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Architectural Specification Drafts Briefing Presentation to SIA 18 July 2003 BCA

NPQS Architectural Specification Briefing. NPQS DevelopmentBriefingReview of International Specification SystemsReview of existing Singapore specificationsKey FindingsDevelopment of Structure for Singapore NPQS Development Approach To NPQSTechnical Drafting

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Architectural Specification Drafts Briefing Presentation to SIA 18 July 2003 BCA

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    1. Introduce the aim to achieve well organised workIntroduce the aim to achieve well organised work

    2. NPQS Architectural Specification Briefing NPQS Development Briefing Review of International Specification Systems Review of existing Singapore specifications Key Findings Development of Structure for Singapore NPQS Development Approach To NPQS Technical Drafting – By Arup Architectural Specification Structure Drafting Protocol Drafting Review Process Public Review Summary and Queries

    3. Arup Appointed in November 2001 to carry out the development of the NPQS. Drafting of the architectural and engineering specifications Review and incorporate the best international and local practices to improve the productivity and quality of construction works in Singapore Provide a user friendly framework for widespread acceptance of the NPQS Providing the framework for the web based application WHAT are we doing and what is our goal?WHAT are we doing and what is our goal?

    4. Review of Specifications from Various Organisations WHAT are we doing and what is our goal?WHAT are we doing and what is our goal?

    5. HDB Specification Structure

    6. “PWD” Specification Structure

    7. Review of existing specs- Key Findings SINGAPORE SPECS Issued by different organisations quality and workmanship non-standardised often referring to different codes or standards. What’s the problem? What’s the problem?

    8. Review of existing specs- Key Findings SINGAPORE SPECS Issued by different organisations Highly prescriptive very detailed attempting to exercise control down to minute detail. What’s the problem? What’s the problem?

    9. Review of existing specs- Key Findings SINGAPORE SPECS Issued by different organisations Highly prescriptive and very detailed Long, complex phrases mixing technical requirements with contractual arrangements. What’s the problem? What’s the problem?

    10. Review of existing specs- Key Findings SINGAPORE SPECS Issued by different organisations Highly prescriptive and very detailed Long, complex phrases Specifications generally arranged by work package eg Facades, Doors etc. What’s the problem? What’s the problem?

    11. Review of existing specs- Key Findings SINGAPORE SPECS Issued by different organisations Highly prescriptive and very detailed Long, complex phrases Specs generally arranged by work package Private firms commonly produce new project spec from a past project, changing project specific requirements. Public organisation. commonly produces standard specs and issue “particular” spec to modify or incorporate project requirements. What’s the problem? What’s the problem?

    12. Review of National Specification systems NBS – United Kingdom Masterspec – USA Natspec – Australia Overview of Others WHAT are we doing and what is our goal?WHAT are we doing and what is our goal?

    13. NBS - Britain Structure

    14. NATSPEC - Australia Structure

    15. MasterSpec – USA Structure

    16. Review of existing specs- Key Findings INTERNATIONAL “NATIONAL” SPECS Standard template adopted and modified for use by different organisations Standardised ref to codes and standards Standardised requirements for quality and workmanship. How others had done itHow others had done it

    17. Review of existing specs- Key Findings INTERNATIONAL “NATIONAL” SPECS Standard template Movement towards performance specs Allow contractors’ to propose suitable solutions Establish and Specify overall objectives Set minimum requirements Set monitoring How others had done itHow others had done it

    18. Review of existing specs- Key Findings INTERNATIONAL “NATIONAL” SPECS Standard template Movement towards performance specs Simple imperative language Clear, concise, short Contractual requirements written in a section separate from the technical specs. How others had done itHow others had done it

    19. Review of existing specs- Key Findings INTERNATIONAL “NATIONAL” SPECS Standard template Movement towards performance specs Simple imperative language Specifications arranged and coded by trades Assembled by users as packages National specs as templates with blanks or provision for incorporating project requirements Tailored by users for adoption as project specs. How others had done itHow others had done it

    20. Approach to NPQS Role of NPQS Approach To Drafting of NPQS Specifications in NPQS Structure of specifications and Drafting Protocols

    21. Approach to NPQS Role of NPQS What are we producing? Who are we targeting to help?What are we producing? Who are we targeting to help?

    22. Approach to NPQS Role of NPQS THE ROLE OF SPECIFICATION : Part of contract documents: Conditions of Contract Drawings Bills of Quantities Preliminaries Technical Specifications (NPQS) : Convey design results to “Builder” as material and workmanship requirements. What are we producing? Who are we targeting to help?What are we producing? Who are we targeting to help?

    23. Using The NPQS A preview of how would NPQS be used!A preview of how would NPQS be used!

    24. Using The NPQS A preview of how would NPQS be used!A preview of how would NPQS be used!

    25. Using The NPQS A preview of how would NPQS be used!A preview of how would NPQS be used!

    26. Using The NPQS A preview of how would NPQS be used!A preview of how would NPQS be used!

    27. Positioning of NPQS A preview of how would NPQS be used!A preview of how would NPQS be used!

    28. To Achieve Our Quality & Productivity Objectives How can we fulfill our objective?How can we fulfill our objective?

    29. To Achieve Our Quality & Productivity Objectives How can we fulfill our objective?How can we fulfill our objective?

    30. Approach To NPQS Emphasis “Agreed” with steering committee, the group is to address technical correctnessEmphasis “Agreed” with steering committee, the group is to address technical correctness

    31. Agreed Approach To NPQS Emphasis “Agreed” with steering committee, the group is to address technical correctnessEmphasis “Agreed” with steering committee, the group is to address technical correctness

    32. Standard NPQS – PSD Example 2. PERFORMANCE REQUIREMENTS 2.1 Contractor’s Brief When carrying out the proposals as set out in clause 1.4.1, take account of the following requirements: 2.1.2 Fire Resistance Comply with the requirements of the FSSB and additional requirements of other statutory authorities having jurisdiction over the works if any. 2.1.3 Environmental 2.1.3.1 Thermal Performance Achieve the following thermal performance indicated in the PSD as assumed in the design. a. OTTV b. U-value

    33. 2. PERFORMANCE REQUIREMENTS 2.1.1 Structural 2.1.1.1 Dead Loads The self weight and other associated dead loads of the complete roof finishing system shall not exceed [……………………….…… KN/m2] Notes: a. Consult project C&S Engineer for advice on the designed value of finishes loads. 2.1.1.6 Maintenance Loads Maintenance loading requirements shall be [……………...………KN/m2] Notes: a. Consult project C&S Engineer for advice on provisions for maintenance loads. Standard NPQS – PSD Example

    34. 2.1.3 Environmental 2.1.3.1The thermal performance of the roof shall be [W/m2] Notes: a. Liase with project M&E Engineer for assumed design value. For air-conditioned building and the roof is provided with skylights or other materials which allows light through, the OTTV of the gross area of the roof shall not exceed 45 W/m2. c. For air-conditioned building not provided with skylights, the average U-value for the gross area of the roof shall not exceed the following limit for the corresponding weight group. Maximum U-value for Roof of Air-conditioned Building Standard NPQS – PSD Example

    35. Standard NPQS – PSD Example

    36. Agreed Approach To NPQS Emphasis “Agreed” with steering committee, the group is to address technical correctnessEmphasis “Agreed” with steering committee, the group is to address technical correctness

    37. Agreed Approach To NPQS Emphasis “Agreed” with steering committee, the group is to address technical correctnessEmphasis “Agreed” with steering committee, the group is to address technical correctness

    38. Agreed Approach To NPQS Emphasis “Agreed” with steering committee, the group is to address technical correctnessEmphasis “Agreed” with steering committee, the group is to address technical correctness

    39. Agreed Approach To NPQS Emphasis “Agreed” with steering committee, the group is to address technical correctnessEmphasis “Agreed” with steering committee, the group is to address technical correctness

    41. Agreed Approach To NPQS Emphasis “Agreed” with steering committee, the group is to address technical correctnessEmphasis “Agreed” with steering committee, the group is to address technical correctness

    42. Structure of NPQS Emphasis “Agreed” with steering committee, the group is to address technical correctnessEmphasis “Agreed” with steering committee, the group is to address technical correctness

    43. Architectural Specifications Structure A.                     Architecture A1 FAÇADE A2 ROOFING A3 EXTERNAL WORKS A4 INTERNAL APPLIED FINISHES A5 INTERNAL PARTITIONS A6 DOOR SYSTEMS A7 FIXTURES AND FITTINGS I took these from section 2.2 and 2.3 of the report. It is probably worth describing what a true performance spec is, because I suspect the Singapore understanding is different. The technical specifications, importantly, are the qualitative statement of the design requirements. There are really 3 principal forms of specification. - Prescriptive is the traditional form and is commonly used here in Singapore. In this form the materials and workmanship are described in some detail. - Performance specs are a more recent development. They set out the required end performance and the means by which this can be assessed. The skill and experience of the specialist are used to determine how best to achieve the required performance or results [more in ICIS paper] There are four aspects in the definition that are essential to the meaning of performance specifying: - required results indicate that all desired criteria must be identified, - meeting stipulated criteria indicates that characteristics or attributes must be chosen and criteria established to fully define expected performance, - verifiable indicates that the product or system must be capable of measurement, test, evaluation, and assurance that it will meet stipulated criteria, and - free from unnecessary process limitations indicated that only essential restrictions should be placed upon the product or system. - Nomination is commonly used for a particular product or system.I took these from section 2.2 and 2.3 of the report. It is probably worth describing what a true performance spec is, because I suspect the Singapore understanding is different. The technical specifications, importantly, are the qualitative statement of the design requirements. There are really 3 principal forms of specification. - Prescriptive is the traditional form and is commonly used here in Singapore. In this form the materials and workmanship are described in some detail. - Performance specs are a more recent development. They set out the required end performance and the means by which this can be assessed. The skill and experience of the specialist are used to determine how best to achieve the required performance or results [more in ICIS paper] There are four aspects in the definition that are essential to the meaning of performance specifying: - required results indicate that all desired criteria must be identified, - meeting stipulated criteria indicates that characteristics or attributes must be chosen and criteria established to fully define expected performance, - verifiable indicates that the product or system must be capable of measurement, test, evaluation, and assurance that it will meet stipulated criteria, and - free from unnecessary process limitations indicated that only essential restrictions should be placed upon the product or system. - Nomination is commonly used for a particular product or system.

    44. Architectural Specifications Structure A.                     Architecture A1                            A1 FAÇADE A1-10      Curtain Wall A1-20      Windows A1-30      Screens and Louvres A1-40      Metal Cladding A1-50      Precast Concrete Cladding (Architectural) A1-60      Stone Cladding A1-70      External Masonry A1-80      Applied External Finishes A1-80-1           External Render A1-80-2           External Tiling A1-80-3           External Painting & Coating A1-90      Glazed Roof and Canopies I took these from section 2.2 and 2.3 of the report. It is probably worth describing what a true performance spec is, because I suspect the Singapore understanding is different. The technical specifications, importantly, are the qualitative statement of the design requirements. There are really 3 principal forms of specification. - Prescriptive is the traditional form and is commonly used here in Singapore. In this form the materials and workmanship are described in some detail. - Performance specs are a more recent development. They set out the required end performance and the means by which this can be assessed. The skill and experience of the specialist are used to determine how best to achieve the required performance or results [more in ICIS paper] There are four aspects in the definition that are essential to the meaning of performance specifying: - required results indicate that all desired criteria must be identified, - meeting stipulated criteria indicates that characteristics or attributes must be chosen and criteria established to fully define expected performance, - verifiable indicates that the product or system must be capable of measurement, test, evaluation, and assurance that it will meet stipulated criteria, and - free from unnecessary process limitations indicated that only essential restrictions should be placed upon the product or system. - Nomination is commonly used for a particular product or system.I took these from section 2.2 and 2.3 of the report. It is probably worth describing what a true performance spec is, because I suspect the Singapore understanding is different. The technical specifications, importantly, are the qualitative statement of the design requirements. There are really 3 principal forms of specification. - Prescriptive is the traditional form and is commonly used here in Singapore. In this form the materials and workmanship are described in some detail. - Performance specs are a more recent development. They set out the required end performance and the means by which this can be assessed. The skill and experience of the specialist are used to determine how best to achieve the required performance or results [more in ICIS paper] There are four aspects in the definition that are essential to the meaning of performance specifying: - required results indicate that all desired criteria must be identified, - meeting stipulated criteria indicates that characteristics or attributes must be chosen and criteria established to fully define expected performance, - verifiable indicates that the product or system must be capable of measurement, test, evaluation, and assurance that it will meet stipulated criteria, and - free from unnecessary process limitations indicated that only essential restrictions should be placed upon the product or system. - Nomination is commonly used for a particular product or system.

    45. Architectural Specification Structure (con’d) A2 ROOFING A2-10      Metal Roof A2-20      Tiled Roofs A2-30      Applied Finishing for Flat Roofs A2-40      Skylights

    46. Architectural Specification Structure (con’d) A3          EXTERNAL WORKS A3-10      Hardscape A3-20      Pool Finishes A3-30      Softscape A3-40      External Metalwork A3-50      External Timberworks

    47. Architectural Specification Structure A4           INTERNAL APPLIED FINISHES A4-10      Internal Plaster & Render A4-20      Internal Paint and Coatings A4-30      Floor screed and hardeners A4-40      Internal Tiling A4-50      Timber Flooring A4-60      Sheet Flooring A4-70      Carpets A4-80      Suspended Ceilings A4-90      Raised Floor A4-100   Internal waterproofing

    48. Architectural Specification Structure A5          INTERNAL PARTITIONS A5-10      Dry Partitions A5-20      Internal Masonry A5-30      Glass Partitions

    49. Architectural Specification Structure A6           DOOR SYSTEMS A6-10      Internal Doors A6-20      External Doors A6-30      Roller Shutters

    50. Architectural Specification Structure A7           FITTINGS & FIXTURES Fixtures & Fittings

    51. Specification Structure and Drafting Protocol 5 Main Standard Sections (Reference only) 1.0 General 2.0 Performance Requirements 3.0 Materials 4.0 Workmanship 5.0 Verification and Testing PSD – Project Specific Data Format to accommodate our approach and provide flexibility for future modificationsFormat to accommodate our approach and provide flexibility for future modifications

    52. Specification Structure and Drafting Protocol 1.0 GENERAL : 1.1 Scope: Define what is covered in the section 1.2 Related sections: Define what else in the package 1.3 Standards : What all contractors should refer to 1.4 Trade Preliminaries : Tasks other than the subject construction works 1.5 Definitions/Abbreviations. 2.0 PERFORMANCE REQUIREMENT: Defines the results desired from participation by the contractors. 3.0 MATERIAL/COMPONENTS: Define quality required when delivered to site 4.0 WORKMANSHIP: Define good practice putting the works together and quality of the final product 5.0 VERIFICATION/SUBMISSION : Define what needs to be done to verify the achievement of specified quality. Format to accommodate our approach and provide flexibility for future modificationsFormat to accommodate our approach and provide flexibility for future modifications

    55. Applied Roof Finishes 1. GENERAL Read with the General Requirement section, general preliminaries and all other contract conditions. 1.1 Scope This section covers the general requirements for applied finishes for flat roofs, including various combinations of: a. Waterproofing, b. Insulation and, c. Surfacing

    57. 2. PERFORMANCE REQUIREMENTS 2.1 Contractor’s Brief When carrying out the proposals as set out in clause 1.4.1, take account of the following requirements: 2.1.1 Structural 2.1.1.1 Dead Loads The self-weight and other associated dead loads of the complete applied finishes system shall not exceed the assumed design value as indicated in the PSD. 2.1.1.2 Live Loads Unless otherwise specified, account for the Live Loads as stipulated in the Building Control Regulations, and additional requirements of other statutory authorities having jurisdiction over the works if any. 2.1.1.3 Wind Loads Account for wind loads computed based on BS CP 3 with a basic wind speed of 35 m/s. 2.1.1.4 Thermal Stress and Structural Movement Account for all thermal stress and other structural movement.

    59. 3.4 Waterproofing Systems: Membranes 3.4.1 Liquid Membranes 3.4.1.1 Water Based Water based liquid membrane to comply with SS 374 unless otherwise agreed. 3.4.1.2 Polyurethane Polyurethane liquid membranes to comply with SS 133.

    60. 3.7 Waterproofing Systems: Primers and Bonding Compounds 3.7.1 Primer Primer shall be proprietary type, compatible with the membrane used and recommended for the intended purpose by the membrane manufacturer, to SO’s acceptance. 3.7.2 Bonding Compounds Unless otherwise agreed, use oxidised bitumen as recommended by the membrane manufacturer for the conditions and type of surface. 3.7.3 Bonding Compounds for Insulation Use cold bonding bituminous adhesive, complying with SS 133 and recommended by the insulation manufacturer.

    62. WORKMANSHIP 4.1 General Workmanship Requirements 4.1.1 Proposed Methods Carry out the works in accordance with the proposed methods as accepted by the SO. Ensure construction will achieve the design as set out in the approved shop and installation drawings. 4.1.2 Co-ordination and Setting Out Co-ordinate the roofing works with all interfacing works packages and trades to ensure correct setting out and positioning of all penetrations, attachments, and other constituent materials and elements. 4.1.3 Handling and Hoisting Handle and hoist assemblies carefully, at all stages to ensure that sections and finishes are not damaged, and in accordance with manufacturer’s recommendations.

    63. 4.3.2.2 Polyurethane Apply the Polyurethane liquid membrane onto all prepared and primed surfaces to be waterproofed, using roller, spray, brush, trowel, or squeegee, in accordance with the following product specific requirements. a. Minimum number of coats required b. WFT per Coat c. Drying time between coats d. Minimum total DFT e. Tile-over time (after final coat) Protect the final coating of the membrane by applying a proprietary recommended protection course and or material(s), directly over the membrane. Use a proprietary recommended adhesive if tiles are to be directly bonded to the membrane. Lay a proprietary recommended slip sheet over the entire membrane surface if the protection course is a RC topping slab.

    65. 5.1.2 Method Statements Prior to commencing construction work, submit a detailed method statement to SO’s acceptance. Include at least the following information: a. Sequence of Construction b. Application of proposed waterproofing system c. Means of accommodating thermal movement d. Means of accommodating thermal performance requirement e. Repair of common damaged and faulty works f. Installation of fall arrest and lightning protection systems 5.1.3 Installation Drawings Prepare installation drawings, particularly include: 5.1.3.1 Typical and Non-Typical Details Sectional details of the finishing system and associated components including: a. Composition of the proposed roof finishing system b. Flashing at upstands c. Interfaces with adjoining structure and / or other cladding elements

    66. 5.1.5 Maintenance Manual Submit maintenance/ replacement manual at the completion of the construction. Include the following information in the maintenance manual and logbook. a. An outline description of the completed roof finishing system b. A detailed description of specific materials and components with product names, types, serial numbers, etc. c. Recommendation on maintenance periods and planned preventive maintenance procedures 5.1.6 Warranty Submit the warranty for SO acceptance upon completion of the works. 5.1.7 Quality Plan Submission Prepare and submit a quality plan for SO acceptance prior to starting of fabrication work.

    67. Production of Specifications Review of Specifications Completed NPQS Format fixed Mid-2002 Specifications Structure of Specifications Arup to draft technical content. Follow Structure Follow Drafting protocols Format to accommodate our approach and provide flexibility for future modificationsFormat to accommodate our approach and provide flexibility for future modifications

    68. Production of Specifications Draft Specifications Reviewed Overarching Review by Working Group Detail Review by DE – Domain Experts ie. Nominated specialists for each specification section Format to accommodate our approach and provide flexibility for future modificationsFormat to accommodate our approach and provide flexibility for future modifications

    69. Production of Specifications Public Review Now to 8th August 2003 Structure, framework and list specifications fixed Comment on technical content Must be on Standard Form Format to accommodate our approach and provide flexibility for future modificationsFormat to accommodate our approach and provide flexibility for future modifications

    70. WHAT are we doing and what is our goal?WHAT are we doing and what is our goal?

    71. Production of Specifications Public Review Specifications on SIA Web-site Download @ http://www.sia.org.sg/sia/npqs Standard Form: Excel Sheet available on SIA Website E-mail to :npqs@sia.org.sg Format to accommodate our approach and provide flexibility for future modificationsFormat to accommodate our approach and provide flexibility for future modifications

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