1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS 6767-1:1999 ICS 91.040
2、.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Transportable accommodation units Part 1: Recommendations for design and construction of the basic unitThis British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Committee, wa
3、s published under the authority of the Standards Committee and comes into effect on 15 October 1999 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference B/511 Draft for comment 98/103986 DC ISBN 0 580 33043 5 BS 6767-1:1999 Amendments issued since publica
4、tion Amd. No. Date Comments Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee B/511, Buildings mobile and temporary, upon which the following bodies were represented: British Holiday and Home Parks Association Limited Campi
5、ng and Caravanning Club Ltd. Caravan Club Chief and Assistant Chief Fire Officers Association Consumer Policy Committee of BSI Department of the Environment, Transport and the Regions (Central Transport Group) Institution of Electrical Engineers LP Gas Association National Caravan Council Limited Na
6、tional Prefabricated Building Association Ltd. Society of Motor Manufacturers and Traders LimitedBS 6767-1:1999 BSI 10-1999 i Contents Page Committees responsible Inside front cover Foreword ii Introduction 1 1 Scope 1 2 Normative references 1 3 Terms and definitions 2 4 Types 2 5 Sizes 2 6 Structur
7、e 3 7 External construction 3 8 Internal finishes 3 9 Roofing 3 10 Glazing 3 11 Natural lighting 3 12 Ventilation 3 13 Means of escape 4 14 Maximum mass for handling 4 15 Lifting points 4 16 Anchor ties 4 17 Roof drainage 4 18 Avoidance of decay 4 19 Avoidance of corrosion 4 20 Thermal insulation 4
8、21 Decoration 4 22 Mechanical and electrical services 4 23 Special considerations for leg-mounted units 4 24 Special considerations for platform-mounted units 5 25 Special considerations for skid-mounted units 5 26 Special considerations for wheeled units 5 27 Manufacturers certificate 5 28 Marking
9、5 29 Userss handbook 5 Bibliography 6ii BSI 10-1999 BS 6767-1:1999 Foreword This part of BS 6767 has been prepared by Technical Committee B/511. It supersedes BS 6767-1:1992 which is withdrawn. This revision of part 1 has been prepared to reflect updates in legislation, regulations, standards and sa
10、fety provisions. A British Standard does not purport to include all the necessary provisons of a contract. Users of British Standards are responsible for their application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document co
11、mprises a front cover, an inside front cover, pages i and ii, pages 1 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. BSI 10-1999 1 BS 6767-1:1999 Introduction Modern transportable accommodation units devel
12、oped as an alternative to huts and sectional buildings. Their specification and structural performance, installation and range of sizes, make them particularly suitable for a wide number of applications. Relocatable and transportable accommodation units are delivered ready for immediate use. Units w
13、ithout wheels can either be craned, fork-lifted or winched into position or off-loaded from a flat-bed truck by one person using a telescopic jack-leg system. They can be linked end to end, side by side or end to side, or stacked to form a two or more storey structure. Since the 1960s, transportable
14、 accommodation units have been manufactured in large numbers under factory-controlled conditions. The volume and diversity of their manufacture has made it desirable to standardize the basic unit. This part of BS 6767 gives recommendations for design and construction of a basic unit. BS 6767-2 gives
15、 recommendations for design and installation of services and fittings with guidance on the necessary fire precautions, transportation, handling and siting. Safety matters have been given a high priority. In addition, recommendations on providing information to ensure correct unit identification, han
16、dling and siting, on the manufacturers certificate and also to be marked on the unit itself, have been included. Conformity with appropriate legislation depends upon the size and end-use of a unit. Some units are designated as permanent buildings and therefore need to conform to the appropriate buil
17、ding regulations applicable in England and Wales, Scotland and Northern Ireland. This part of BS 6767 gives recommendations for the safe use and other technical performance aspects of land-based transportable accommodation units classified as “exempt buildings” in the building regulations. It has be
18、en assumed in the drafting of this standard that the execution of its recommendations and provisions is entrusted to appropriately qualified and experienced people. In particular attention is drawn to: Building Regulations, 1991 1; Building Standards (Scotland) Regulations, 1990 2; Building Regulati
19、ons (Northern Ireland), 1994 3; Telecommunications Act, 1984 4; Chronically Sick and Disabled Persons Act, 1976 5; Clean Air Acts, 1956 to 1993 6; Consumer Protection Act, 1987 7; Education Act, 1993 8; Factories Act, 1961 9; Fire Precautions (Workplace) Regulations, 1997 10; Fire Precautions Act, 1
20、971 11; Gas Act, 1995 12; Health and Safety at Work etc. Act, 1974 13; Local Government (Miscellaneous Provisions Act), 1982 14; Offices, Shops and Railway Premises Act, 1963 15; Petroleum (Consolidation) Act, 1928 16; Planning (Northern Ireland) Order, 1991 17; Residential Homes Act, 1980 18; Road
21、Traffic Act, 1972 19; Town and Country Planning Act, 1990 20; Town and Country Planning (Scotland) Act, 1997 21; 1 Scope This part of BS 6767 gives recommendations for the design and construction of the basic shell of single transportable accommodation units that are “exempt buildings” as defined by
22、 the appropriate building regulations applicable in England and Wales, Scotland and Northern Ireland. The units can be leg-mounted, skid-mounted, wheel-mounted or platform-mounted. Recommendations are also given for certain special considerations applying to some of the individual types. These recom
23、mendations are intended for use by designers and manufacturers of the basic units. Part 2 of this standard gives recommendations on the design and installation of services, and fittings plus guidance on necessary fire precautions and also transportation, handling and siting. 2 Normative references T
24、he following normative documents contain provisions which, through reference in this text, constitute provisions of this part of this British Standard. For dated references, subsequent amendments to, or revision of, any of these publications do not apply. For undated references, the latest edition o
25、f the publication referred to applies. BS 449-2, Specification for the use of structural steel in building Metric units. BS 476-3, Fire tests on building materials and structures. External fire exposure roof test. BS 476-7 Fire tests on building materials and structures. Method of test to determine
26、the classification of the surface spread of flame of products. BS 4800, Schedule of paint colours for building purposes.2 BSI 10-1999 BS 6767-1:1999 BS 5268-2, Structural use of timber Part 2: Code of practice for permissible stress design, materials and workmanship. BS 5493, Code of practice for pr
27、otective coating of iron and steel structures against corrosion. BS 5589:1989, Code of practice for preservation of timber. BS 5639-3, Fork arms for fork lift trucks Part 3: Recommendations for dimensions of fork arms. BS 5950-1, Structural use of steelwork in building. Code of practice for design i
28、n simple and continuous construction: hot rolled sections. BS 5950-5, Structural use of steelwork in building. Code of practice for design of cold formed sections. BS 6262, Code of practice for glazing for buildings. BS 6375-1, Performance of windows Part 1: Classification for weathertightness (incl
29、uding guidance on selection and specification). BS 6399-1, Loadings for buildings. Code of practice for dead and imposed loads. BS 6399-2, Loadings for buildings. Code of practice for wind loads. BS 6399-3, Loadings for buildings. Code of practice for imposed roof loads. BS 8118-1, Structural use of
30、 aluminium. Code of practice for design. BS 8118-2, Structural use of aluminium. Specification for materials, workmanship and protection. 3 Terms and definitions For the purposes of this part of BS 6767, the following definitions apply. 3.1 transportable accommodation unit relocatable accommodation,
31、 designed to be transported by road vehicle BS 6100-1:1.5:1.5.5:1991 3.2 leg-mounted transportable accommodation unit transportable accommodation unit with supporting legs, either fixed or telescopic, extending below its underside BS 6100-1:1.5:1.5.5:1991 3.3 platform-mounted transportable accommoda
32、tion unit transportable accommodation unit mounted on a steel frame designed for moving by means of a fork-lift truck 3.4 skid-mounted transportable accommodation unit transportable accommodation unit mounted on skid members of steel, timber or other suitable materials 3.5 wheel-mounted transportabl
33、e accommodation unit transportable accommodation unit mounted on a wheeled chassis and towed from one location to another BS 6100-1:1.5:1.5.5:1991 3.6 formation surface of the ground in its undisturbed state, or in its final shape after completion of earthworks, prior to the construction of any stru
34、cture or foundation works 3.7 linking process of connecting transportable accommodation units 3.8 stacking process of linking vertically to form a two or more storey structure 3.9 basic mass mass of a transportable accommodation unit without partitions, fittings and services 3.10 ex works mass mass
35、of a transportable accommodation unit with partitions, fittings and services 3.11 maximum mass maximum permissible mass of a transportable accommodation unit for handling 4 Types Units should be one of the following types: a) leg-mounted; b) platform-mounted; c) skid-mounted; d) wheel-mounted. 5 Siz
36、es The clear floor-to-ceiling height should be a minimum of 2 100 mm. NOTE Guidance on size restrictions imposed by the need to transport the unit on the public highway is given in BS 6767-2. BSI 10-1999 3 BS 6767-1:1999 6 Structure 6.1 General The structural framework and fabric should be capable o
37、f withstanding all the dead loads and imposed loads, including all horizontal, inclined or uplift forces, described in 6.3 to 6.5. The unit should transmit all such loads safely through the structure and distribute them to the underlying formation. The unit should be capable of withstanding any dyna
38、mic loads that can be encountered during lifting and transportation. 6.2 Materials The structural use of materials should be as recommended for aluminium in BS 8118-1 and BS 8118-2, as recommended for timber as in BS 5268-2 and as specified for steel in BS 449-2, BS 5950-1 and BS 5950-5. 6.3 Floor l
39、oads Floors should be capable of withstanding a uniformly distributed load of 2.5 kN/m 2 or a maximum concentrated load of 2.7 kN/m 2 , whichever produces the greater stress, in accordance with BS 6399-1. Units requiring a greater floor load should also be designed in accordance with BS 6399-1. 6.4
40、Roof loads The roof of the unit should be capable of carrying a uniformly distributed load of 0.75 kN/m 2 or a concentrated load of 0.9 kN/m 2 , whichever produces the greater stress, in accordance with BS 6399-3. 6.5 Wind loads The unit should be capable of withstanding a minimum lateral horizontal
41、 wind force of 0.75 kN/m 2 . There should be an additional allowance for wind uplift of 0.5 kN/m acting over the net exposed area of floor and/or roof overhangs and projections. Further guidance on extremes of wind load is given in BS 6399-2. 7 External construction 7.1 Weather resistance External c
42、ladding and roofing should prevent the penetration of rain and snow. Windows should be classified for watertightness in accordance with BS 6375-1 and should attain the performance required for test pressure class 50 Pa. 7.2 Spread of flame Materials used for the construction of the external cladding
43、 should have surfaces with a spread of flame of class 3 or higher when tested in accordance with BS 476-7. Depending on use and particularly where units are designed to be linked or stacked, consideration should be given to further upgrading the fire performance. Guidance is given in BS 6767-2. 8 In
44、ternal finishes 8.1 Walls and ceilings Materials used for the internal linings of walls and ceilings should have surfaces with a spread of flame of class 3 or higher when tested in accordance with BS 476-7. Finishes based on nitrocellulose should not be used. 8.2 Floors Floors should be finished wit
45、h a covering that is impervious to water and water vapour. 9 Roofing Material used for the roof covering and its supporting deck should have a fire performance classification of P15 or higher when tested in accordance with BS 476-3. 10 Glazing Glazing in doors and windows should be carried out in ac
46、cordance with BS 6262. 11 Natural lighting Where natural lighting is required, each unit should be provided with a total glazed area of not less than 10 % of the total floor area, by means of rooflights, windows or glazed door panels in the external walls. Single glazed windows should incorporate a
47、condensation channel. 12 Ventilation 12.1 Fixed ventilation Fixed ventilation should be provided. The total effective fixed free area of ventilation should be divided equally between opposite sides of the unit at high level and should be either 4 000 mm 2 or 65V mm 2 , whichever is the greater, wher
48、e: V is the numerical value of the internal volume of the unit (in m 3 ). 12.2 Adjustable ventilation Adjustable ventilation should be provided by means of external doors and openable windows to give a total effective free area of ventilation of not less than 5 % of the floor area of the unit. The a
49、rea of ventilation provided by openable windows should be not less than 10 000 mm 2 . Recommendations for additional ventilation when services and heating are installed are given in BS 6767-2. 12.3 Protection of ventilators All permanent openings for ventilation should be designed to give protection against the entry of vermin and against the weather. They should be accessible for cleaning.4 BSI 10-1999 BS 6767-1:1999 13 Means of escape Each unit should be provided with a mean
