Materials and Workmanship Specification For Architectural Works

Definitions

For the purposes of this worksection the following definitions apply:

- Quality package: A designated part of the works identified under a heading in the Co-ordinated Installation Programme. An individual quality system is required for each quality package.

- Contractor: The supplier of a product to the Authority within the defined quality package. Includes the contractor’s subcontractors and suppliers.

- Product: That which is supplied by the contractor, which may be either

• tangible (e.g. a built item); .

• intangible (including services such as design and delivery of tangible product); or .

• both.

- Servicing: “After sales” service, repairs, maintenance.

- Working days: do not include Saturdays, Sundays or recognized public holidays in the Republic of Singapore.

Quality system schedule

Document control

Changes to documents: Review and make changes to shop drawings to take account of the Engineer’s comments using the same functions or organisations that created the original, except as described in the Document control schedule.

Document control schedule

Purchasing

External audits: Carry out pre-tender surveys of subcontractors and suppliers and audit subcontractors and suppliers as necessary to confirm their capability to meet the Authority’s requirements. All surveys and audits are to be performed by a trained auditor accepted by the Engineer. Include audit and surveillance proposals in the package quality plan along with the results of pre-tender surveys.

Verification: The Engineer may verify at source, or upon receipt, that the purchased product conforms to requirements.

All costs pertaining to all relevant verification are to be borne by the Contractor.

Installation

Carry out installation checks identified in method statements, and at all identified hold and witness points, to confirm the product meets the Authority’s requirements. All checks are to be performed by a staff member identified in the method statement and accepted by the Engineer.

Verification: The Engineer may carry out independent checks to verify that the purchased product conforms to requirements.

Product identification and traceability schedule

Control of nonconforming product

Concession: Before the provision or repair of a nonconforming product, report the proposal to the Engineer for Acceptance. Do not provide or repair nonconforming product without the Engineer’s acceptance.

Quality records

Retention: Retain quality records for 7 years from the date of the final certificate unless identified otherwise in the schedule below.

Evaluation: Make quality records available to the Engineer for evaluation, within 2 days of checks carried out on site: 5 days of checks carried out off site and 7 days for checks carried out overseas.

Period of evaluation: To be agreed at each request, within a minimum of 5 working days and a maximum of 15 working days.

Quality records retention schedule

Servicing schedule

Ensure all servicing requirements are included in the operation and maintenance manuals delivered to the Engineer.

Complete the schedule below for items serviced prior to handover. Include all reports prepared by the service engineer in the operation and maintenance manuals delivered to the Engineer.

Quality plan approval

Submit to the Supervising officer, for approval, a quality plan for each quality package, at least 15 working days before work on that package commences. Keep on site a copy of the approved quality plan.

No. of copies to be submitted: 3.

Quality plan

General: Comply with the recommendations of SPRING Singapore. Include inspection and test plans.

Quality manual: Comply with the recommendations of SPRING Singapore.

Audit plan: Comply with the recommendations of SPRING Singapore.

General

Conform to the Land Transport Authority General and Particular Specifications issued for the works.

General

Where stations are identified as having Civil Defence (CD) requirements, refer to the CD Design Criteria for requirements and information relating to the upgrading of materials, material thicknesses, composition and fixing methods for CD stations.

Precedence

Requirements of individual technical worksections of the specification override conflicting requirements in this worksection.

It is intended that this specification:- forms the basis of all Architectural Materials and Workmanship specifications. is completed by users to suit their particular project in the following manner:-

Delete all sections and clauses not required by the project.

Complete all clauses where the symbol > is found by providing information to suit the project. Add any requirements not covered by the specification retaining the written style of the specification.

All added requirements are subject to acceptance by The Land Transport Authority.

All added requirements may be retained by the Land Transport Authority for use in future editions of this base specification.

Completed project specifications are subject to acceptance by The Land Transport Authority.

Current editions

Use referenced documents which are editions, with amendments, current 3 months before the date of tender, except where other editions or amendments are required by statutory authorities.

Site copies: ensure a copy of all standards referred to in the specification is available, in English, for use by the Contractor and Authority’s staff throughout the duration of the works.

For the purposes of this specification, where standards provide information in imperial units it shall be converted to metric in accordance with BS 350: Parts 1&2.

Where the standards referred to in this specification make recommendations or suggestions, these shall be taken as mandatory requirements.

In the event of conflict or contradiction between referenced standards, or within this specification, the most onerous requirement shall be adopted.

Contractual relationships

Read all architectural drawings in conjunction with the structural and services design including combined services drawings (CSD) and structural electrical and mechanical (SEM) drawings and other installation drawings issued on the project.

Verify all dimensions on site prior to:

- The start of shop drawings.

- The ordering of material.

- The start of installation works.

Resolve any discrepancies on site prior to the start of the works.

Language

The English language shall be used throughout this specification

General standards

Plumbing and drainage: To AS/NZS 3500.2.2.

Units of measurement: To AS ISO 1000.

General

The following definitions apply:

- Accepted: “Accepted”, “reviewed”, “directed”, “rejected”, “endorsed” and similar expressions mean “accepted (reviewed, directed, rejected, endorsed) in writing by the Engineer.

- Engineer: The person appointed by the Land Transport Authority to act as the Engineer for the purposes of the main contract. All references to the Engineer in this specification shall be taken to include the Engineer’s Representative.

- Engineer’s Representative: Any person appointed by the Engineer to assist him in his duties or to perform any other duties assigned to him by the Engineer.

- Exterior: “Exterior” and External” refer to spaces outside the perimeter wall of the building.

- Give notice: “Give notice”, “submit”, “advise”, “inform” and similar expressions mean “give notice (submit, advise, inform) in writing to the Engineer.

- Interior: “Interior” and “Internal” refer to building spaces within the perimeter wall of the building.

- Non-Combustible; To BS 476, Part 4.

- Obtain: “Obtain”, “seek” and similar expressions mean “obtain (seek) in writing from the Engineer.

- Proprietary: “Proprietary” mean identifiable by naming manufacturer, supplier, installer, trade name, brand name, catalogue or reference number.

- Provide: “Provide” and similar expressions mean “supply and install”.

- Samples: Includes samples, prototypes and sample panels.

- Substantial completion: “Substantial Completion” and “Practical Completion” are synonymous terms.

- Supply: “Supply”, “furnish” and similar expressions mean “supply only”.

Technical

Metallic coated steel: Includes zinc-coated steel, zinc/iron alloy-coated steel, and aluminium/zinccoated steel.

Pipe: Includes pipe and tube.

Tests

Except where otherwise defined in referenced documents, the following definitions apply:

- Pre-completion tests: Tests carried out before completion tests.

- Type tests: Tests carried out on an item identical with a production item, before delivery to the site.

- Production tests: Tests carried out on the purchased equipment, before delivery to the site.

- Site tests: Tests carried out on site.

- Completion tests: Acceptance tests and final tests.

- Acceptance tests: Tests carried out on completed installations or systems and, except for final tests, before the date for practical completion, to demonstrate that the installation or system, including components, controls and equipment, operates correctly, safely and efficiently, and meets performance and other requirements.

- Final tests: Acceptance tests carried out before completion of the maintenance period.

Maintenance period

Co-extensive with the defects liability period.

Abbreviations

AAMA: American Architectural Materials Association.

ABS: Acrylonitrile-butadiene-styrene.

AS: Australian Standard.

AS/NZS: Australian/New Zealand Standard.

ASTM: American Society for the Testing of Materials.

BCA: Building and Construction Authority: Singapore.

BMS: Building management system.

BS: British Standard.

CD: Civil Defence. Singapore.

CFC: Chloroflourocarbon.

CSD: Combined services drawings.

EPDM: Ethylene-propylene dienemonomer.

FARIMA: The Fibreglass and Rockwool Insulation Manufacturer’s Association of Australia.

GRP: Glass-fibre reinforced polyester.

ISO: International Standards Organisation.

LTA: Land Transport Authority: Singapore.

M&E: Mechanical and Electrical.

MIG: Metal Inert Gas.

NATA: National Association of Testing Authorities, Australia.

NEBB: National Environmental Balancing Bureau, Australia.

PE: Professional Engineer registered in Singapore.

PSB: Singapore Productivity and Standards Board.

PVF2: Polyvinylidene fluoride.

PTFE: Polytetrafluoroethylene.

PTFE: Polyvinvl Butral (plastic interlayer in laminated glass).

QP: Qualified person (architect) registered in Singapore.

SEM: Structural Electrical and Mechanical.

SIA: Singapore Institute of Architects.

SS: Singapore Standard.

SSL: Scientific Services Laboratory, Australia.

SWC: System Wide Contractor.

STC: Sound transmission co-efficient.

TT-S: American Federal Specification.

UDL: Uniformly distributed load.

UPVC: Unplasticised polyvinyl chloride.

UV: Ultra violet light.

U-value: Heat loss, watts/square metre/degree Kelvin W/m² K.

General

Arrange all inspections and approvals required by regulatory authorities in sufficient time to ensure the regular progress of the works and eliminate unnecessary delays.

Provide documentary evidence of all required inspections and approvals prior to covering work.

General

Architectural details shown on the drawings show design intent only, except where noted otherwise.

Follow figured dimensions where provided or calculable. Before commencing work, obtain site measurements and all other necessary information. Cross Refer: Contractual Relationships, Item 2.3 above.

Levels: Spot levels take precedence over contour lines and ground profile lines.

Equipotential bonding requirements (EPB)

Comply with the requirements of Section 13.9 of the Authority’s Design Criteria Volume 2 of 2, and Singapore Standard CP5.

Touch voltage protection

Comply with the requirements of Section 13.3 of the Authority’s Design Criteria Volume 2 of 2 where metals are proposed within the station protection zone.

Constructability

The works shall be designed to maximise prefabrication, utilising factory finished elements to be erected directly with minimal site works.

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Notice

Witness points: Written notice of inspection is to be given. Advise if and when parts are to be concealed.

Hold points: Written notice of inspection is to be given. Do not conceal those parts of the works to be inspected without approval.

Minimum notice for inspections to be made: 1 working day for on-site inspectors, otherwise 2 working days.

Concealed services: Give notice so that inspection may be made of all items, including works by System Wide Contractors to be concealed.

Insufficient notice: insufficient or unreasonably short notice shall not constitute grounds for a claim of delay.

Notice: provide the following information in all notices for inspection.

- The location of the inspection.

- That date and time on which the inspection is required.

- Whether or not the part is to be concealed.

- The extent of disruption to subsequent activities should the item to be inspected be rejected.

- The date on which subsequent work is programmed to start.

General

The engineer reserves the right to request that materials proposed for the works are tested as required by this specification. The costs for all required tests shall be borne by the Contractor.

Programme

Submit a testing program which is consistent with the construction program. Include particulars of test stages and procedures.

Notice

General: Give notice so that designated tests may be witnessed.

Hold points: Do not carry out designated tests without approval.

Minimum notice for tests to be witnessed:

- 5 working days for site tests; and

- 10 working days for local (including Peninsular Malaysia) pre-delivery tests.

- 15 working days for tests carried out overseas (excluding Peninsular Malaysia).

Testing authorities

General: Except for site tests, have tests carried out by authorities accredited by SINGLAS to test in the relevant field, or an organisation outside Singapore recognised by SINGLAS through a mutual recognition agreement. Cooperate as required with testing authorities.

Site tests: Use instruments calibrated by authorities accredited by SINGLAS.

Reports

General: Submit copies of test reports, including certificates for type tests, showing:-

- the observations and results of tests.

- compliance or non-compliance with requirements.

- that materials are capable of performing as specified for the lifetime.

- that materials are capable of performing as specified in the ambient climatic conditions of Singapore and in the location in which they are used.

Materials will not be accepted as being in compliance with this specification until the test certification is accepted by the Engineer.

No. of copies of test reports and certificates: 3.

Endorsement

If site tests are to be carried out on parts of the works, do not conceal those parts and do not commence further work on those parts until the tests have been satisfactorily completed and compliance verified.

Test records

For designated tests, including pre-delivery tests, record results and submit reports or certificates in a form suitable for inclusion in operation and maintenance manuals.

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General

Provide a sample room for the storage of all samples on site. Ensure adequate lighting, shelving, racks and other furniture as required within the room.

Timing

Delays: Coordinate submissions of related samples.

Quantity

General: Unless noted otherwise in individual specification sections, submit 3 samples of each designated item and supporting documentation. Include ancillary items such as fasteners, flashings and seals.

Identification

Cross refer: Item 3.6 Submissions.

Approval

General: Do not commence work affected by samples until the samples have been accepted. Submit further samples as necessary.

Retention

Keep accepted samples in good condition on site, until practical completion.

Incorporation

If it is intended to incorporate samples into the works, submit proposals.

Incorporate in the works samples which have been accepted for incorporation. Do not incorporate other samples.

Criteria

Match accepted samples throughout the works.

Generally

Co-ordinate the submission and acceptance of all samples and shop drawings relevant to the construction of a prototype.

Agree the location of all prototypes with the Engineer.

Do not commence work illustrated by a prototype prior to the Engineer’s acceptance of the prototype.

Protect all prototypes from damage for the duration of the works.

Accepted prototypes may be incorporated into the works with the Engineer’s agreement.

Remove all prototypes which are not accepted by the engineer.

Design Prototype:

Design prototypes shall be specifically referred to in the documentation.

Design prototypes are intended to demonstrate to the Engineer that the works, or part of the works as designed will be capable of satisfying the requirements of the contract.

All general conditions referred to above apply equally to design prototypes.

Design prototypes may be used for testing purposes.

Design prototypes may be constructed on or off the site as agreed with the Engineer.

Make allowance for the need to revise design prototypes prior to their acceptance by the Engineer.

Confirmation Prototype:

A confirmation prototype is an installation identical, in all respects, to the remainder of the works. It is intended as confirmation of construction methods and standards of workmanship.

Unless specifically referred to, all references to confirmation prototypes shall be to prototypes constructed on site

General

Submit a complete list of products, manufacturers and fabricators for each specification section prior to submitting shop drawings and/or samples.

Timing

General: Submit documents in a timely manner, to suit the construction program. Make allowance for the need to revise all documentation prior to its acceptance by the Engineer. Co-ordinate submissions of related items.

Quantity

As determined by the Particular Specification.

Identification

Label each submission to identify the project, contractor, subcontractor or supplier, manufacturer, applicable product, model number and options, as appropriate and include pertinent contract document references. Include service connection requirements and product certification. Identify non-compliances with project requirements, and characteristics which may be detrimental to successful performance of the completed work.

Endorsement

Witness points: Give notice before commencing work affected by contractor’s submissions, unless the submissions have been accepted as satisfactory.

Hold points: Do not commence work affected by contractor’s submissions until the submissions have been accepted as satisfactory.

Errors: If a document contains errors, submit a new or amended document as appropriate, indicating changes since the previous submission.

Design

General: If part or all of an installation is to be designed by the contractor, submit documents showing the layout and details of the installation.

Variation documents: If it is proposed to change the installation from that shown on the contract documents, or if changes are required by statutory authorities, submit variation documents showing the proposed changes.

Errors

If a submission contains errors, make a new or amended submission as appropriate, indicating changes made since the previous submission.