1、BRITISH STANDARD BS 4868:1972 Specification for Profiled aluminium sheet for buildingBS4868:1972 This British Standard, having been approved by the Non-ferrousMetals IndustryStandards Committee,waspublished underthe authorityof the Executive Boardon 31July1972 BSI 09-1999 The following BSI reference
2、s relate to the work on this standard: Committee reference NFE/26 Draft for comment 69/26498 ISBN 0 580 07235 5 Co-operating organizations The Non-ferrous Metals Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives of the following Gov
3、ernment departments and scientific and industrial organizations: Aluminium Federation* Association of Bronze and Brass Founders British Bronze and Brass Ingot Manufacturers Association British Electrical and Allied Manufacturers Association British Lead Manufacturers Association British Non-ferrous
4、Metals Federation British Non-ferrous Metals Federation High Conductivity Copper Group British Non-ferrous Metals Research Association Copper Development Association Department of Trade and Industry (Marine Division) Electric Cable Makers Confederation Institute of British Foundrymen Institute of Me
5、tals Institution of Mechanical Engineers (Automobile Division) Institution of Mining and Metallurgy Institution of Production Engineers Institution of Structural Engineers* Lead Development Association Light Metal Founders Association London Metal Exchange Magnesium Industry Council Ministry of Defe
6、nce, Army Department Ministry of Defence, Navy Department National Brassfoundry Association Non-ferrous metal stockists Post Office Royal Institute of British Architects Society of Motor Manufacturers and Traders Ltd. Tin Research Institute Zinc Development Association Individual manufacturers The s
7、cientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: Incorporated Association of Architects and Surveyors Institution of Civil Engineers Insti
8、tution of Municipal Engineers Ministry of Agriculture, Fisheries and Food Amendments issued since publication Amd. No. Date of issue CommentsBS4868:1972 BSI 09-1999 i Contents Page Co-operating organizations Inside front cover Foreword ii 1 Scope 1 2 Material 1 3 Profiles 1 4 Dimensions and toleranc
9、es 2 5 Freedom from defects 3 6 Finish 3 7 Certificate of compliance 3 Appendix A Summary of chemical compositions and mechanical properties 4 Appendix B Cover widths for Type S sheet 4 Figure 1 Corrugated Type S (sinusoidal) 1 Figure 2 Type A (asymmetrical trapezoidal) 1 Figure 3 Type B (symmetrica
10、l trapezoidal) 2 Publications referred to Inside back coverBS4868:1972 ii BSI 09-1999 Foreword This British Standard includes both the corrugated and troughed aluminium sheet previously covered by BS2855 and BS3428 and supersedes those specifications. The dimensions of the sheets are now expressed i
11、n metric terms and tolerances have been included. Fixing accessories for use with these sheets are covered by BS1494 “Fixing accessories for building purposes”, Part1: “Fixing for sheet, roof and wall coverings”, and the relevant Code of Practice is CP143, “Sheet roof and wall coverings”, Part9: “Al
12、uminium, corrugated and troughed (for pitched roofing and vertical cladding)”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself co
13、nfer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated i
14、n the amendment table on the inside front cover.BS4868:1972 BSI 09-1999 1 1 Scope This British Standard specifies requirements for material, profile, dimensions (including tolerances) and finish for profiled aluminium sheet for building. NOTEThe titles of the British Standards referred to in this st
15、andard are listed on the inside back cover. 2 Material The sheets when manufactured shall be of aluminium alloy: BS1470NS3-H8 BS4300-6NS31-H6 3 Profiles The sheets shall be in any of the three profiles shown in Figure 1, Figure 2 or Figure 3. The corrugations and troughs shall be parallel in directi
16、on with the sides. Figure 1 Corrugated Type S (sinusoidal) Figure 2 Type A (asymmetrical trapezoidal)BS4868:1972 2 BSI 09-1999 4 Dimensions and tolerances The sheet shall comply with the following dimensions and tolerances, except in the instance of embossed or painted sheet when the tolerances shal
17、l be the subject of agreement between the manufacturer and the purchaser. 4.1 Thicknesses (For chemical composition and mechanical properties, seeAppendix A.) 4.2 Tolerances on thickness applicable to the above 4.3 Tolerances on pitch accumulative pitch 4.4 Edge tail 4.5 Depth of corrugations The ra
18、dii of bends forming the Type A and B troughs shall be not more than9mm. Figure 3 Type B (symmetrical trapezoidal) Type S sheet 0.5mm to1.0mm inclusive Type A sheet 0.7mm and0.9mm Type B sheet 1.0mm and1.2mm Thickness of sheet Type S sheet up to 10mm76mm corrugations Type A and Type B sheet up to an
19、d including5troughs Type S sheet over 10to14 76mm corrugations Type A and Type B sheet over5 and including8troughs mm 0.5 0.6 0.7 0.9 1.0 1.2 mm + 0.05 0.06 0.07 0.08 0.08 0.08 mm + 0.07 0.07 0.08 0.09 0.09 0.09 Type S sheet up to and including10 corrugations 76.2mm 5mm Over10 corrugations 76.2mm 6m
20、m Type A or Type B sheet with up to8 troughs 6mm Types A and B sheet only 12mm minimum Type S, Type A or B sheet 1.6mmBS4868:1972 BSI 09-1999 3 4.6 Tolerances on length 4.7 Tolerance on squareness The length of the diagonals between opposite corners of any sheet shall not differ by more than20mm. 5
21、Freedom from defects The sheets shall be clean and free from harmful defects prejudicial to their use. 6 Finish The finish shall be “as rolled” unless an alternative surface finish has been agreed between the supplier and the purchaser. 7 Certificate of compliance The supplier shall, if required, ce
22、rtify that the sheets comply with the requirements of this standard. Lengths up to and including3500mm 7.0mm For longer lengths, the tolerance increases by 0.5mm for each 1000mm or part ofa1000mmBS4868:1972 4 BSI 09-1999 Appendix A Summary of chemical compositions and mechanical properties Appendix
23、B Cover widths for Type S sheet Element Specification BS1470-6NS3-H8 Specification BS4300-6NS31-H6 Aluminium Copper Magnesium Silicon Iron Manganese Zinc Chromium Chromium and titanium and/or other grain refining elements Titanium and/or other grain refining elements % Remainder 0.1max. 0.1max. 0.6m
24、ax. 0.7max. 0.8/1.5 0.2max. 0.2max. % Remainder 0.25max. 0.30/0.60 0.25max. 0.7max. 0.4/1.1 0.2max. 0.10max. 0.2max. Tensile strength 175N/mm 2min. 185N/mm 2 min. Cover widths 1 corrugation lap 1“ corrugation lap 2 corrugation lap 8 3 10 3 12 3 Min. mm 605 757 908 Work size mm 610 762 914 Max. mm 61
25、5 767 920 Min. mm 567 719 870 Work size mm 572 724 876 Max. mm 577 729 882 Min. mm 528 681 832 Work size mm 533 686 838 Max. mm 538 691 844BS4868:1972 BSI 09-1999 Publications referred to This standard makes reference to the following British Standards: BS1470, Wrought aluminium and aluminium alloys
26、. Plate, sheet and strip. BS4300-6, NS31 Sheet and strip. BS4868:1972 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level
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