BS 6229-2003 Flat roofs with continuously supported coverings - Code of practice《有连续支撑屋面层的平屋顶 实用规范》.pdf

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1、BRITISH STANDARD BS 6229:2003 Flat roofs with continuously supported coverings Code of practice ICS 91.060.20 BS 6229:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 26 March 2003 BSI 26 March 2003 First edition December 1982 Second edit

2、ion March 2003 The following BSI references relate to the work on this British Standard: Committee reference B/209/1 Draft for comment 00/105250 DC ISBN 0 580 41305 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee B/209,

3、 General building codes, to Subcommittee B/209/1, Flat roofs, upon which the following bodies were represented: Association of Building Component Manufacturers (ABCM) Association of British Roofing Felt Manufacturers (ABRFM) Aluminium Federation BRE Certification BRE/LPC Laboratories Building Resear

4、ch Establishment (BRE) British Rigid Urethane Foam Manufacturers Association (BRUFMA) Copper Development Association (CDA) Cork Industry Federation Eurisol (UK Mineral Wood Association) European Liquid Roofing Association (ELRA) Flat Roofing Alliance Contractors (FRA) Flat Roofing Alliance Manufactu

5、rers (FRA) Institute of Structural Engineers Lead Sheet Association (LSA) Local Authority Organizations Mastic Asphalt Council Ltd. (MAC) National Federation of Roofing Contractors (NFRC) Royal Institute of British Architects (RIBA) Scottish Office (Construction and Building) Single Ply Roofing Asso

6、ciation (SPRA) Thermal Insulation Manufacturers and Suppliers Association (TIMSA) Wood Panel Industries Federation (WPIF) Amendments issued since publication Amd. No. Date CommentsBS 6229:2003 BSI 26 March 2003 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Norm

7、ative references 1 3T e r m s a n d d e f i n i t i o n s 4 4 Types of flat roof 5 5 Materials and components 8 6 General design considerations 11 7 Falls and drainage 12 8 Structural design 14 9T h e r m a l d e s i g n 1 7 10 Control of condensation 19 11 Sound insulation 21 12 Fire precautions 22

8、 13 Surface protection 24 14 Rooflighting 24 15 Roof plant, equipment and fixtures 26 16 Security 27 17 Durability of roof coverings 27 18 Maintenance and repair 27 19 Refurbishment and renewal 27 20 Safety 27 Annex A (informative) Control of condensation in warm and inverted roofs 28 Annex B (norma

9、tive) Maintenance 30 Annex C (normative) Refurbishment and renewal 31 Annex D (informative) Construction (Design and Management) (CDM) Regulations 1994 32 Bibliography 35 Figure 1 Typical warm roof construction 5 Figure 2 Typical inverted roof 6 Figure 3 Typical cold roof construction 7 Table 1 Mate

10、rials for roof coverings 8 Table 2 Structural deck materials 9 Table 3 Sc reed materials 10 Table 4 Thermal insulation materials 10 Table 5 Vapour control layers 11 Table 6 Minimum finished falls 13 Table 7 Approximate thermal and moisture movements of certain structural deck materials 15 Table 8 Ap

11、proximate sound insulation values for typical flat roofs 21 Table A.1 Outdoor notional psychrometric conditions for flat roof design 29 Table A.2 Notional indoor psychrometric conditions for flat roof design 29BS 6229:2003 ii BSI 26 March 2003 Foreword This British Standard code of practice has been

12、 prepared by Technical Committee B/209/1. It supersedes BS 6229:1982, which is withdrawn. This code of practice deals with the overall principles of design and application of flat roofs with continuously supported roof coverings. A flat roof is defined as having a pitch not greater than 10 to the ho

13、rizontal. Where the particular use of individual materials or forms of construction is covered by other, specific codes of practice, detailed reference should additionally be made to the normative references in Clause 2. Since publication of the first edition of this code of practice (1982), many ch

14、anges have taken place in the functional requirements for buildings, in the performance capability of many roofing materials and in some aspects of building practice. The original code of practice has, therefore, undergone a comprehensive review and updating. Extensive guidance on the analysis of co

15、ndensation risks in flat roof construction was given in the first edition of this code of practice. Guidance on the methodology of condensation risk analysis is now covered by BS 5250. Specific guidance on criteria and assumptions that are relevant to flat roof construction are retained in this revi

16、sion of this code of practice. The 1982 edition of this British Standard dealt with both design and workmanship. Workmanship is now covered by BS 8000-2.2, -3, -4, -5, and -9. As a code of practice, this British Standard takes the form of guidance and recommendations. It should not be quoted as if i

17、t were a specification and particular care should be taken to ensure that claims of compliance are not misleading. NOTE It has been assumed in the drafting of this code of practice that the design and construction of flat roofs is entrusted to appropriately qualified and competent people. It has als

18、o been assumed that the building owner will adopt the recommendations in respect of planned inspection and maintenance of a roof during service. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with

19、 a British Standard does not of itself confer immunity from legal obligations. Attention is drawn to the following statutory regulations relating to construction safety (see also Clause 20): The Construction (General Provisions) Regulations 1961 1, The Construction (Lifting Operations) Regulations 1

20、998 2, The Construction (Notice of Accident, etc.) Orders 1964 3, The Construction (Working Places) Regulations 1966 4, The Construction (Health, Safety and Welfare) Regulations 1996 5, Health and Safety at Work etc. Act 1974 6. Summary of pages This document comprises a front cover, an inside front

21、 cover, pages i and ii, pages 1 to 37 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.BS 6229:2003 BSI 26 March 2003 1 1 Scope This code of practice gives recommendations on the design and application of flat roofs with continuously s

22、upported roof coverings. It covers weathertightness, drainage, thermal design, sound insulation, condensation control, structural support, fire precautions, maintenance and repair. The recommendations are applicable to terraces, podia, parking decks and green/garden roofs; however these particular t

23、ypes of roof also require consideration of additional factors, beyond the scope of this code of practice. This code of practice is applicable to roof coverings at a pitch not greater than 10 to the horizontal. NOTE Provided that the design conditions are similar, the recommendations given in this co

24、de may also be applied to roofs with slopes greater than 10 , but for steep roofs many of the recommendations may not apply. This code of practice does not apply to roofs with self-supporting coverings, cold stores and high temperature enclosures, or to slated or tiled roofs. 2 Normative references

25、The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. BS 476-3:1958 (document withdrawn), Fire tests on

26、 building materials and structures Part 3: External fire exposure roof test. See BS 5427-1:1996, Code of practice for the use of profiled sheet for roof and wall cladding on buildings Part 1: Design. 1)BS 476-6, Fire tests on building materials and structures Part 6: Method of test for fire propagat

27、ion for products. BS 476-7, Fire tests on building materials and structures Part 7: Method of test to determine the classification of the surface spread of flame of products. BS 476-21, Fire tests on building materials and structures Part 21: Methods for determination of the fire resistance of load-

28、bearing elements of construction. BS 747, Reinforced bitumen sheets for roofing Specification. BS 882-2, Specification for aggregates from natural sources for concrete. BS 1105, Specification for wood wool cement slabs up to 125 mm thick. BS 2782-1, Methods of testing plastics Part 1: Thermal proper

29、ties. BS 3797, Specification for lightweight aggregates for structural concrete. BS 3837-1, Expanded polystyrene boards Part 1: Specification for boards manufactured from expandable beads. BS 3837-2, Expanded polystyrene boards Part 2: Specification for extruded polystyrene boards (XPS). BS 3927, Sp

30、ecification for rigid phenolic foam (PF) for thermal insulation in the form of slabs and profiled sections. BS 3958-5, Thermal insulating materials Part 5: Specification for bonded man-made mineral fibre slabs. BS 4841-3, Rigid polyurethane (PUR) and polyisocyanurate (PIR) foam for building applicat

31、ions Part 3: Specification for roofboards. BS 5241-1, Rigid polyurethane (PUR) and polyisocyanurate (PIR) foam when dispensed or sprayed on a construction site Part 1: Specification for sprayed foam thermal insulation applied externally. BS 5250, Code of practice for control of condensation in build

32、ings. BS 5268-2, Structural use of timber Part 2: Code of practice for permissible stress design, materials and workmanship. BS 5268-5, Structural use of timber Part 5: Code of practice for the preservative treatment of structural timber. 1)A review of DD ENV 1187:2002, Test methods for external fir

33、e exposure to roofs, will be initiated after 2 years and once completed will supersede the BS 476-3:1958 test given in BS 5427-1:1996, Annex E. BS 6229:2003 2 BSI 26 March 2003 BS 5268-7.2, Structural use of timber Part 7: Recommendations for the calculation basis for span tables Section 7.2: Joists

34、 for flat roofs. BS 5427-1:1996, Code of practice for the use of profiled sheet for roof and wall cladding on buildings Part 1: Design. BS 5588 (all parts), Fire precautions in the design, construction and use of buildings. BS 5720, Code of practice for mechanical ventilation and air conditioning in

35、 buildings. BS 5925, Code of practice for design of buildings Ventilation principles and designing for natural ventilation. BS 5950-6, Structural use of steelwork in building Part 6: Code of practice for design of light gauge profiled steel sheeting. BS 6100-1.3.2, Glossary of building and civil eng

36、ineering terms Part 1: General and miscellaneous Section 1.3: Parts of construction works Subsection 1.3.2: Roofs and roofing. BS 6180, Barriers in and about buildings Code of practice. BS 6399-1, Loading for buildings Part 1: Code of practice for dead and imposed loads. BS 6399-2, Loading for build

37、ings Part 2: Code of practice for wind loads. BS 6399-3, Loading for buildings Part 3: Code of practice for imposed roof loads. BS 6651, Code of practice for protection of structures against lightning. BS 6915, Design and construction of fully supported lead sheet roof and wall coverings Code of pra

38、ctice. BS 6925, Specification for mastic asphalt for building and civil engineering (limestone aggregate). BS 7021, Code of practice for thermal insulation of roofs externally by means of sprayed rigid polyurethane (PUR) or polyisocyanurate (PIR) foam. BS 7916, Code of practice for the selection and

39、 application of particleboard, oriented strand board (OSB), cement bonded particleboard and wood fibreboards for specific purposes. BS 8110 (all parts), Structural use of concrete. BS 8118-1, Structural use of aluminium Part 1: Code of practice for design. BS 8118-2, Structural use of aluminium Part

40、 2: Specification for materials, workmanship and protection. BS 8204-1, Screeds, bases and in-situ floorings Part 1: Concrete bases and cement sand levelling screeds to receive floorings Code of practice. BS 8206-2, Lighting for buildings Part 2: Code of practice for daylighting. BS 8217, Code of pr

41、actice for built-up felt roofing. BS 8218, Code of practice for mastic asphalt roofing. BS 8220-1, Guide for security of buildings against crime Part 1: Dwellings. BS 8220-2, Guide for security of buildings against crime Part 2: Offices and shops. BS 8220-3, Guide for security of buildings against c

42、rime Part 3: Warehouses and distribution units. BS 8233, Sound insulation and noise reduction for buildings Code of practice. BS 8290-1, Suspended ceilings Part 1: Code of practice for design. CP 143-5, Code of practice for sheet roof and wall coverings Part 5: Zinc. CP 143-12, Code of practice for

43、sheet roof and wall coverings Part 12: Copper: Metric units. CP 143-15, Code of practice for sheet roof and wall coverings Part 15: Aluminium: Metric units. BS EN 300, Oriented strand boards (OSB) Definitions, classification and specifications. BS EN 312-5, Particleboards Specifications Part 5: Requ

44、irements for load-bearing boards for use in humid conditions. BS EN 312-7, Particleboards Specifications Part 7: Requirements for heavy-duty load-bearing boards for use in humid conditions. BS EN 314-2, Plywood Bonding quality Part 2: Requirements.BS 6229:2003 BSI 26 March 2003 3 BS EN 336, Structur

45、al timber Coniferous and poplar Sizes Permissible deviations. BS EN 485 (all parts), Aluminium and aluminium alloys Sheet, strip and plate. BS EN 501, Roofing products from metal sheet Specifications for fully supported roofing products of zinc sheet. BS EN 502, Roofing products from metal sheet Spe

46、cification for fully supported roofing products of stainless steel sheet. BS EN 504, Roofing products from metal sheet Specification for fully supported roofing products of copper sheet. BS EN 507, Roofing products from metal sheet Specification for fully supported roofing products of aluminium shee

47、t. BS EN 622-4, Fibreboards Specifications Part 4: Requirements for softboards. BS EN 634-2, Cement-bonded particle boards Specification Part 2: Requirements for OPC bonded particleboards for use in dry, humid and exterior conditions. BS EN 636-2, Plywood Specifications Part 2: Requirements for plyw

48、ood for use in humid conditions. BS EN 636-3, Plywood Specifications Part 3: Requirements for plywood for use in exterior conditions. BS EN 1172, Copper and copper alloys Sheet and strip for building purposes. BS EN 1313-1, Specification for sizes of sawn and processed Part 1: Softwood. BS EN 10258,

49、 Cold-rolled stainless steel narrow strip and cut lengths Tolerances on dimensions and shape. BS EN 12056-3, Gravity drainage systems inside buildings Part 3: Roof drainage, layout and calculation. BS EN 12524, Building materials and products Hygrothermal properties Tabulated design values. BS EN 12588, Lead and lead alloys Roll