calculations), configuration and layout for the approval of the SO Rep taking full consideration the site constraints and conditions. Locating the site offices and canteen at the first storey void areas shall only be considered under special circumstances and subject to the approval of the SO Rep. Should approval be given to set up the site offices and canteen at the first storey void areas, ensure and make all provisions necessary to protect the structures and finishes. When such void areas are required by the Employer for other purposes, remove and re-erect the site offices and canteen at alternative locations all at the Contractor's own cost and expense. No claim whatsoever shall be entertained in such event.. BLDG12/S01.DOC(7) Sal(151211) (DPD).

(16) Bldg Spec Page 1-8 1.1.18. Site Offices And Canteen. 1.1.18.2. Site Offices. (Cont’d). The following rooms shall have at least the minimum stipulated areas and complete with basic facilities, fittings and furniture and made available at all times for use by the SO Rep and the Employer's officers : Facilities, Furnitures and Fittings. S/N. 1.. Room (Minimum size & able to accommodate all facilities specified). 2.. Tables and Chairs :. 24 m. 2. Computer Room. 24 m2. 34 m2. 8 m2. a) 1.5m x 0.8m office table complete with at least 3 drawers. 4. 4. -. -. b) 1.5m x 0.8m working table complete with storage space for drawings. -. Maximum 2. -. -. c). 0.8m wide side tables for computer and its peripherals. -. -. -. 1. d). 1.2m x 0.8m table. -. -. 6. -. e). Chairs with hand rests. 4. 4. -. -. f). Chairs without hand rests. 4. 2. 15. 2. g). High Chairs without hand rests (for working table). -. Maximum 2. 5. -. 3. Steel Cabinet complete with Shelves and Double-Leaf Doors with lock. 1. Maximum 3. -. -. 4. Soft Board complete with Accessories. 1. 1. 2. 1. 5. White Board complete with Accessories. 1. 1. 1. -. 6. Key cabinet. -. 1. -. -. 7. Air-Conditioner of Minimum 10,000 BTU Output. 2. 2. 2. 1. 8. Telephone Installation a) Separate telephone line. 1. 1. -. 1. b) Telephone set. 1. 1. -. 1. Drawing Rack complete with Drawing Holders. -. 2. -. -. 9. BLDG12/S01.DOC(8) Sal(151211) (DPD). SO Rep Room. No. of Items Resident Meeting Technical Officer Room Room.

(17) Bldg Spec Page 1-9 1.1.18. Site Offices And Canteen. 1.1.18.2. Site Offices. (Cont’d) Facilities, Furnitures and Fittings. S/N 10. (Cont’d). SO Rep Room. No. of Items Resident Meeting Technical Officer Room Room. Computer Room. Electrical Installation, Connections and Accessories (The illumination level in the meeting room and the SO Rep room shall be set at 300 to 400 lux) a) 40W Fluorescent lighting. 4. 4. 4. 2. b) 13 Ampere socket outlet. 2. 2. 2. 3. c) 15 Ampere socket outlet. 2. 2. 2. 1. The doors leading to the SO Rep room, the Resident Technical Officer room and the meeting room shall be provided with locksets and all the keys to the locksets shall be given to the SO Rep. 1.1.18.3. Site Canteen The structure of the site canteen shall be a steel column-roof truss design, anchored to a reinforced concrete base and footings. All structural steelwork shall comply with the requirements specified in Section 17 “Structural Steelwork” including all clause and subclause under it. The Contractor shall further submit detailed structural plans and design calculations, certified by his PE to the SO Rep not later than three months from the commencement date of the Time for Completion or two weeks before the actual commencement of the Works, whichever is earlier. The Contractor shall bear all consequences for late submission. The Contractor shall erect the site canteen in strict compliance with his Professional Engineer's plans and calculations. The Works shall be supervised by the Contractor's PE. His PE is also to ensure that the site canteen is designed in compliance with the Technical Guidelines for the Fire Safety in Temporary Buildings in Construction Sites, including any amendment thereto, issued by FSSD; and the Building Control (Temporary Buildings) Regulations (2000 edition) including any latest requirements by BCD, BCA. Not later than two weeks after the completion of the Works, the Contractor's PE shall submit a Certificate of Supervision, stating that he has carried out such supervision work and is fully satisfied that the Works have been constructed in accordance with his structural plans and design calculations as approved by the SO Rep. The site canteen is to be enclosed with half-height panels. The panels are to be made of fire-rated colour-bond galvanized steel sheet complete with 42mm thick rockwool panel (sandwich concept). Solid block wall are to be installed only at the preparation and dapur areas where wall tiles are provided. All solid block wall facing the external/exposed shall be plastered and painted with at least 3 coats of algae-resistant emulsion paint. No timber or other combustible material shall be used for the site canteen. Notwithstanding the Employer’s Standard Drawings being adopted as a guide, the site canteen shall be provided with the following facilities and amenities: S/No. 1. 2. 3. 4.. BLDG12/S01.DOC(9) Sal(151211) (DPD). Facilities, Furniture and Fittings Wash basins Wash area Wall / Ceiling mounted fans Ceiling mounted lightings. Refreshment Area 1 4 4. No. of Items Preparation Area 1 1 2. Dapur Area 2.

(18) Bldg Spec Page 1-10. 1.1.18. Site Offices And Canteen. 1.1.18.3. Site Canteen. (Cont’d). (Cont’d). All canteen counter tops, dining tables and benches are to be wrapped with linoleum or other approved waterproof material. The concrete base shall also be 100mm above the surrounding level to keep the floor area dry. Adequate scupper drains graded to discharge into public sewer / septic tank are to be provided for washing purposes. Discharge into the site’s perimeter cut-off drains shall not be allowed. All roof purlins and runners are to be concealed with false ceiling made of softboard or other approved materials for aesthetic purposes. The site canteen is to be sited at a well-ventilated location, away from vehicular accesses and refuse collection areas for hygiene purposes. The location and layout of the site canteen shall be subjected to approval of the SO Rep. 1.1.18.4. The Contractor shall allow for the maintenance of the site offices and canteen and all the facilities, furniture and fittings therein in a clean, habitable and good working condition to the satisfaction of the SO Rep. The Contractor shall pay all charges for the provision and use of the telephone and electricity at the site offices and canteen.. 1.1.18.5. Should the Contractor fails to provide any of the aforementioned facilities, furniture and fittings after the commencement date of the Time for Completion, the SO Rep shall forthwith purchase and provide the same on the Contractor's behalf and all costs and expenses for such purchase and provision plus charges shall be recovered by the Employer from any monies due or becoming due to the Contractor or be recovered as a debt due by the Contractor to the Employer.. 1.1.19. Provision Of Equipment, Apparatus, Devices, Etc (A). Facsimile Machine The Contractor shall provide 1 number of plain paper (A4 size) facsimile machine at the site office. Facsimile machine of the thermal paper type shall not be acceptable. Such machine shall be kept in the Resident Technical Officer room throughout the Time for Completion and any time period where liquidated damages are imposed under the Contract. The facsimile machine shall be for the exclusive use by the SO Rep and/or Employer's officers only. The Contractor should provide another facsimile machine for their own use. The Contractor shall pay all charges, bear all costs and expenses and be responsible for the continuous proper, good and efficient working conditions and maintenance of such facsimile machine. Produce the maintenance agreement with the vendor to the SO Rep for checking when requested. The maintenance agreement shall cover the whole duration of the Time for Completion and any time period where liquidated damages are imposed under the Contract.. (B). Digital Camera On Site The Contractor shall provide a digital still camera on the Site throughout the Time for Completion and any time periods where liquidated damages are imposed under the Contract, for the purpose of photographing site occurrences (within the Site) by the SO Rep. The digital still camera shall have zooming functions and be capable of taking pictures at a digitized resolution of at least 2.1 million pixels. The digital still camera shall have an expandable and removable memory storage media with a minimum capacity of 128 Mbytes, and be provided with all the necessary softwares and accessories for editing and transferred digital images from the camera to the computer hardware. The Contractor shall bear all the costs and expenses incurred arising from usage of the digital camera and shall be responsible for its continuous and proper functioning.. (C). Torch Lights The Contractor shall provide sufficient number of torch lights on the Site at all times for use by the SO Rep, Resident Technical Officer and/or representatives from other Authorities. These torch lights shall be in good working condition and sufficiently bright enough for use.. (D). Metal Detector The Contractor shall provide a battery-operated portable metal detector for the purpose of detecting metal reinforcement embedded in cement mortar joints of brickwalls. The detector must have either a light or buzzer indicator to indicate the presence of metal.. BLDG12/S01.DOC(10) Sal(151211) (DPD).

(19) Bldg Spec Page 1-11 1.1.19. Provision Of Equipment, Apparatus, Devices, Etc (Cont'd) (E). Moisture Meter The Contractor shall provide a portable, battery operated, digital LCD display moisture meter with integral electrode pins for measuring moisture content of timber doors and frames delivered to the Site. The moisture meter shall be capable of measuring actual moisture content of wood in the range from 8% to 44% (minimum) with a 1% indicating tolerance at 0 to 40 degrees Celsius ambient temperature. The meter shall also possess a built-in device for performing simple calibration checks.. (F). Safety Helmets And Safety Boots The Contractor shall provide sufficient safety helmets and safety boots for use by the Employer's officers and visitors visiting the Site throughout the Time for Completion and any time period where liquidated damages are imposed under the Contract. The ownership of the safety helmets and safety boots shall be reverted back to the Contractor upon the satisfactory Substantial Completion of the Works. The requirements are as follows : (a). Safety Helmets (i) (ii) (iii). (b). white colour with HDB logo in front of helmet. (Colour code for HDB logo : Pantone 485) complete with canvas chin straps and sweat resisting lining. comply with SS98:1987.. Safety Boots (i) (ii) (iii) (iv) (v) (vi) (vii) (viii) (ix). at least 24 cm in height black/brown colour with steel toe cap long-wearing of great flexibility and resilience slip proof, resistant to oil, acid and heat nail proof of excellent insulation comfortable and light comply with SS105:1987. The Contractor shall immediately replace those safety helmets and safety boots which the SO Rep considers to be not in good working condition. (G). Stationery For Resident Technical Officer The Contractor shall provide stationery and other devices for site use by the Employer's officers upon commencement of the Works. The list of stationery to be provided is as follows : Item No.. BLDG12/S01.DOC(11) Sal(151211) (DPD). Description. Quantity (Maximum). 1.. Ball Point Pen (Black/Blue/Red). 2.. Correction Fluid. 2 no. each per Resident Technical Officer 1 no. per Resident Technical Officer. 3.. Eraser (Pencil). 1 no. per Resident Technical Officer. 4.. Glue Tube. 1 no. per Resident Technical Officer. 5.. Hard Cover Book : a) A4 size b) A5 size. a) b). 6.. Manila File. 25 no.. 5 each. 5 each..

(20) Bldg Spec Page 1-12 1.1.19. Provision Of Equipment, Apparatus, Devices, Etc (Cont'd) (G). Stationery For Resident Technical Officer (Cont’d) Item No. 7.. Description. Quantity (Maximum). Paper Clip : a) Medium Size b) Large Size. a) b). 8.. Pen Knife. 2 no.. 9.. Pencil (2B). 2 no. per Resident Technical Officer. 10.. Perforator. 2 no.. 11.. Pocket Notebook. 1 no. per Resident Technical Officer. 12.. Ruler (300 mm). 1 no. per Resident Technical Officer. 13.. Scissor. 2 no.. 14.. Stamp Pad (Violet). 1 no. per Resident Technical Officer. 15.. Staple Machine (B3). 1 no. per Resident Technical Officer. 16.. Staples (B3). 1 no. per Resident Technical Officer. 17.. Calculator (without scientific functions). 1 no.. 18.. Colour Pencils. 1 set. 19.. Highlighter of Assorted Colours. 1 set. 20.. Scale Ruler. 1 no.. 21.. Writing Pad (A4). 1 no. per Resident Technical Officer. 22.. Hard Cover Ring File. 40 no. plus 3 no. per building block. 23.. Ear Plugs. 1 no. per Resident Technical Officer. 24.. Rubber Stamp. Max. 5 nos per contract. 25.. Retractable tapping rod. 1 no. per Resident Technical Officer. 26.. 3.5 inch diskettes (1.44MB). 2 boxes of 10 formatted diskettes per contract. 27.. Measuring Tape of 7.5 metre Length. 1 no. per Resident Technical Officer. 28.. Laser Pointer. 1 no. per Resident Technical Officer. 29.. CD Re-write able discs. 1 box of 10 CDRW discs. 2 boxes. 2 boxes.. Should the Contractor fails to provide any of the aforementioned stationery after the commencement date of the Time for Completion, the SO Rep shall forthwith purchase and provide the same on the Contractor's behalf and all costs and expenses for such purchase and provision plus charges shall be recovered by the Employer from any monies due or becoming due to the Contractor or be recovered as a debt due by the Contractor to the Employer.. BLDG12/S01.DOC(12) Sal(151211) (DPD).

(21) Bldg Spec Page 1-13 1.1.19. Provision Of Equipment, Apparatus, Devices, Etc (Cont'd) (H). Photo Copying Machine Provide 1 number of plain paper photocopying machine at the site office with the following specifications : (i) (ii) (iii) (iv). minimum 50 ppm in black and white; Support paper up to 160gsm and A3+; Auto paper selections; Auto response sensor. The photocopying machine shall be kept in the Resident Technical Officer room throughout the Time for Completion and any time period where liquidated damages are imposed under the Contract. The photo copying machine shall be for the exclusive use by the SO Rep and/or Employer’s officers only. The Contractor should provide another photo copying machine for their own use. The Contractor shall pay all charges, bear all costs and expenses and be responsible for the maintenance of such photocopying machine. Produce the maintenance agreement with the vendor to the SO Rep for checking when requested. The maintenance agreement shall cover the whole duration of the Time for Completion and any time period where liquidated damages are imposed under the Contract. 1.1.20. Reserved. 1.1.21. Provision Of Transport The Contractor shall at his own cost and expense provide suitable transport throughout the Time for Completion and any time periods where liquidated damages are imposed under the Contract, for the SO Rep and other Employer's officers, from the nearest bus stop or MRT station or site or public carpark near to the Site, to the Site, including the return journey, for the discharge of their official duties. Such pick up point shall be decided by the SO Rep. The vehicle shall be driven by the Contractor's own personnel.. 1.1.22. Provision Of Temporary Site Facilities/Utilities. 1.1.22.1. Access Roads And Protective Crossings The Contractor shall repair and maintain all access roads serving the Site and provide temporary protective crossings over existing drains, channels, footways, etc throughout the Time for Completion and any time period where liquidated damages are imposed under the Contract. The Contractor shall be responsible for making good all damage and/or clearing away on Substantial Completion to the requirements of the relevant Authorities and to the satisfaction of the SO Rep.. 1.1.22.2. Reserved. 1.1.22.3. Temporary Electricity Supply And Installation The Contractor shall engage a Licensed Electrical Worker (LEW) of at least an ‘Electrical Technician’ Grade to design all temporary electrical installations necessary for building operations and works of engineering construction. The installations shall comply fully to the requirements as stated in the latest edition of Singapore Standard CP 88 applicable at the date of closing of the Tender. Throughout the Time for Completion and any time period where liquidated damages are imposed under the Contract, the Contractor’s LEW shall ensure good safety standards and practices and including the following : (a). BLDG12/S01.DOC(13) Sal(151211) (DPD). For re-development sites, the Contractor is strongly encouraged to use M/s PowerGrid Ltd’s power supply to provide temporary electricity supply during the construction stage. For new town development sites, all electrical generator sets shall be licensed with valid EMA licence. A minimum capacity of 75kVA generator shall be used at each block. However when the generator is used for the passenger cum material hoist and other general purposes, the minimum capacity of the generator for each block shall be upgraded to 100 kVA..

(22) Bldg Spec Page 1-14 1.1.22. Provision Of Temporary Site Facilities/Utilities (Cont’d). 1.1.22.3. Temporary Electricity Supply And Installation (Cont’d) (b). The electrical switch board which holds the ELCB shall be housed in a switch box located at least 1.5 m from the floor level.. (c). Socket-outlet assembly complete with miniature circuit breakers (MCBs) and residual current operated circuit breakers (RCCBs) is to be provided at each storey of the building block. The precast refuse chute shall serve as a temporary service riser. The installation shall last the entire Time for Completion unless authorized to be removed earlier by the SO Rep or when permanent electricity supply is secured (whichever is earlier). The temporary incoming supply cable located within the precast refuse chute shall be supported with insulated lock bands. Upon termination of the temporary electricity supply, all cables and lock bands installed in the precast refuse chute shall be removed and the surface of the precast refuse chute shall be made good to a smooth finish.. (d). All sheaths of cables, sockets outlets and plugs are in good working condition.. (e). All cables are properly bound and do not cause obstruction to passageways, walkways and stairs.. (f). All cables are properly supported with L-shaped galvanised steel brackets or insulated lock bands and placed at a suitable height, away from any source which cause mechanical damage.. (g). All plugs, socket-outlets, socket-outlet assembly (SOA), cable couplers and plug adaptors are to be of the standard industrial type and of minimum classification of latest edition CP 88.. (h). The supply to provide artificial lighting shall be taken from the socket-outlet assembly located at each storey. 4 feet fluorescent lighting enclosed in suitable mechanical enclosure to a minimum classification of IP 44 shall be used to provide lighting or to achieve a minimum lighting level of 400 lux.. (i). The Contractor shall provide sufficient temporary lighting, according to the instruction of the SO Rep, for their workers/sub-contractors to carry out in-process construction works such as internal plastering/skimming, wall and floor tiling, application of water-proofing membrane etc., within the units or common areas of the building under construction.. 1.1.22.4. Reserved. 1.1.22.5. Temporary Store Room For Lift Parts The Contractor shall provide a temporary storage space with a floor area of at least 50 m2 and another temporary store room properly secured and complete with door and latch and with a floor 2 area of at least 15 m at the ground floor of each building block where lifts are to be installed. The temporary storage space/temporary store room shall be used solely by the lift contractor for keeping lift parts during the lift installation period which shall commence from the date of handing over of the lift hoistway and lift motor room to the lift contractor. If the abovementioned temporary storage space/temporary store room need to be removed to allow the Contractor and/or other contractors to proceed with their work, the Contractor shall at its own cost and expense first provide an alternative storage space/store room and arrange with the lift contractor to vacate the original temporary storage space/temporary store room and transfer such lift parts to the alternative storage space/store room. The location and type of temporary storage space/temporary store room shall be approved by the SO Rep.. 1.1.22.6. Temporary Use Of Lift For each building block in the Works designed with lift facilities, the Contractor shall secure for the temporary use of one lift upon completion of lift testing and commissioning by the lift contractor engaged by the Employer. The Contractor shall execute an agreement with the lift contractor for the temporary usage of the lift for a period of 1 month or longer prior to the Substantial Completion of each respective building block. A copy of the executed agreement shall be given to the SO rep for record. All costs and expenses incurred in complying with the provisions of this clause shall be deemed to be included in the Contract Sum.. BLDG12/S01.DOC(14) Sal(151211) (DPD).

(23) Bldg Spec Page 1-15 1.1.22. Provision Of Temporary Site Facilities/Utilities (Cont'd). 1.1.22.6. Temporary Use Of Lift (Cont'd) The temporary use of the lift shall be subjected to the terms and conditions stipulated hereunder. Such terms and conditions shall be incorporated into the agreement to be executed between the Contractor and the lift contractor. The terms and conditions shall be as follows :. 1.1.23. (a). The Contractor shall seek the approval of the SO Rep for the use of the lifts.. (b). The Contractor shall arrange for a designated person to certify that the lifts are for temporary use and seek approval from MOM before it can be used. Alternatively the lift contractor can arrange for the inspection on behalf of the Contractor at a cost of $680.00 per lift.. (c). The Contractor shall provide proper protection such as plywood, adhesive tapes, etc. to the lift cages, floors, car doors, architraves, transoms and landing doors, etc. The Contractor shall ensure that the protection for the lifts is always in a proper condition. Any physical damage to the lifts shall be the responsibility of the Contractor.. (d). The Contractor shall engage a full-time lift attendant to operate each lift. Under no circumstance shall a lift be left unattended when it is in operation.. (e). The Contractor shall ensure that the lifts are not over loaded.. (f). The Contractor shall take up additional insurance for the use of the lifts as temporary use lifts and Public Liability coverage, naming the Employer and the lift contractor as the co-insured, for the period of usage. Copies of the insurance policies shall be given to both the SO Rep and the lift contractor before the lifts are allowed to be used. Alternately, the Contractor may pay the lift contractor for taking up the insurance and public liability coverage on its behalf.. (g). The Contractor shall be responsible for the daily maintenance of the lifts, such as cleaning up the cages and sills in order to prevent unnecessary breakdown and damage to the lifts.. (h). The lift contractor shall service the lifts once a month during normal working hours. In case of a need for emergency service, the Contractor shall contact the lift contractor direct. The Contractor shall pay the lift contractor a monthly maintenance fee of $630.00 per lift or prorated accordingly. The lift contractor may stop the use of the lifts if the maintenance fee is not paid up.. (i). Smoking is strictly prohibited in the lifts.. (j). At least three days prior to handing over each building block to the Employer, a joint inspection shall be conducted between the Contractor and the lift contractor for the purpose of handing the lift back to the lift contractor. Any damage that occur during or as a result of or arising from the temporary usage of the lift which affect the handing over of the lift to the Employer shall be the responsibility of the Contractor. All costs and expense for rectification and repair shall be borne by the Contractor, subject to verification by the SO Rep.. Protective Roof For Temporary Site Structures In addition to the requirements specified in subclause 1.1.18 (or as amended) "Site Offices and Canteens" and other clauses and subclauses on temporary structures as specified, additional protective materials for the roof shall be incorporated into the roof design of these temporary structures. The protective material shall be made of 18mm thick timber ply. For site office and workers' quarters, the timber ply shall be laid in dual double layers; with one double layer laid just beneath the metal roofing sheet and another double layer at the bottom of the steel truss system supporting the metal roofing sheet. For all other temporary structures, such as canteens, toilets, carpenter yards, etc, the protective timber roof shall be laid in single double layer beneath the roofing sheet. However, at the sole discretion of the SO Rep, such protective materials may not be necessary if the temporary structures are deemed far beyond the nearest building block under construction. Under such cases, there shall be no adjustment to the Contract Sum. The Contractor's PE shall consult with the SO Rep on these protective roofs before proceeding with the design of the temporary structures.. BLDG12/S01.DOC(15) Sal(151211) (DPD).

(24) Bldg Spec Page 1-16 1.1.24. Construction Site Main Signboard and Hoarding Signage. 1.1.24.1. The main signboard shall consist of an overall perspective of the project and is to be prominently located for maximum exposure to vehicular and pedestrian traffic. It is a separate signboard from BCA construction project data signboard. The design for the main signboard is :. 1.1.24.2. (a). Signboard Size : 4m (Width) x 5m (Height). (b). Perspective Size : 50% of signboard size (min) -. Perspective to be chosen by Consultant Supervising Architect and agreed by HDB Project Director.. -. Image printed on adhesive laminate film and mounted on 0.6mm thick aluminium sheet with 12mm thick waterproofed plywood backing. All exposed edges shall be weather protected.. -. The precinct name as approved by the Street and Building Names Board(SBNB) shall be prominently displayed and integrated with the perspective.. (c). The background colour is HDB's corporate colour Pantone 485 (100M 91Y - process colour). The red symbolises new trends and directions in Singapore's public housing.. (d). The fixing and securing of the main signboard shall be designed and endorsed by Professional Engineer. The main signboard shall be fixed with stainless steel screws of AISI Grade 304, screw driven and countersunked to form a sound fixing connection.. A pair of hoarding signage with photographs depicting HDB's Vision, shall to be located on each side of the main signboard. The design for the hoarding signage is: (a). Hoarding Signage Size: 10m (Length) x 2.4m (Height). (b). HDB Corporate image printed on adhesive laminate film and mounted on 0.6mm thick aluminium sheet with 12mm thick waterproofed plywood backing. All exposed edges shall be weather protected.. (c). The background colour is HDB's corporate colour Pantone 485 (100M 91Y - process colour). The red symbolises new trends and directions in Singapore's public housing.. (d). The fixing and securing of hoarding signage shall be designed and endorsed by Professional Engineer. The hoarding signage shall be fixed with stainless steel screws of AISI Grade 304, screw driven and countersunked to form a sound fixing connection.. 1.1.24.3. The Contractor shall submit a complete set of workshop drawings to be endorsed by his Professional Engineer and approved by the SO Rep. As and when instructed by the SO Rep, the Contractor shall remove all or part of the signboard/signage or relocate and reconstruct all or part of the signboard/signage and reinstate all the affected grounds to the satisfaction of the SO Rep all at the cost and expense of the Contractor. On satisfactory Substantial Completion of the Works, the main signboard and the hoarding signage shall be cleared away upon the approval of the SO Rep.. 1.1.24.4. Where erection of signboards with more than one language is required, all translations shall be carried out by competent translators approved by the SO Rep. All completed signboards shall be approved by the SO Rep before they are erected. The Contractor shall bear all cost and expense arising.. BLDG12/S01.DOC(16) Sal(151211) (DPD).

(25) Bldg Spec Page 1-17 1.1.25. Site Management Within 14 days from the date of the Letter of Acceptance, the Contractor shall submit to the SO Rep for his approval the following details on site planning : (a) (b) (c) (d) (e) (f). Site organizational structure; Names, roles and responsibilities of Contractor's site management, technical and supervisory staff; Manpower schedule for each trade; Schedule of heavy equipment and machineries; Measurement Plan and Survey method; Safety Management system;. Within 30 days from the date of the Letter of Acceptance, the Contractor shall submit to the SO Rep for his approval the Master Construction Programme for each building blocks and entire project. Furnish the SO Rep with such further details and information as the SO Rep may require in regard to the above items. Should it appear to the SO Rep at any time that the site planning proposed by the Contractor is not able to ensure a smooth progress and of good workmanship in the Works, the SO Rep is empowered to require the Contractor to make, at the Contractor’s own cost and expense, all necessary modifications to the plans. Approval by the SO Rep of the Contractor's site planning details, revised site planning details and further information provided under this subclause shall not in anyway affect, vary or relieve the Contractor's liabilities or obligations under the Contract. At least 14 days before the commencement of the Works by the sub-contractors or the supply of the materials by the manufacturers / suppliers, the Contractor shall submit the names of his subcontractors for the Works and the manufacturers / suppliers of the materials to the SO Rep. Where the Contractor changes his sub-contractors / suppliers, he shall also submit such information to the SO Rep 14 days prior to the commencement of the Works or supply of materials. 1.1.26. Employment Of Contractor’s Site Personnel. 1.1.26.1. Requirements For Employment Of Site Personnel Unless otherwise stated in other clauses and sub-clauses, the Contractor shall employ all the site personnel and station them full-time on the Site throughout the Time for Completion and any time period where liquidated damages are imposed under the Contract all as specified below : Number of Each Type of Personnel to be Employed Based On Contract Sum Value. S/N. 1. Type of Personnel. Project Manager. BLDG12/S01.DOC(17) Sal(151211) (DPD). Not Exceeding $10 Million. Exceeding $10 Million But Not Exceeding $25 Million. Exceeding $25 Million But Not Exceeding $50 Million. Exceeding $50 Million But Not Exceeding $75 Million. Exceeding $75 Million But Not Exceeding $100 Million. Exceeding $100 Million. One. One. One. One. One. One. Fully Agreed & Accepted Rate by the Contractor & the Employer For the Cost & Expense Deemed to be Allowed by the Contractor for the Employment of Each Personnel $8,600 per Project Manager per month.

(26) Bldg Spec Page 1-18 1.1.26. Employment Of Contractor’s Site Personnel (Cont'd). 1.1.26.1. Requirements For Employment Of Site Personnel. (Cont'd). Number of Each Type of Personnel to be Employed Based On Contract Sum Value. S/N. Type of Personnel. 2. Workplace Safety & Health Officer. 3. Not Exceeding $10 Million. Exceeding $10 Million But Not Exceeding $25 Million. Exceeding $25 Million But Not Exceeding $50 Million. Exceeding $50 Million But Not Exceeding $75 Million. Exceeding $75 Million But Not Exceeding $100 Million. Exceeding $100 Million. Fully Agreed & Accepted Rate by the Contractor & the Employer For the Cost & Expense Deemed to be Allowed by the Contractor for the Employment of Each Personnel $5,000 per Workplace Safety & Health Officer per month $4,500 per Workplace Safety & Health Coordinator per month. Nil. One. One. One. One. One. Workplace Safety & Health Coordinator. One. Nil. Nil. Nil. Nil. Nil. 4a. Site Supervisor for Architectural & Structural Works. One. Two. Three. Three. Four. Four. $4,000 per Site Supervisor per month. 4b. Site Supervisor for Mechanical & Electrical Works. One. One. One. One. One. One. $4,000 per Site Supervisor per month. 5. Horticultural* Supervisor. One. One. One. One. One. One. $2,000 per Horticultural Supervisor per Month. 6. Environmental Control Officer. 7. Security Guard. Nil. One. One. One. One. One. $2,000 per Environmental Control Officer per Month. One. One. One. One. One. One. $2,000 per Security Guard per month. * Note: The period and duration of employment of the Horticultural Supervisor shall be in accordance with sub-clause 26.1.5 and sub-clause 1.1.26.2(d) “Horticultural Supervisor”.. BLDG12/S01.DOC(18) Sal(151211) (DPD).

(27) Bldg Spec Page 1-19 1.1.26. Employment Of Contractor’s Site Personnel (Cont'd). 1.1.26.2. Qualifications/Experience/Responsibilities Of Site Personnel (a). Project Manager The Contractor's Project Manager shall be qualified, competent and possess the skill, knowledge and ability to manage and co-ordinate the project effectively. The Project Manager shall be the Contractor's Representative as required under the Contract. The Project Manager shall possess the following minimum academic qualifications and experiences:. BLDG12/S01.DOC(19) Sal(151211) (DPD). (i). For Contract Sum of $50 million and above, the candidate shall have a Degree in Architecture, Civil / Structural / Electrical / Mechanical Engineering, Building Science or Quantity Surveying with 4 years of relevant post-graduate working experience in the building construction industry or 3 years of relevant post-graduate project management experience. The degree shall be recognized either by the respective Professional Bodies, professional institutions or Building and Construction Authority.. (ii). For Contract Sum less than $50 million, the candidate shall have: (a). A degree in Architecture, Civil / Structural / Electrical / Mechanical Engineering, Building Science or Quantity Surveying with 4 years of relevant post-graduate working experience in the building construction industry or 3 years of relevant post-graduate project management experience. The degree shall be recognized by the respective Professional Bodies professional institutions or Building and Construction Authority; or. (b). A diploma in Civil / Structural / Mechanical / Electrical Engineering, Building Science, Building Management, Building Services Engineering and at least 10 years of relevant working experience in the building construction industry. The working experience should preferable be working on past HDB projects and shall be recognized by HDB as relevant working experience..

(28) Bldg Spec Page 1-20 1.1.26. Employment Of Contractor’s Site Personnel (Cont'd). 1.1.26.2. Qualifications/Experience/Responsibilities Of Site Personnel (Cont’d) (b). Workplace Safety & Health Co-ordinator/Workplace Safety & Health Officer (WSHO) The Contractor's Workplace Safety & Health Co-ordinator shall possess recognised and approved certification in construction safety to take charge of all matters related to safety. The said Workplace Safety & Health Co-ordinator shall spend their time fully performing the following : (i) (ii) (iii) (iv). To supervise safety and promote safety conduct; To inspect and rectify any unsafe place of work; To correct any unsafe practice; and To ensure that the provisions of the Workplace Safety & Health Act and its Subsidiary Legislation made thereunder are complied with.. The Contractor shall employ a full-time Workplace Safety & Health Officer to comply with the requirements under the Workplace Safety & Health Act, Workplace Safety & Health (Workplace Safety and Health Officers) Regulations. The Workplace Safety & Health Officer shall implement appropriate safety measures and ensure a safe work environment and safe work procedures in accordance with the Workplace Safety & Health Act and Subsidiary Legislation including the provisions of the Workplace Safety & Health (Construction) Regulations 2007 and the requirements specified under the Contract. (c). Site Supervisors The Contractor's Site Supervisors shall be qualified and competent and possess the relevant skills, knowledge and the ability to supervise and co-ordinate the Works; and with the following academic qualifications and experience : (i). Possess a National Certificate in Construction Supervision (NCCS) and at least 5 years of similar capacity relevant working experience in the building construction industry; or. (ii). Possess a recognised Diploma in Civil/Structural/ Mechanical/Electrical Engineering, Building Science, Building Management, Building Services Engineering and at least 3 years of relevant working experience in the building construction industry; or. (iii). Possess a Degree (foreign university) in Civil/Structural/ Mechanical/Electrical Engineering and at least 2 years of relevant working experience in the local building construction industry; or. (iv). Possess a Building Construction Safety Supervisor (BCSS) Certificate.. Notwithstanding the requirements as specified in (i) to (iv) (inclusive) above, where the Contractor is required to employ the Site Supervisor for mechanical/electrical Works, the Site Supervisor must be suitably qualified under the mechanical/electrical engineering academic qualifications and with the relevant work experiences and also received adequate safety and health training to ensure that the work which he oversees or supervises can be carried out safely. (d). Horticultural Supervisor The Horticultural Supervisor shall be competent and possesses the skill, knowledge and ability to coordinate and supervise all tree planting and landscaping works. The qualified Horticultural Supervisor shall possess the minimum Certificate of Ornamental Horticulture with a minimum of 2 years relevant experience. The appointment of Horticultural Supervisor has to be submitted to SO Rep for approval prior to the commencement of any tree planting or landscaping works. The date of appointment shall take effect from the date of SO Rep approval and shall be in full-time site-based employment by the building contractor when the physical trees planting or/and landscaping work is progressing on site till Substantial Completion of the Works.. BLDG12/S01.DOC(20) Sal(151211) (DPD).

(29) Bldg Spec Page 1-21. 1.1.26. Employment Of Contractor’s Site Personnel (Cont'd). 1.1.26.2. Qualifications/Experience/Responsibilities Of Site Personnel (Cont’d) (e). Environmental Control Officer (ECO) The Contractor shall employ Environmental Control Officer (hereinafter referred to as "ECO" for the purposes of this subclause) to comply with the Environmental Public Health Act – Environmental Public Health (Employment of Environmental Control Officers) Order 1999. The ECO shall be employed on a full-time basis where the Contract Sum is above $50 million or on a part-time basis where the Contract Sum is between $10 million and $50 million. The ECO shall be responsible for monitoring and advising the Contractor on the following main areas: (i) (ii) (iii) (iv) (v) (vi). Control of disease-bearing vectors and rodents. Proper management and disposal of solid waste. Control of noise and dust pollution. Drainage and silt control. Air and water pollution control. General housekeeping management of the project/Site.. The ECO shall conduct regular site checks and take prompt corrective actions to ensure that the workers' quarters, canteens, toilets, site offices and other facilities and general surroundings of the Site are kept clean, tidy and hygienic at all times. In addition, the ECO shall also ensure that the Site is kept mosquito-free at all times. The ECO shall compile and submit environmental related data to the SO rep upon request. This data can include: (i) (ii) (iii). Water, electricity and diesel consumption on site. Concrete wastage on site. Amount of construction debris generated on site.. The ECO shall also compile a record of on any checks by the authorities (eg. NEA for noise & vectors, PUB for ECM) and the result of such checks. This record shall also be submitted to SO rep upon request. If the Works have been certified more than 95% completed, the contractor may write to NEA’s Regional Office to seek approval to allow the ECO to perform on a part-time basis and copied to SO rep. There shall be no cost recovery from the contractor if NEA is agreeable to allow the ECO to perform on a part-time basis. (f). BLDG12/S01.DOC(21) Sal(151211) (DPD). Security Guards (i). The Contractor shall employ Security Guards from agencies that are certified/accredited to the Association of Certified Security Agencies (ACSA) or the Security Association Singapore (SAS). A listing of these certified/accredited security agencies may be obtained from the Licensing Division of the Singapore Police Force. The Contractor shall inform the SO Rep in writing on the security agency who supplied the Security Guards, within two weeks from the commencement date of the Time for Completion.. (ii). All Security Guards shall at all times be in proper uniform of their security agency with their names and identification tags on. Essential security enforcement equipment such as whistle, torchlight, walkie talkie etc shall be provided to them. They shall respond within five to ten minutes whenever they are called either through telephone or walkie talkie. They shall also have the necessary access to the telephone at the Contractor's site office during and after normal working hours for emergency reporting purpose. The Security Guards must not be armed with weapons that are disallowed by the Singapore Police Force.. (iii). A proper guard post with adequate security lighting and communication facilities shall be erected at every major entrance to the Site. All temporary gates/openings along the fencing/hoarding shall be guarded by a Security Guard during normal working hours and locked up after normal working hours.. (iv). The Security Guards shall be responsible for the general security of the Site and shall ensure that unauthorized personnel and vehicles do not entered the Site. They shall also responsible for the security of the contractor and HDB's site offices during and after normal working hours..

(30) Bldg Spec Page 1-22 1.1.26. Employment Of Contractor’s Site Personnel (Cont'd). 1.1.26.2. Qualifications/Experience/Responsibilities Of Site Personnel (Cont’d) (f). 1.1.26.3. Security Guards (Cont’d) (v). The Security Guards shall be employed to perform site security duties on a 24 hour basis. A minimum of one (1) Security Guard shall be on duty at any one shift including Sundays and public holidays throughout the Time for Completion and any time period where liquidated damages are imposed under the Contract. No Security Guard shall leave the Site until he is properly relieved by a replacement, even if his shift has ended.. (vi). A proper record of the Security Guards' attendance must be kept and made available to the SO Rep upon request.. Replacement Of Site Personnel The SO Rep shall be empowered to instruct the Contractor for a replacement at the Contractor's own costs and expenses if any of the site personnel is found not carrying his duties to the satisfaction of the SO Rep.. 1.1.26.4. Compliance With Requirements And Submission Of Information Of Site Personnel (a). The Contractor shall submit to the SO Rep within 21 days from the date of the Letter of Acceptance, the name, identity card numbers and documentary evidence of the educational qualifications and experience of all the site personnel employed by the Contractor. The employment of the site personnel shall be subject to the approval of the SO Rep.. (b). In addition, the Contractor shall comply with the requirements and keep records and submit these information to the SO Rep where required by him as specified below :. BLDG12/S01.DOC(22) Sal(151211) (DPD). (i). Except for the security guards and safety supervisors, all the site personnel employed shall be on the Contractor's monthly payroll. The Contractor shall keep records indicating the number of days the site personnel are employed for each month and the monthly contributions to CPF. Such information may be proof of employment of the site personnel.. (ii). A letter from every site personnel employed by the Contractor to testify that he is employed full-time for this Site only;. (iii). Further to (ii) above, if any site personnel is found to be working in more than one running site, the particular site personnel will be barred from working in all the Employer's sites for a period of two years from the date of the breach. It shall be the Contractor's duty to bring to the attention of the site personnel the contents of this clause..

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