HDB Specification A&A

UPG07/IND.DOC(1) lkk(181206) DPD

HOUSING & DEVELOPMENT BOARD

SINGAPORE

STANDARD SPECIFICATIONS FOR

UPGRADING WORKS

(2007 EDITION)


Published by Housing & 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 written permission of the publisher.


STANDARD SPECIFICATIONS FOR UPGRADING WORKS

INDEX PAGE SECTION 1 GENERAL SPECIFICATIONS GS 1 TECHNICAL SPECIFICATIONS SECTION 2 PILING TS 2-1 SECTION 3 RESERVED TS 3-1 SECTION 4 STRUCTURAL CONCRETE TS 4-1 SECTION 5 MECHANISED FORMWORK SYSTEM TS 5-1 SECTION 6 SEMI-PRECAST CONSTRUCTION TS 6-1 SECTION 7 PRESTRESSED CONCRETE TS 7-1 SECTION 8 FIBRE REINFORCED POLYMER (FRP) SYSTEM TS 8-1 SECTION 9 REINFORCED CONCRETE WATER TANKS TS 9-1 SECTION 10 PRECAST LIGHTWEIGHT CONCRETE PARTITIONS TS 10-1 SECTION 11 NON-STRUCTURAL CONCRETE TS 11-1 SECTION 12 BRICKWORK AND BLOCKWORK TS 12-1 SECTION 13 ROOFING TS 13-1 SECTION 14 CONCRETE FLAT ROOF TS 14-1 SECTION 15 CARPENTRY AND JOINERY TS 15-1 SECTION 16 IRONMONGERY TS 16-1 SECTION 17 STRUCTURAL STEELWORK TS 17-1 SECTION 18 METALWORK TS 18-1 SECTION 19 FLOOR FINISHES TS 19-1 SECTION 20 WALL FINISHES TS 20-1 SECTION 21 ELECTRICAL, TELEPHONE AND CATV INSTALLATIONS TS 21-1 SECTION 22 GLAZING TS 22-1 SECTION 23 PAINTING AND DECORATING TS 23-1 SECTION 24 RESERVED TS 24-1 SECTION 25 CHILDREN'S PLAYGROUND, FITNESS STATION AND HARDCOURT TS 25-1 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


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INDEX PAGE TECHNICAL SPECIFICATIONS (CONT'D) SECTION 26 TREE & SHRUB PLANTING AND TURFING TS 26-1 SECTION 27 MULTI-STOREY CARPARK TS 27-1 SECTION 28 ELECTRICAL SUB-STATION/UTILITIES CENTRE/DUSTBIN COMPOUND TS 28-1 SECTION 29 EATING HOUSES TS 29-1 SECTION 30 MISCELLANEOUS (BUILDING) TS 30-1 SECTION 31 LIFT INSTALLATION/REFURBISHMENT TS 31-1 SECTION 32 GENERAL REPAIR TO BUILDING WORKS TS 32-1 SECTION 33 REMEDIAL WORK TO RAINWATER SEEPAGE THROUGH THE TS 33-1 EXTERNAL WALLS SECTION 34 RECTIFICATION OF ALIGNMENT OF BUILDING ELEMENTS AND TS 34-1 STRUCTURAL REPAIRS SECTION 35 SITE LANDSCAPING WORKS TS 35-1 SECTION 36 GENERAL REQUIREMENTS FOR SANITARY, WATER AND TS 36-1 OTHER PLUMBING INSTALLATION SECTION 37 SANITARY INSTALLATION TS 37-1 SECTION 38 WATER INSTALLATION TS 38-1 SECTION 39 GAS PIPE INSTALLATION TS 39-1 SECTION 40 TRANSFER PUMPING SYSTEM INSTALLATION TS 40-1 SECTION 41 MISCELLANEOUS (SANITARY & WATER INSTALLATION) TS 41-1 SECTION 42 RESERVED TS 42-1 SECTION 43 BOOSTER PUMPING SYSTEM INSTALLATION TS 43-1/11 SECTION 44 DRY/WET RISING MAIN AND DOWN COMER (FIRE FIGHTING) TS 44-1 INSTALLATION SECTION 45 FIRE PROTECTION INSTALLATION TS 45-1 SECTION 46 GENERAL REQUIREMENTS FOR ELECTRICITY SUPPLY AND TS 46-1 EXISTING ELECTRICAL/TELEPHONE INSTALLATIONS AND LIGHTNING PROTECTION SYSTEM SECTION 47 ELECTRICAL INSTALLATIONS TS 47-1 SECTION 48 OUTDOOR AMENITIES LIGHTING TS 48-1 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.


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INDEX PAGE TECHNICAL SPECIFICATIONS (CONT'D) SECTION 49 LIGHTNING PROTECTION TS 49-1 SECTION 50 MATV INSTALLATIONS TS 50-1 SECTION 51 SETTING OUT, EXCAVATION AND DRAINLAYING TS 51-1 SECTION 52 MATERIALS, WORKMANSHIP AND CONSTRUCTION IN TS 52-1 GENERAL FOR EXCAVATION AND CIVIL ENGINEERING WORKS SECTION 53 CONSTRUCTION AND WORKMANSHIP FOR ROADS AND DRAINS TS 53-1 SECTION 54 CONSTRUCTION AND WORKMANSHIP FOR SEWERS TS 54-1 SECTION 55 CONSTRUCTION AND WORKMANSHIP FOR EARTHWORKS TS 55-1 SECTION 56 APPENDICES TS 56 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.


GENERAL SPECIFICATIONS


SECTION 1 : GENERAL SPECIFICATIONS

CONTENT Page 1.1 General 1.1.1 Definitions, Abbreviations and Interpretations GS 1 1.1.2 Payment of Employer's Bills, Expenses, etc GS 2 1.1.3 Insurance Policies GS 3 1.1.4 Stamp Duties GS 5 1.1.5 Novation, Assignment and Direct Submission of Warranties and Agreements GS 5 1.1.6 Liquidated Damages for Delay in Completion GS 5 1.1.7 Indemnity Against Claims by Occupants GS 6 1.1.8 Provisional Sum GS 6 1.1.9 Prime Cost Sums GS 6 1.1.10 Overclaim Leading to Overpayment GS 6 1.1.11 Recovery of Legal Costs for Court Proceedings GS 6 1.1.12 Goods and Services Tax GS 7 1.1.13 Carriage by Sea GS 7 1.1.14 Bribery GS 7 1.1.15 Site Occupation GS 8 1.1.16 Works and/or Materials Warranty GS 8 1.1.17 Assessment of Extension of Time due to Exceptionally Inclement Weather GS 8 1.1.18 Research Work, Publicity Materials and Community Relations Activities GS 9 1.1.19 Contract Documents And Reference Materials On Site GS 9 1.1.20 Shortfall In Floor Area GS 9 1.1.21 Trade Subcontractors GS 10 1.1.22 Contract Payment By GIRO/EPS GS 10 1.1.23 Restriction On Use Of Project Information GS 11 1.1.24 Stand-By Plumber And Electrician For Restoring Essential Services During Defects Liability Period GS 11 1.1.25 Audit Of M & E Systems GS 11 1.1.26 Protection Of Personal Data GS 12 1.1.27 Precautionary Measures To Be Taken During A Disease Pandemic GS 13 1.1.28 Alternative Offer For Inclusion Of M& E Lift Plant GS 13 1.2 Work Parameters 1.2.1 Maximum Allowable Working Period GS 14 1.2.2 Maximum Number of Workers for Works Within Flat GS 14 1.2.3 Working Hours GS 14 1.2.4 Maximum Allowable Noise Level GS 14 1.2.5 Site Conditions and Information GS 15 1.2.6 Joint Site Inspection GS 15 1.2.7 Use of Common Areas and Surrounding Estate GS 16 1.2.8 TOL Fee for Land outside Contract Boundary GS 16 1.2.9 Detailed Work Programme GS 17 1.2.10 Preservation of Trees GS 17 1.2.11 Earth Control Measures GS 19 1.3 Site Management 1.3.1 Site Management GS 21 1.3.2 Project Team GS 21 1.3.3 Employment Of Contractor's Site Personnel GS 22 1.3.4 Project Manager - Qualification/Experience/Responsibilities GS 23 1.3.5 Public Relations Officer - Qualification/Experience/Responsibilities GS 23


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CONTENT Page 1.3.6 Assistant Public Relations Officer - Qualifications/Experience/Responsibilities GS 24 1.3.7 Standby Plumber and Standby Electrician - Qualifications/Experience/Responsibilities GS 24 1.3.8 Safety Officer and Supervisor GS 24 1.3.9 Health Supervisor GS 24 1.3.10 Security Guard GS 25 1.3.11 Housekeeper GS 25 1.3.12 Replacement Of Site Personnel GS 26 1.3.13 Compliance With Requirements And Submission Of Information Of Site Personnel GS 26 1.3.14 Inclusion Of Cost And Failure To Employ The Site Personnel GS 26 1.3.15 Application For Release Of Site Personnel GS 27 1.3.16 Superintending Officer's Decision GS 27 1.3.17 Employment of Workmen/Workmanship, Uniforms and Identification Badges GS 27 1.3.18 Project Manager/Engineers To Attend BCA's Course On Effective Supervision In GS 27 Retrofitting Projects 1.3.19 Monthly Progress Reports GS 28 1.3.20 Conservancy Works GS 28 1.3.21 Pest Control and Surveillance GS 29 1.3.22 Warning/Notices of Works and Disruption GS 29 1.3.23 Reserved GS 29 1.3.24 Contractor's Work in Connection with Subsidiary Contracts GS 30 1.3.25 Project Plaque GS 30 1.3.26 Telephone Techniques Course for Public Relations Officer Assistance Public Relations GS 30 Officer and Senior Security Guard 1.3.27 Environmental Public Health Measures GS 30 1.3.28 Allocation Of Man-Year Entitlements GS 31 1.4 Services, Utilities & Temporary Facilities 1.4.1 Cables/Services Detection GS 32 1.4.2 Diversion of Services GS 32 1.4.3 Disruption to Services, Utilities and Facilities GS 33 1.4.4 Existing Services Valves, Manholes, Etc GS 33 1.4.5 Site Layout Plan GS 34 1.4.6 Site Offices GS 34 1.4.7 Study Room and Rest Area GS 38 1.4.8 Workers' Rest Area GS 38 1.4.9 Erection of Temporary Structures GS 39 1.4.10 Certificate of Supervision for Temporary Structures GS 39 1.4.11 Lightning Protection to Temporary Structures and Metal Structures GS 39 1.4.12 Water GS 39 1.4.13 Electricity GS 39 1.4.14 Cost of Water and Electricity GS 40 1.4.15 Computer Software and Hardware GS 41


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CONTENT Page 1.4.16 Provision of Safety Helmets and Safety Boots GS 47 1.4.17 Equipment for Defect Checking GS 47 1.4.18 Metal Detector GS 47 1.4.19 Temporary Sanitary Facilities for Occupants GS 47 1.4.20 Temporary Sanitary Facilities for Staff and Workmen GS 48 1.4.21 Temporary Drainage System GS 49 1.4.22 Temporary Store Room for Lift Parts GS 49 1.4.23 Site Access and Control and Provision of Hoarding GS 49 1.4.24 Access Roads and Protective Crossings GS 51 1.4.25 Signboards GS 51 1.4.26 Gas Works GS 51 1.4.27 Information Centre and Infoline GS 52 1.4.28 Stationery for Employer's Officers GS 52 1.4.29 Temporary Electricity Supply And Installation GS 54 1.4.30 Compliance With The Technical Guidelines For Fire Safety GS 54 In Temporary Buildings In Construction Worksites 1.5 Work Methods 1.5.1 Work Methods for all Trades GS 55 1.5.2 Measurement Plan and Survey Method GS 55 1.5.3 Workshop Drawings and Samples GS 56 1.5.4 Part Removal or Demolition of Existing Structure GS 56 1.5.5 Demolition of Existing RC/Masonry Wall GS 56 1.5.6 Screen Wall GS 57 1.5.7 Occupants' Fixtures and Fittings Affected by the Works GS 57 1.5.8 Protection of existing Structures Services and Properties GS 59 1.5.9 Care of the Works and Materials GS 59 1.5.10 Damage to Public/Private Property GS 60 1.5.11 Lifts and Transportation of Workers/Materials GS 60 1.5.12 Use of Mobile Work Platforms for External Facade Works GS 60 1.5.13 Bell System for Passenger/Material Hoist GS 60 1.5.14 Handheld Hacking Tools GS 60 1.5.15 Cutting of Steel Member GS 60 1.5.16 Pollution or Disturbance GS 61 1.5.17 Inspection of the Works GS 61 1.5.18 Equipment/Material Storage GS 62 1.5.19 Removal and Dumping of Debris, Surplus Materials, Etc GS 62 1.5.20 Cleaning of Public and HDB Maintained Roads and Drains GS 62 1.5.21 Cleaning Up on Substantial Completion GS 63 1.5.22 Rectification of Defects after Certification of Completion GS 63 1.5.23 Mechanical Mixer GS 63 1.5.24 Pasting of Translucent PVC Film at Affected Bedroom Windows GS 63


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CONTENT Page 1.6 Materials 1.6.1 Metric Components GS 64 1.6.2 Materials and Workmanship GS 64 1.6.3 Approval of Samples And Trade Names GS 64 1.6.4 Reserved GS 65 1.6.5 PSB Quality Certificate GS 66 1.6.6 Precautions Against Materials Being Taken Out Of Site GS 66 1.6.7 Approval for the use of Ready-Mixed Concrete GS 66 1.6.8 Colour of Works/Materials GS 66 1.6.9 Delivery and Preparation of Materials GS 66 1.6.10 Storage Facility for Cement GS 66 1.6.11 Supply Of Concreting Materials GS 67 1.6.12 Credit Terms and Conditions For Employers Materials GS 68 1.6.13 Ordering Materials GS 69 Appendix A10 GS 70 Appendix A10A GS 71 1.7 Labour 1.7.1 Labour Laws GS 79 1.7.2 Keeping Records Of Workmen GS 79 1.7.3 Employment Of Illegal Immigrants GS 79 1.7.4 Employment Of Skilled Tiler GS 79 1.8 Construction Equipment 1.8.1 Maintenance of Construction Equipment GS 80 1.8.2 Contractor's Construction Equipment GS 80 1.8.3 Movement of Construction Equipment GS 80 1.8.4 Works within Railway Protection Zone and Railway Safety Zone GS 80 1.8.5 Construction Equipment GS 81 1.8.6 Approved Construction Equipment GS 84 1.9 Safety 1.9.1 Site Safety Measures GS 85 1.9.2 Reporting of Accidents GS 98 1.10 Nuisance and Irregularities 1.10.1 Nuisance And Irregularities GS 99 1.11 Quantum of Security Deposit 1.11.1 Security Deposit GS 100 Appendix W1 GS 101 Attachment A GS 108

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UPG07/S1.DOC(1) lkk(181206) DPD

HOUSING & DEVELOPMENT BOARD

STANDARD SPECIFICATIONS FOR UPGRADING WORKS

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"or shall mean the Superintending Officer's Representative. SO's Rep" "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 shall mean as approved by the Superintending Officer's Representative and as approved" further defined in subclause 1.6.3 "Approval of Samples and Trade Names" of the General Specifications. "as required" or shall mean as required or as shown or as indicated in the Drawings and/or "as shown" or Specifications. "as indicated" "HDB List" shall mean the Housing and Development Board's List Of Products And Suppliers. The following abbreviations are used in the Specifications : AISI - American Iron & Steel Institute ANSI - American National Standard Institute ASTM - American Society for Testing and Material BCD - Building Control Division BS - British Standard BCA - Building and Construction Authority cm - centimetre cm2 or cm2 - square centimetre cm3 or cm3 - cubic centimetre CP - Code of Practice CPF - Central Provident Fund Board DIN - Deutche Industrie Normen EIA - Electronic Industry Association EMA - Energy Market Authority FSSD - Fire Safety & Shelter Department g - gram Grid/PowerGrid - Power Grid Ltd HDB - Housing & Development Board IDA = Info-Communications Development Authority of Singapore IEC - International Electrotechnical Commission IECEE - IEC System for Conformity Testing and Certification of Electrical Equipment JIS - Japanese Industrial Standard kg - kilogram KN or kN - kilonewton LTA - Land Transport Authority m - metre ml - millilitre mm - millimetre m2 or m2 - square metre

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1.1.1 Definitions, Abbreviations and Interpretations (Cont'd) mm2 or mm2 - square millimetre m3 or m3 - cubic metre mm3 or mm3 - cubic millimetre MEWR - Ministry of the Environment and Water Resources MSSL - Market Support Services Licensee MOM - Ministry of Manpower MRT - Mass Rapid Transit MRTC - Mass Rapid Transit Corporation N - newton NEA - National Environment Agency NParks - National Parks Board No. or no. - number PE - Professional Engineer SPSL - SP Services Ltd PSB PSB Corporation Pte Ltd PUB - Public Utilities Board RC or rc - Reinforced Concrete SAC - Singapore Accreditation Council SCV - StarHub Cable Vision Pte Ltd SINGLAS - Singapore Laboratory Accreditation Scheme SS - Singapore Standard TC - Town Council TIA - Telecommunications Industry Association SingTel - Singapore Telecommunications Ltd v/v - measured by volume w/w - measured by weight C - degree Celcius % - percent or percentage - plus or minus - lesser than or equal - greater than or equal < - lesser than > - greater than Words importing the singular shall also include the plural and vice versa where the context requires. The clause 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 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 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 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.

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1.1.3 Insurance Policies The Contractor shall warrant that the insurance policies issued in accordance with Clauses 27 and 28 of

the Conditions shall include the following requirements : (A) Insurance for Workmen's Compensation (i) The Policy shall be issued in the prescribed form attached and shown as Appendix W1. (ii) The Insured shall be "(Name of Contractor to insert) as Contractor and all his sub-

contractors, and the Housing & Development Board as Principal FTRR & I". (iii) The period of insurance shall commence from the date the site is handed over to the

Contractor and shall end upon expiry of the Defects Liability Period under the Contract. The policy shall firstly cover the whole of original Time for Completion plus 6 months and plus a further 12 months for Defects Liability Period.

(B) Insurance for Personal Injury and Property Damage (i) The Policy shall be issued in the joint names of the Employer, the Contractor and all his

sub-contractors. (ii) The limits of liability shall be as specified under the Appendix To Public Sector Standard

Conditions Of Contract For Construction Works. (iii) The period of insurance shall commence from the date the site is handed over to the


(iv) The period of notice for cancellation of the Policy, if such period is stipulated, shall read 30

days. (v) The Policy shall expressly include coverage of the following risks : (a) Death, bodily injury or damage to property caused or occasioned by the insured's

sub-contractor or by such sub-contractors' employees. (b) Death, bodily injury or damage to property caused or occasioned by or connected

with or arising from the ownership, possession or use by or on behalf of the insured of any equipment or machinery not expressly specified in the Schedule of such equipment or machinery.

(c) Liability assumed by the insured by agreement, unless such liability would have

attached to the insured notwithstanding such agreement. (d) Liability in respect of loss or damage to property belonging to or in the charge or

control of the insured or of any servant or agent of the insured. (e) Liability in respect of injury to or illness of any person or loss or damage to any

property or land or building caused by vibration or removal or weakening of support. (f) Liability in respect of injury, illness, loss or damage caused by or connected with or

arising from any commodity, article or thing supplied, repaired, altered or treated by or to the order of the insured, happening at any of the insured's premises.

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1.1.3 Insurance Policies (Cont'd) (B) Insurance for Personal Injury and Property Damage (Cont'd) (vi) The policy shall expressly contain the following endorsements : (a) "This Policy shall cover all the Contractor's insurance obligations with regard to

personal injuries or death and injury or damage to property real or personal (including property of the Housing & Development Board but not the Works themselves) arising out of or in the course of or by reasons of the carrying out of the Works stated in the Contract between the Housing & Development Board and the Contractor (name of Contractor to insert)."

(b) "Each of the parties comprising the Insured shall for the purpose of this Policy be

considered as a separate and distinct unit and the words "the Insured" shall be considered as applying to such party in the same manner as if a separate policy had been issued to each of the parties and the insurers hereby agree to waive all rights of subrogation action which they may have or acquired against of any accident in respect of which any claims is made hereunder provided nevertheless that nothing in this clause shall be deemed to increase the limitation on extent of Insurer's liability in respect of any one accident or series of accidents as stated in the Schedule."

(c) "This Policy is extended to cover the employees and/or representatives of the

Housing & Development Board, consultants, other professional parties and clerk-of-works whilst on the contract site as third parties".

(d) Notwithstanding anything stated in the Policy to the contrary, cover under the Policy

shall not be suspended in the event of stoppage of work by the Contractor on the Contract site from any cause for a period not exceeding 90 days. In the event of partial or total cessation of work, the Insured shall use diligence and do all things reasonably practicable to protect the insured property. Subject otherwise to the Terms Exceptions and Conditions of this Policy

(C) Insurance for Works (i) The Policy shall be issued in the joint names of the Employer and the Contractor. (ii) The Works insured shall read the project title given in the Employer's Letter of Acceptance. (iii) The sum insured shall be the same as the Contract Sum. (iv) The period of insurance shall commence form the date the site is handed over to the


(v) The period of notice for cancellation of the Policy, if such period is stipulated, shall read 30

days. (vi) The policy shall expressly contain the following endorsements : (a) "This Policy shall cover all the Contractor's Works insurance obligations stated in the

Contract between the Housing & Development Board and the Contractor (name of Contractor to insert)."

(b) Notwithstanding anything stated in the Policy to the contrary, cover under the Policy

shall not be suspended in the event of stoppage of work by the Contractor on the Contract site from any cause for a period not exceeding 90 days. In the event of partial or total cessation of work, the Insured shall use diligence and do all things reasonably practicable to protect the insured property. Subject otherwise to the Terms Exceptions and Conditions of this Policy

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1.1.4 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 costs and expenses arising out 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.

1.1.5 Novation, Assignment and Direct Submission of Warranties and Agreements In the event the management and maintenance of the Employer's properties or the Works or any part

thereof shall be taken over by a duly constituted Town Council, the Employer shall have the right to arrange for, and the Contractor and his Specialist (if applicable) shall agree and accept the whole or part of the Contract to be novated and/or assigned to the aforesaid Town Council upon the same terms and conditions.

The Employer shall also have the right to require and the Contractor and his Specialist (if applicable) shall

agree and accept, that any Deeds of Warranty and/or Maintenance Agreements and/or Bonds and/or Deposits required under the Contract shall be executed and submitted direct to and for the benefit of the aforesaid Town Council.

The Contractor is deemed to have allowed in the Contract Sum all costs, expenses, stamp duties and

losses arising from compliance with these provisions. 1.1.6 Liquidated Damages for Delay in Completion In the event completion of the Works specified in the Appendix to the Public Sector Standard Conditions

of Contract For Construction Works is further divided into separate phases or sub-phases, the rate of liquidated damages in respect of each phase or sub-phase of the Works shall be re-computed according to the following rates and pro-rated against the original amount specified in the aforesaid Appendix :

Works inside Flats : $100.00 per unit per day (exceeding Maximum Allowable Working Days) Works inside Shops with/without Living Quarter : $80.00 per unit per day (exceeding Maximum Allowable Working Days) Works inside Eating Houses/Fast Food Outlet/Coffee House/ : $135.00 per unit per day Restaurant with/without Living Quarter (exceeding Maximum Allowable Working Days) Works inside Communal and Social premises, eg. kindergarten : $90.00 per unit per day (exceeding Maximum Allowable Working Days) Works in common areas within the Block Outside Units : $240.00 per block per day Works in common areas within the Precinct Outside Blocks : $600.00 per day Multi-storey carpark - Carpark Lot : $5.00 per lot per day Utility Centre/Detached Dustbin Compound : $45.00 per number per day Electrical Substation : $470.00 per number per day Consumer Switchroom : $25.00 per number per day Market/Hawker Centre : $50.00 per 100 m2

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1.1.7 Indemnity Against Claims By Occupants The Contractor shall indemnify the Employer against all claims, demands proceedings damages costs

charges and expenses submitted by any Occupant arising out of or in consequence of any delay in completion of the Works.

1.1.8 Provisional Sum 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.

1.1.9 Prime Cost Sums Where Prime Cost Sums (P.C. Sums) 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. Sums 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. Sums in

the Form of Tender. P.C. Sums 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 less 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.

1.1.10 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.

1.1.11 Recovery of Legal Costs for Court Proceedings All legal costs, charges and expenses (including but not limited to solicitors' fees as between solicitor and

client) incurred by the Employer for the purpose of or incidental to the enforcement by the Employer of any rights and remedies under the Contract or any other contracts between the Employer and the Contractor or in respect of any garnishee proceedings which may be brought or commenced against the Employer by the Contractor's creditors may be deducted by the Employer from monies due or becoming due to the Contractor including any retention monies, financial bonds or security deposits or other bonds.

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1.1.12 Goods and Services Tax The Contractor shall not include in the rates and prices quoted in the Contract Sum, the Goods and

Services Tax (hereinafter referred to as "GST") chargeable from 1 April 1994 for the supply of goods, services or works required in the Contract. All rates and prices quoted shall be exclusive of GST.

The Employer shall reimburse the Contractor any GST charged on the goods, services or works supplied. The Contractor shall declare his GST status in his Tender. The Contractor shall clearly indicate whether

he is, or whether he will be a taxable person under the GST Act. The Contractor shall, if available, furnish the GST registration number to the Employer.

The Contractor will be deemed to be a taxable person if no declaration to the contrary is made in the Form

of Tender. The Contractor who declares himself to be a non-taxable person under the GST Act but who becomes a taxable person after he has been awarded the Contract shall forthwith inform the Employer of his change in GST status. The Contractor shall be entitled to reimbursement by the Employer of any GST charged on the goods, services or works he supplies after his change in GST status.

1.1.13 Carriage by Sea The Contractor shall ensure that the carriage by sea of all goods, materials 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, material 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, material or equipment used by an approved line(s) shall be sufficient

evidence of their carriage by an approved line(s) in compliance with this Clause. 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 letters from each and every 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 Clause, 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 having to comply with this Clause.

The list of current approved lines can be obtained from the Procurment Office, Development And

Procurement Department, HDB, Basement 1, HDB Hub, 480 Lorong 6, Toa Payoh, Singapore 310480. 1.1.14 Bribery During the currency of this Contract, the Contractor and his authorized agents or representatives shall not

offer or attempt to offer any bribes, commission or gift to the Employer's employees. Should it be discovered that bribes, commission or gift have been given to any of the Employer's employees, the employment of the Contractor under this Contract may be terminated. The decision of the Superintending Officer with regard to the interpretation and implementation of this Clause shall be final and binding on and conclusive against the Contractor.

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1.1.15 Site Occupation The Site will be occupied by occupants throughout the duration of the Works. The Employer has also

engaged and/or will engage other Contractor or other Contractors who will also use the Site at the same time as the Contractor is carrying out the Works. The Contractor shall not make any claim against the Employer in respect of acts or omissions of such occupants other than claims falling within Clause 14 of the Conditions. The Contractor shall not delay or obstruct or interfere unnecessarily or improperly with the occupants' right of peaceful and quiet enjoyment of the premises and site or to delay or obstruct or interfere with such other Contractors in carrying out of their works.

1.1.16 Works And/Or Materials Warranty (a) In every case where the Specifications require the Contractor's Specialist to co-warrant the works

or materials to be executed or supplied under the Contract, such Specialist, subject to such other requirements as may be prescribed in the Specifications, may only be employed by the Contractor with the Employer's prior written approval, and the Employer will approve such employment if the Specialist gives his written undertaking to execute the Deed of Warranty prescribed under the Specifications. If such written undertaking is not given, then the Contractor shall appoint an alternative Specialist willing to give the written undertaking. The employment of any Specialist who refuses to give his written undertaking will not be recognised by the Employer, and no Specialist may commence any work or supply any materials before his written undertaking is given.

(b) The Employer's prior written approval of such Specialist's employment shall not in any way affect or

diminish the Contractor's contractual obligations to the Employer in respect of any work or materials executed or supplied by such Specialist on behalf of the Contractor, and the provisions of this Clause shall not in any way affect or diminish the Employer's entitlement to withhold the payment of any sums due to the Contractor by reason of the Contractor's and/or Specialist's failure to execute and submit the Deed of Warranty within the time specified.

1.1.17 Assessment Of Extension Of Time Due To Exceptionally Inclement Weather The assessment of exceptionally inclement weather shall not take place until the expiry of the Time for

Completion or previously extended Time for Completion. Such assessment shall be made on the following basis :

(a) There shall first be assessed the number of wet days and equivalent wet days (as specified in

paragraph (f) below on which the Contractor has been substantially delayed in the carrying out of the Works by rain (hereinafter called "delay days").

(b) A wet day shall be one where the rainfall figure as calculated as described in this paragraph

exceeds 10.2 mm during the 24 hour period used by the Meteorological Service. The rainfall figure shall be the average island-wide rainfall calculated by the Employer using rainfall records received by the Employer monthly from the 5 Standard Stations of the Meteorological Service.

(c) The expected number of wet days during the Time for Completion or extended Time for

Completion as the case may be shall be derived from the following table which is deemed to record the average number of wet days for the respective months based on the Meteorological Service's records between 1995 and 2004 (hereinafter referred to as "expected wet days") :

Jan Feb Mar Apr May Jun 7 4 6 7 5 4 Jul Aug Sep Oct Nov Dec 5 6 5 6 7 8

(d) For each month of the Time for Completion or extended Time for Completion as the case may be

there shall be assessed whether the number of delay days in that month is more than (positive) or equal to (zero) or less than (negative) the expected wet days in that month.

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1.1.17 Assessment Of Extension Of Time Due To Exceptionally Inclement Weather (Cont'd) (e) The positive, zero and negative monthly assessments made in accordance with paragraph (d)

above shall then be added together and a net total reached. If such total is a positive number then such total shall constitute the extension of time due to exceptionally inclement weather.

(f) The period commencing from excavation works to the completion of ground beams where the

ground floor slab is not a critical activity or the completion of ground floor slab where the ground floor slab is a critical activity is hereinafter called "sub-structure construction period" and the works carried out during such period is hereinafter called "sub-structure works".

For the assessment of extension of time due to exceptionally inclement weather during the sub-

structure construction period, the respective monthly average number of wet days as specified in paragraph (b) above shall be multiplied by a factor of 2.0 if the wet days are less than or equal to 5 or by a factor of 1.6 if the wet days exceed 5. The product so derived shall be referred to as "equivalent wet days" and are subject to a maximum of 30 days per month.

(g) If the sub-structure works do not commence on the first day of the month, then the number of

equivalent wet days for that month in which the sub-structure works commence shall be pro-rated in accordance with the proportion of the number of calendar days for the construction of sub-structure works in that month to the total number of calendar days in the said month. Similarly, if the sub-structure works are not completed on the last calendar day of the month, then the number of equivalent wet days for that month in which the sub-structure works are completed shall be pro-rated in accordance with the proportion of the number of calendar days for the construction of sub-structure works in that month to the total number of calendar days in the said month. The assessment of extension of time due to exceptionally inclement weather during the sub-structure construction period shall be based on the actual sub-structure construction period of each building block, including multi-storey carpark/garage.

1.1.18 Research Work, Publicity Materials and Community Relations Activities The Contractor shall render all necessary assistance to the SO Rep or other authorised persons

undertaking research work or procuring publicity material or organising any community relations activities on any aspects of the work including the holding of block parties.

The Contractor shall provide all necessary assistance, attendance, facilities, utilities, etc for filming, video

recording or other media activities undertaken on the Employer's behalf. The Contractor shall also allow his staff and workers to be featured in such films, recordings or other media activities. All costs and expense incurred by the Contractor shall be deemed to be included in the tender sum.

1.1.19 Contract Documents And Reference Material On Site The Contractor shall keep at the Site a complete set of the signed Contract documents described in the

Agreement; and a complete set of the further or revised Drawings and instructions referred to in the Conditions, and the relevant Codes of Practice or Standards. The documents shall be made available for inspection and use by the Superintending Officer, SO Rep and any other person authorised by the Superintending Officer in writing.

1.1.20 Shortfall In Floor Area The Contractor shall at his own cost and expense ensure that the Space Adding Items constructed comply

in all respects with all Drawings and Specifications. In the event of any departure from such Drawings and Specifications resulting in a shortfall in the floor area of any of the Space Adding Items constructed as compared to the same floor area as measured in accordance with the Drawings and Specifications, the Contractor shall indemnify, reimburse and hold the Employer harmless in respect of any demands, claims, damages, loss and/or expense (including any legal fees and expense that the Employer may incur) arising therefrom. The Contractor shall remain so liable notwithstanding the issuance by the Superintending Officer of any Certificate of Substantial Completion, Final Completion Certificate and/or any Final Account Certificate under the Contract.

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1.1.21 Trade Subcontractors The Contractor, with the exception of his own direct employed workers, shall engage only BCA registered

contractors or SLOTS (Singapore List of Trade Subcontractors) registered trade subcontractors or corporations/firms listed in the HDB List for executing the Works for the following trades :

(1) Timber formwork; (2) Metal formwork; (3) Steel reinforcement work; (4) Structural steel fitting; (5) Concreting; (6) Bricklaying; (7) Joinery; (8) Painting; (9) Plastering; (10) Roofing; (11) Tiling; (12) Electrical engineering; (13) Air-conditioning, refrigeration & ventilation works; (14) Plumbing & sanitary and gas piping; (15) Fire protection; (16) Waterproofing; (17) Piling; (18) Concrete repairs; (19) Metal work; (20) Cable installation & road reinstatement; (21) Drain laying/Pavement & kerb construction; (22) Curtain Wall/Cladding; (23) Metal scaffolding (Erectors); Within 14 days from the date of the Letter of Acceptance, the Contractor shall submit a list of his

subcontractors for the Works to the SO Rep. Where the Contractor changes his subcontractor, he shall also submit such information to the SO Rep.

For the purposes of this clause, the relevant BCA register, SLOTS register and HDB List shall be those

applicable at the commencement of work for the respective trades. The Contractor shall be responsible for any eventual delay in the progress of the Works owing to his

failure to ensure the required on-time registration of his subcontractors and no extension to the Time for Completion shall be granted on account of such delays.

1.1.22 Contract Payment By GIRO/EPS All payments under the Contract by the Employer to the Contractor shall be effected through the Inter-

Bank 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.



1.1.23 Restriction on Use of Project Information The Contractor shall ensure that he or his subcontractors/suppliers do not quote or make references to

the project design, products, technologies or methods of construction used in the Works for trade promotion, advertisement, publicity, etc or any other purposes without the written approval of the SO Rep. This requirement shall not be applicable to proprietary products, technologies or methods of construction introduced by the contractor or his subcontractor/suppliers.

The Contractor shall further undertake that all information and documentation disclosed or made available

to him pertaining to particulars of residents or their flats, shall not be used for any purpose other than for effective execution of the Works. In this regard, the Contractor shall, within 21 days after the acceptance of the Contractor's Tender by the Employer, submit, without any proviso, a Letter of Undertaking as shown in Attachment A.

1.1.24 STAND-BY PLUMBER AND ELECTRICIAN FOR RESTORING ESSENTIAL SERVICES DURING DEFECTS LIABILITY PERIOD (a) The Contractor shall also provide a stand-by plumber and a stand-by electrician for 24 hour stand-

by duties for every day, including Sundays and Public Holidays, throughout the Defects Liability Period. The plumber and electrician need not be stationed on the Site but would be called upon to rectify Defect causing disruption to essential supply such as water and electricity

(b) The Contractor or his representatives shall be contactable 24 hours a day, for every day, including

Sundays and Public Holidays throughout the Defects Liability Period by means of telephone, handphone, radio pager, facsimile or any other suitable modes of communications

(c) The stand-by plumber and/or stand-by electrician shall attend to such Defect within 30 minutes

from the time a request for their services is made. They shall carry out the rectification expeditiously and in a workmanlike manner to restore the essential services quickly to minimise any inconveniences to the residents. In the event the stand-by plumber and/or stand-by electrician fail to attend or fail to attend within the time frame stipulated, the SO Rep shall exercise his right to impose charges under clause 1.6 'Nuisance and Irregularities".

(d) Within fourteen days from the Date of Substantial Completion of the 1st building block, the

Contractor shall submit to the SO Rep for his approval the name and contact numbers of the stand-by plumber and stand-by electrician.

1.1.25 Audit Of M & E Systems The Contractor shall test the M&E systems and rectify all Defect before submiting all M&E

systems test reports endorsed by the Consultant to HDB Building Quality Department. HDB Building Quality Department reserves the right to audit any of the M & E systems installed by the Contractor. The Contractor shall provide the necessary manpower, equipment and means of access for the audit by HDB. The Contractor shall rectify all Defect detected during the audit and report to the Consultant for verification



1.1.26 PROTECTION OF PERSONAL DATA 1.1.26.1 Security

The Contractor shall take all reasonable measures to ensure that Personal Data held in connection

with this Contract is protected against loss, and against unauthorised access, use, modification, disclosure or other misuse in accordance with the procedures set out in these Clause and subclauses, and that only authorised personnel have access to the data.

The Contractor shall not vary the security procedures set out in this Contract without the prior written

approval of the HDB. 1.1.26.2 Use

The Contractor shall use any Personal Data held in connection with this Contract only for the

purposes of fulfilling its obligations under this Contract.

1.1.26.3 Disclosure

The Contractor shall not disclose any Personal Data obtained in connection with this Contract without the written approval of the HDB. The Contractor shall immediately notify the HDB where it becomes aware that a disclosure of Personal Data may be required by law.

1.1.26.4 Transfer Of Personal Data Outside Singapore

The Contractor shall not transfer Personal Data held in connection with this Contract outside

Singapore, or allow parties outside Singapore to have access to it, without the prior written approval of the HDB.

1.1.26.5 Employee Awareness Of Data Protection Requirements And Undertakings

The Contractor shall ensure that any employee of the Contractor or any sub-contractor, requiring

access to any Personal Data held in connection with this Contract gives an undertaking in writing to not access, use disclose or retain Personal Data except in performing their duties of employment and is informed that failure to comply with this undertaking may be a criminal offence and may also lead the Contractor to take disciplinary action against the employee.

1.1.26.6 Advising The HDB Of Any Breach Of The Data Protection Clauses

The Contractor shall in respect of any Personal Data held in connection with this Contract immediately

notify the HDB where the Contractor becomes aware of any breach of the obligations contained herein by itself or any sub- contractor, or by their respective employees.

1.1.26.7 Reasonable Requests, Directions And Guidelines

The Contractor shall in respect of any Personal Data held in connection with this Contract co-operate

with any reasonable requests, directions or guidelines of the HDB, or HDBs nominee/agent, arising in connection with the handling of Personal Data.

1.1.26.8 Ensuring Clauses Have Effect After The Contract Has Ended

All the above Clauses shall continue to have effect after the termination or expiry of the Contract. 1.1.26.9 Sub-Contracting

Whether or not the Contract contains clauses that prevent sub-contracting or assignment without the

consent of the HDB, the written approval of the HDB must still be obtained pursuant to the clauses herein, before any Personal Data can be disclosed to any sub-contractor or assignee. The Contractor shall ensure that all clauses relating to protection of Personal Data are included in any Contract between the Contractor and sub-contractor or assignee.



1.1.27 Precautionary Measures To Be Taken During A Disease Pandemic The contractor shall be required to implement necessary precautionary measures as advised by the

Ministry of Health or other relevant Authorities during a disease pandemic. Based on the recommendations from the government's advisory, the contractor shall follow up expeditiously to plan for such contingency and stock up necessary supplies or equipment (eg thermometers) so as to be able to implement the required measures in a short notice.

1.1.28 Alternative Offer For Inclusion Of M& E Lift Plant Notwithstanding that the Form of Tender may not have any option for Tenderers to offer M& E Lift Plant,

Tenderers may, in addition to submitting a Base Offer which comply fully or very substantially with the Specifications, submit alternative offers which include the provision of M&E Lift Plant. The M& E Lift Plant offered shall be from approved suppliers listed in the HDBs List of Products & Suppliers. Tenderers shall also comply with all the provisions stipulated in the Instructions To Tenderers



1.2 WORK PARAMETERS 1.2.1 Maximum Allowable Working Period All Works inside each Unit must be entirely completed in not more than the total number of working days

(Maximum Allowable Working Days) stated in the Appendix to the Public Sector Standard Conditions of Contract For Construction Works. The Maximum Allowable Working Days for all Works Inside Units for all Units located in the same Block or Phase must fall within the Overall Time For Completion stated in the aforesaid Appendix. For the purpose of this Clause, the Maximum Allowable Working Days shall not include the part of work in the erection of any components (including balconies, room extensions etc.) or fittings where workers do not need to gain access into the interior of the Units. The computation of the number of working days in which the Contractor has access into the interior of Units shall be based on the minimum unit of one day irrespective of the amount of time the Contractor spent inside the Unit during the particular day. If the works inside each Unit remains incomplete within the Maximum Allowable Working Days and/or within the Overall Time for Completion, the amount(s) stated in the Appendix to the Public Sector Standard Conditions of Contract For Construction Works as liquidated damages for Works Inside Units exceeding the Maximum Allowable Working Days or exceeding the Overall Time for Completion or both shall become payable by the contractor.

1.2.2 Maximum Number of Workers for Works within Flat Not more than five (5) workers shall be allowed to carry out works within each unit at anytime. The

Contractor shall employ the same workers for each trade to execute and complete the works within each unit. The workers shall not be replaced unless prior approval from the SO Rep has been obtained.

1.2.3 Working Hours Notwithstanding Clause 11.1 of the Public Sector Standard Conditions of Contract For Construction Works

and the Particular Conditions of Contract, the Contractor shall carry out Works within the flats between 9.00 am and 5.00 pm daily from Mondays to Saturdays. For Works within the block outside the flat and works within the precinct, the Contractor shall carry out the works between 8.00 am to 6.00 pm daily from Mondays through Saturdays.

None of the Works shall be carried out during the hours outside the time period aforesaid or on Sundays

or on public holidays without the permission in writing of the SO Rep. 1.2.4 Maximum Allowable Noise Level Judicious management and control over the activities within the construction site shall be exercised by the

Contractor for the abatement of noise nuisance. The noise level generated shall comply with the following maximum allowable noise standards and the latest noise control regulations imposed by the relevant authorities :

Duration Per Day Point of Measurement [Hours] [dB(A)]

8 80 4 85 2 90 1 95 100 The method of measurement shall be as follows : Source of Noise Point of Measurement

Outside the flat The nearest flat or not exceeding 10m from source. Within the flat The nearest room or not exceeding 5m from source.



1.2.4 Maximum Allowable Noise Level (Cont'd) Failure to comply with the above noise level requirements shall be deemed a breach of Clause 1.10

"Nuisance & Irregularities". An administrative charge will be imposed for each occasion of non-compliance. The Contractor shall, whenever necessary, modify his work methods immediately to ensure compliance with the noise level specified.

The Contractor shall provide two numbers of one-man-operated sound level meters for the SO Rep to

measure and monitor the noise level throughout the duration of the Works. The Contractor shall submit proposals for the purchase and use of the sound measurement instrument

within 14 days after acceptance of his Tender for the approval of the SO Rep. 1.2.5 Site Conditions and Information The flats, shops, etc on Site shall remain occupied by the Occupants during the execution of all Works. The information on the existing buildings and services on Site furnished in this Contract is offered as

available information and may not reflect the most accurate data; its accuracy is not guaranteed and the Contractor must verify actual site conditions to his satisfaction by whatever non-destructive methods he deems appropriate, subject to the Employer's approval.

The Contractor shall be deemed to have visited the Site before tendering and satisfied himself as to the

local conditions, accessibility, the full extent and character of the Works, the supply of and conditions affecting labour and the probable adverse effect of weather on the general execution of the Contract. The Contractor shall also be deemed to have satisfied himself as to the Occupants' fittings and fixtures (including furniture, electrical appliances, finishes, etc.) within flats, shops, etc. that will be affected by the Works and the probable extent of damage, removal and protection, of such fittings and fixtures that may be required. The occupants' fittings and fixtures that are likely to be affected may include but are not limited to the following items :

(a) window grilles

(b) furniture

(c) cookers, ovens

(d) sinks, basins etc.

(e) cabinets, wardrobes, etc

(f) electrical appliances and wirings

(g) water/gas pipes

(h) floor/wall tiles

(i) air-conditioners (window units, compressors, etc) No claims shall be allowed on grounds of ignorance of the conditions under which the Works will be

executed. 1.2.6 Joint Site Inspection Prior to the commencement of the Works on site, the Contractor shall arrange a joint site inspection with

the SO Rep to determine the existing conditions of the site. For Works within the flats, the joint site inspection shall involve the occupants of the flats. All existing defects, type and conditions of structures, fittings and fixtures on site including those within occupants' flats shall be properly recorded by way of notes, sketches and photographs. The records of items in common areas within the block and precinct shall be endorsed jointly by the Contractor and the SO Rep. The records of items within the flats shall be jointly endorsed by the Contractor, SO Rep and the occupants of each individual flat. The original copy of the records shall be retained by the SO Rep with a copy kept by the Contractor.



1.2.6 Joint Site Inspection (Cont'd) The records shall include but not be limited to the following : (i) Existing defects to be repaired and rectified by the Contractor;

(ii) Existing defects the rectification of which is not included in the contract;

(iii) Elements to be altered and the extent of alteration;

(iv) Elements to be demolished and the extent of demolition;

(v) Elements to be replaced;

(vi) Elements to be added;

(vii) Existing condition and/or defects of occupants' fittings and fixtures;

(viii) Occupants' fittings and fixtures to be removed and the extent of such removal;

(ix) Occupants' fittings and fixtures that are likely to be damaged, the probable extent of such damage and reasons why such damage is inevitable.

(x) Any other items as directed by the SO Rep. 1.2.7 Use of Common Areas and Surrounding Estate The Contractor shall confine his work site within the designated contract boundary unless prior written

permission has been obtained from the SO Rep. No trespassing on the surrounding carpark/property is permitted. The Contractor shall ensure that his workers take their meals and rest within the approved workers' rest area and that they do not make use of the common areas (eg. void decks, common corridors, etc), empty units or other structures and open spaces whether within or outside the contract boundary as living quarters, rest area or for any other use at any time during the Time for Completion and any time period where liquidated damages are imposed under the Contract.

No workman, except on official duty approved by the SO Rep, is allowed to stay within the site boundary

after working hours. Building materials are not allowed to be placed or stored outside the contract boundary unless approved

by SO Rep. Unless otherwise approved by the SO Rep, an adequate area within the contract boundary shall be set

aside by the Contractor for the residents to hold functions like religious ceremonies, funeral wakes, etc. The size of the area to be provided, its location and any subsequent changes to them shall be subject to the approval of the SO Rep.

1.2.8 TOL Fee for Land outside Contract Boundary Where the Contractor requires land outside the contract boundary for the setting up of workers' quarters

and storage of materials 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 Management Section allows the Contractor the use of such land, the Contractor shall at his own costs and expenses 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. The Contractor shall reinstate the land to its original condition before handing over the land back to the Lands Management Section.

The Contractor shall use such land allocated solely for the purpose of executing this Contract. 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.



1.2.9 Detailed Work Programme Within one (1) month after the acceptance of his Tender, the Contractor shall submit a detailed

programme of all works in the Contract to the SO Rep for approval. The programme shall include sequence of operations of all works inside each unit of flat, within each block and within the precinct and provide details of probable services disruption. Activities along the critical path shall be highlighted in the programme.

Two and a half (2) months prior to the commencement of work within each unit of flat, the Contractor

shall submit a detailed programme stating the types of work and all tasks to be carried out on each working day for the SO Rep's approval.

In the event the SO Rep considers that the programme is unrealistic, incorrect or incomplete the SO Rep

shall instruct the Contractor to correct, complete and re-submit the programme in a manner the SO Rep deems fit.

The Contractor shall endeavour to plan carefully and diligently to ensure that any programme determined

and submitted by him is within his ability to comply and perform. The Contractor is not allowed to commence any work before obtaining the written approval of the work

programme from the SO Rep. 1.2.10 Preservation Of Trees Where any existing tree(s) on the Site is stipulated to be preserved (hereinafter referred to as "preserved

trees" for the purpose of this clause), the Contractor shall take all necessary precaution to avoid damage or injury to such trees and its roots and comply with the following requirements :

(A) Treatment of Preserved Trees In Area Of Fill (a) Tolerable Depth of Fill The area around preserved trees shall not be filled more than 300mm in depth. (b) Construction of Well Around Trees Well not exceeding 1m in depth shall be constructed around preserved trees. The minimum

diameter of well shall be 6 times the diameter of preserved trees measured at the trunk 0.5m above ground level. Details of well shall be as shown in the Drawings.

(B) Treatment Of Preserved Trees in Area of Cut (a) Tolerable Depth of Cut The area around preserved trees shall not be cut to a depth exceeding 300mm. (b) Retention of Raised Planter Around Tree An area around preserved trees shall be retained as raised planter to conserve the root

system. The minimum diameter of raised planter shall be 6 times the diameter of preserved trees measured at the trunk 0.5m above ground level. Details of retention of raised planter are as shown in the Drawings.



1.2.10 Preservation Of Trees (Cont'd) (C) Protection Of Existing Trees From Physical Damage By Equipment Etc During Construction (a) All preserved trees shall be protected against damage during construction operation by

suitable fencing or armouring. The protection of preserved trees shall be placed before commencing any excavation or grading operation/work and shall be maintained in repair for the duration of the contract unless otherwise directed. The extent of fencing shall be determined by the SO Rep. Fencing shall be erected all round not less than 1.2m from the trunk of preserved trees.

Individual preserved trees near heavy construction traffic shall be wrapped with gunny sacks

and 50mm x 100mm planks worn vertically as armour around the trunk and spaced at no more than 50mm apart to a height of 1.5m above ground.

(b) Any damage to preserved tree root system shall be repaired immediately by the Contractor

under the supervision of a qualified horticulturist. Roots that are exposed and/or damaged during grading operations shall be cut off immediately and the inside of the exposed and/or damaged area cleaned; cut surfaces shall be treated with approved sealing compound and topsoil spread over the exposed root area.

(c) Any damage to preserved tree branches shall be treated in accordance with the Drawings. (i) Branch Trimming Of Damaged Branches (1) A first cutting is to be made at point A, 300mm from the main trunk of

preserved trees; depending on the diameter of the branch being cut. The depth of the cut shall not be more than of the diameter of the branch.

(2) A second cutting is to be made at point B, parallel to cutting at point A. The

distance between these two cuttings shall be 75mm to 150mm. (3) Make a shallow cut at C. (4) Final cut is to be sharp and clear. (5) 2 coats of anti-fungus wound sealant are to be applied on cut area. (ii) Wound Treatment (1) Clean away ragged or loose edges of bark with a sharp pruning knife. (2) Shape the wound into an oval, pointed at both ends. (3) Coat the entire exposed surface with tree-wound paint. (d) If any preserved trees are severely injured by mechanical equipment, etc., the SO Rep shall

impose charges against the Contractor in accordance with Clause 1.10 "Nuisance And Irregularities".

(D) Health & Condition Of Preserved Trees (a) The Contractor shall ensure that : (1) Compaction of soil around preserved trees shall be avoided. (2) No materials shall be stored within the root system. (3) There shall be no spillage of any nature within the spread of the preserved trees. (4) There shall be no parking of vehicles underneath the preserved trees. (5) There shall be no dumping of excavated materials, concrete, equipment etc. within

the spread of the preserved trees crown. (6) Soil around preserved trees is properly cultivated to ensure that adequate supply of

air and water get to the roots.



1.2.10 Preservation Of Trees (Cont'd) (D) Health & Condition Of Preserved Trees (Cont'd) (a) (Cont'd) (7) The site is drained in periods of heavy rainfall and irrigated during periods of drought. (b) The Contractor shall also carry out any other routine maintenance of the preserved trees eg.

branch trimming, pesticide spraying etc. as instructed by the SO Rep. (c) If the growth of the preserved trees is stifled, the Contractor shall inter-alia bear the cost of

making good and charges in accordance with Clause 1.10 "Nuisance and Irregularities" shall be imposed against the Contractor.

1.2.11 EARTH CONTROL MEASURES The Contractor shall be responsible for preventing silt from being washed into public drains by

implementing effective Earth Control Measures (ECM) for the construction site to meet the requirements under the latest Sewerage and Drainage Act Cap 294. (Information on ECM requirements can be found in the Code of Practice on Surface Water Drainage and the website www.pub.gov.sg/ECM). The Contractor shall note that the ECM are for the containment and treatment of silty discharges due to the impact of rainwater. ECM are not meant for the treatment of wastewater due to construction activities (such as slurry from tunnelling, pipe-jacking and bore-piling works) which shall be treated to comply with the requirements under Environmental Pollution Control Act (Chapter 94A).

The Contractor shall submit in his Tender, the schematic ECM plans of the Site for the whole of the Time

for Completion including any time periods where liquidated damages are imposed under the Contract, taking into account the different phases of construction activities. He shall also provide the name of the Qualified Erosion Control Professional (QECP) who will be endorsing the ECM plan after the tender is awarded. These schematic ECM plans shall make the Contractor aware of the ECM requirements to implement an effective ECM. Notwithstanding the submission of these schematic ECM plans, the Contractor shall be deemed to have included all costs and expenses for complying with all the ECM requirements in the Contract Sum

Before construction works commence on site, the Contractor shall engage a QECP to plan and design the

ECM, and he shall install the ECM according to the QECP's design. The ECM plan and design shall be submitted 1 week after the award of the contract. During the course of the construction works, the Contractor together with his QECP shall review the ECM proposal regularly to meet the changing needs of the construction activities. The Contractor shall improve the ECM as advised by his QECP. The planning and design of the ECM shall meet the minimum requirements stipulated and in accordance to the Code of Practice on Surface Water Drainage.

The Contractor shall maintain the ECM for the whole duration of the Time for Completion including any

time periods where liquidated damages are imposed under the Contract, to ensure that it is effective at all times. Proper records detailing the maintenance works, supported by dated photographs, shall be kept by the Contractor for verification.

The Contractor shall not remove the ECM until all works are completed and upon the advice of his QECP. The Contractor shall submit the ECM proposal duly endorsed by his QECP to PUB for records. The

proposed ECM shall consist of the following four parts: (i) Project Particulars The following information shall be provided under the Project Particulars: (a) Project description (b) Name and address of site occupier; (c) Site area and contract period; (d) Location map and site plan. (ii) Erosion Control Plan (described in 1.2.11.1) (iii) Sediment Control Plan (described in 1.2.11.2) (iv) Site ECM Management System (described in 1.2.11.3)



1.2.11.1 Erosion Control Measures During construction, the Contractor shall minimize the formation of bare surfaces under the ECM's Erosion

Control Plan. The Plan shall depict graphically the activities, including sequence of work, type and duration for each phase of construction activities to include the following measures to:

(a) sequence and schedule of the earthworks I demolition works in stages and progressively with the

subsequent construction activities and building works. (b) minimise site disturbance by keeping site clearance works to a minimum by retaining as much of the

existing vegetation as possible. (c) pave up the bare surfaces and all construction access by concrete or milled waste or other suitable

materials. (d) protect the bare slopes with close-turfing, concrete grouting, or erosion control blanket. (e) protect the earth stockpiles with erosion control blanket. (f) restore ground cover over disturbed areas, which are or have become bare, as soon as possible. (g) cover up the active work surfaces with canvas sheet during rain or at the end of the workday. 1.2.11.2 Sediment Control Plan The Contractor shall put in place the ECM's Sediment Control Plan, which aims to capture the sediments

washed down from the construction sites. Some of these sediment control measures and facilities, which must be in place before the works start, shall include but not limited to the following:

(a) concrete-lined cut-off drains (minimum C7 precast channel) along the perimeter of the construction

sites. (b) silt fence properly installed and embedded onto the ground along the perimeter cut-off drains

(between the construction site and the cut-off drain). (c) sedimentation basins or any other sediment filtering or settling system of adequate size and sufficient

numbers along the perimeter cut-off drain and before the discharge points into public drain. (d) a storage basin / tank may be required to temporarily store the large amount of rainwater falling on to

the whole site before treatment. (e) a treatment system to treat silty discharge shall be provided before the discharge points into public

drain. (f) turbidity curtains shall be installed along all the exposed slopes / riverbanks for works in or adjacent

to water bodies, such as canals, rivers, sea or in a reclamation work. The silty discharge trapped within the turbidity curtain shall be allowed to be settled / treated and removed.

1.2.11.3 Site ECM Management System The Contractor, shall at the advice of his QECP, put in place a site monitoring and reporting system

including but not limited to the following: (a) Daily ECM inspection report by the QECP appointed site personnel (b) Regular site inspection by the QECP (c) Continuous monitoring and recording system shall be installed at the discharge point (after ECM)

before public drain 1.2.11.4 Submission Of Design Basis And Calculations The QECP shall submit full basis of design back up with design calculations to show clearly how the

perimeter cut-off drains, silt fence, sedimentation basins, storage basin / tank and treatment system are designed and sized as well as how such design will effectively filter off silt and allow only clean water to discharge into public drains. The QECP shall also submit the design specifications on the treatment system which can effectively treat the silty discharge from the construction site. The intensity of a one-in-two year storm should be adopted for the proposed design.



1.3 SITE MANAGEMENT 1.3.1 Site Management Prior to the commencement of works on site, the Contractor shall submit to the SO Rep for his approval

the following details on site planning : (a) Site organisation structure (b) Names and roles of Contractor's staff (c) Names and roles of sub-contractors (d) Names of manufacturers and suppliers (e) Manpower schedule for each trade (f) Materials purchase and delivery schedule for each trade (g) Site layout plan as specified in the Specifications (h) Schedule of heavy equipment (i) Master Schedule of Construction for each Block and each unit of flat therein as specified in the Clause for Programme of Work The site organisation chart shall include the appointment of project manager, engineer(s), foremen,

supervisors, clerical staff, public relations personnel, standby tradesmen, security guards, housekeepers, the reporting system, procedure and method to monitor work progress, handle complaints/claims, and provide coordination with HDB's officers, Town Councils' officers and residents.

The Contractor shall also 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 minimum disruption to occupants' daily and household routines, a smooth progress of and good workmanship in the Works, the SO Rep is empowered to require the Contractor to make at the Contractor's own costs and expenses all necessary modifications to the plans as may be necessary or appropriate.

Approval by the SO Rep of the Contractor's site planning details, revised site planning details and further

information provided under this clause shall not in any way affect the Contractor's liabilities or obligations under the Contract.

1.3.2 Project Team The Contractor shall form a project team to ensure the smooth completion of the project. The team shall

be led by a project manager, engineers, supervisors, public relations officers and foremen to manage the Works.

The project team shall ensure : (i) great care in detailed preparation and planning of the Works; (ii) careful monitoring of all activities on site; (iii) coordination of all works/services; (iv) constant supervision; (v) thorough quality control; (vi) immediate reporting and respond to SO Rep's call within 10 minutes; (vii) great attention given to the residents' requests, complaints or claims; (viii) site cleanliness The project team shall attend progress meetings chaired by the SO Rep to ensure full control of supply of

materials, good performance of workers, correct sequence of operation, smooth progress of works and to solve problems, complaints and/or claims. No claim from the residents shall be left unanswered for more than three (3) days. All complaints from the residents shall be acted within the same working day.



1.3.3 Employment Of Contractors Site Personnel Unless otherwise stated in other clauses and subclauses, 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 Type of Personnel Not Exceeding $10 Million

Exceeding $10 Million

But Not Exceeding $25 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

1 Project Manager One One One One One One $8,600 per Project Manager per month

2 Public Relations Officer

One One One Two Two Two

$3,600 per Public Relations Officer per month

3

Assistant Public Relations Officer

One One One Two Two Two

$2,700 per Assistant Public Relations Officer per month

4 Standby Plumber One One One Two Two Two $150 per Standby Plumber per day

5 Standby Electrician One One One Two Two Two

$150 per Standby electrician per day

6 Registered Safety Officer One One One One One One $4,800 per Safety Officer per month

7 Safety Supervisor One One One Two Two Three

$4,000 per Safety Supervisor per month

8 Health Supervisor One One Two Two Two Two

$3,000 per Health Supervisor per Month



1.3.3 Employment Of Contractors Site Personnel (Cont'd)

Number of Each Type of Personnel to be Employed Based On Contract Sum Value

S/N Type of Personnel Not Exceeding $10 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

9

Senior Security Guard (per shift after working hours)

One One One One One One $1,967 per Security Guard per Month

10

Security Guard (per shift after working hours)

Two Two Three Three Four Four $1,967 per Security Guard per Month

11

Security Guard(during working hours)

Two Two Two Two Two Two $1,967 per Security Guard per Month

12 Housekeeper One per building

block

One per building

block

One per building

block

One per building

block

One per building

block

One per building

block

$1,200 per Housekeeper per Month

13 Horticultural Supervisor* One One One One One One

$2,000 per Horticultural Supervisor per Month

* Note: The period and duration of employment of the Horticultural Supervisor shall be in accordance with subclause 26.1.5 "Horticultural Supervisor"

1.3.4 Project Manager - Qualifications/Experience/Responsibilities 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 : For the appointment of Project Manager, the candidate shall have a recognised Degree in Architecture/

Civil/Structural Engineering/Building Science/Quantity Surveying with at least 5 years of relevant post-graduate working experience in the building construction industry. A member of the Society of Project Managers, Singapore is preferred.

1.3.5 Public Relations Officer - Qualifications/Experience/Responsibilities The Public Relations Officer shall be competent and possesses the skill, knowledge and ability to manage

public relations with the residents effectively. The Public Relations Officers duties and responsibilities shall include dealing with requests and resolving complaints of the residents, arrange for works to be carried out within flats and to ensure a high standard of public relations with the residents.

The public relations officer shall have a minimum qualification of GCE "A" Level Certificate with at least

two years of public relations work experience. The Public Relations Officer shall be capable of communicating effectively in English and one other official language.



1.3.6 Assistant Public Relations Officer - Qualifications/Experience/Responsibilities The Assistant Public Relations Officer shall be competent and possesses the skill, knowledge and ability

to handle public relations with the residents effectively. The Assistant Public Relations Officers duties and responsibilities shall include attending to residents requests and complaints by manning the information counter and the information hotline. In addition, the Assistant Public Relations Officer shall perform any clerical duties such as typing, photo-stating and filing assigned by the SO Rep.

The Assistant Public Relations Officer shall have a minimum qualification of GCE "O" Level Certificate

with at least a year of clerical work experience. The Assistant Public Relations Officer shall be capable of communicating effectively in English and one other official language.

1.3.7 Standby Plumber and Standby Electrician - Qualifications/Experience/Responsibilities The Contractor shall provide 24-hour standby plumbing and standby electrical services, including

Saturdays, Sundays and Public Holidays. The standby plumber and standby electrician shall be competent and possess the necessary skill

knowledge and ability to resolve all plumbing and electrical faults or problems on site respectively. The standby plumber and standby electrician shall be responsible for the rectification of any failure of water/sanitary installations and electrical installations respectively including clearing of pipe or minor sewer chokages and restoration of any disrupted services or utilities.

The Contractor shall provide each standby plumber and standby electrician with a pager. The Contractor

shall ensure that the pagers are switched on at all times. The standby plumber and standby electrician shall respond to all calls from the SO Rep, residents, Contractors staff and security guards within five (5) minutes and carry out any necessary repairs within thirty (30) minutes from receipt of the call.

The standby plumber and standby electrician shall be stationed on the site from 8.00 am to 10.00 pm on

all working days. 1.3.8 Safety Officer and Supervisor The employment of a Safety Officer on a full-time basis is required notwithstanding the requirements of

The Factories (Safety Officers) Order 1994 or other provisions in the Contract. The qualifications of the Safety Officer, his duties and responsibilities shall be in accordance with the requirements of The Factories (Safety Officers) Order 1994. In addition, the Safety Officers duties shall include those of the Safety Supervisors. The Safety Officer shall also be responsible for the Safety Management System on the site.

The Contractor's Safety Supervisors shall possess recognised and approved certification in construction

safety to take charge of all matters relating to safety. The Safety Supervisors shall spend their time fully performing the following:

(i) To supervise safety and promote safety conduct;

(ii) To inspect and rectify any unsafe place of work;

(iii) To correct any unsafe practice; and

(iv) To ensure that the provisions of the Factories Act and its Subsidiary Legislation made thereunder are complied with. 1.3.9 Health Supervisor (i) The Contractor's Health Supervisor shall have a certificate in "Vector Control Course for

Construction Site Supervisors" issued by ENV or equivalent and competent to take charge of all matters related to environmental health on the Site. The Health Supervisor shall have at least one year's previous experience in a similar c

HDB Specification A&A

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