BS EN 744 1996
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9F7F9B2C706E4737B5F9DDB4FF2480C2 |
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文件大小(MB)： |
0.23 |
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页数： |
16 |
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日期： |
2013-7-8 |
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文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
BRITISH STANDARD BS EN,744:1996,BS 2782-11:,Method,1108C:1996,Plastics piping and,ducting systems —,Thermoplastics pipes —,Test method for,resistance to,external blows by the,round-the-clock,method,The European Standard EN 744:1995 has the status of a,British Standard,ICS 23.040.20,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Oct 22 00:52:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI,BS EN 744:1996,This British Standard, having,been prepared under the,direction of the Sector Board for,Materials and Chemicals, was,published under the authority,of the Standards Board and,comes into effect on,15 February 1996,. BSI 07-1999,The following BSI references,relate to the work on this,standard:,Committee reference PRI/61,Draft for comment 92/413382 DC,ISBN 0 580 25149 7,Committees responsible for this,British Standard,The preparation of this British Standard was entrusted to Technical,Committee PRI/61, Plastics piping systems and components, upon which the,following bodies were represented:,British Gas plc,British Plastics Federation,British Plumbing Fittings Manufacturers’ Association,British Valve and Actuator Manufacturers’ Association,Department of the Environment (British Board of Agrément),Department of the Environment (Building Research Establishment),Department of the Environment (Property and Building Directorate),Department of Transport,Electricity Association,Federation of Civil Engineering Contractors,Health and Safety Executive,Institute of Building Control,Institute of Materials,Institution of Civil Engineers,Institution of Gas Engineers,Institution of Water and Environmental Management,National Association of Plumbing, Heating and Mechanical Services,Contractors,Pipeline Industries Guild,Plastics Land Drainage Manufacturers’ Association,Society of British Gas Industries,Society of British Water Industries,Water Companies Association,Water Services Association of England and Wales,The following bodies were also represented in the drafting of the standard,through subcommittees and panels:,ERA Technology Ltd.,Engineering Equipment and Materials Users’ Association,RAPRA Technology Ltd.,Amendments issued since publication,Amd. No. Date Comments,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Oct 22 00:52:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI,BS EN 744:1996,. BSI 07-1999 i,Contents,Page,Committees responsible Inside front cover,National foreword ii,Foreword 2,1 Scope 3,2 Definition 3,3 Principle 3,4 Apparatus 3,5 Test pieces 6,6 Conditioning 6,7 Procedure 6,8 Expression of results 7,9 Test report 8,Annex A (informative) Evaluation of results from isolated batches 9,Figure 1 — Typical falling weight testing machine 4,Figure 2 — Dimensions of strikers 5,Figure 3 — Number of test pieces for 10 % TIR (at 90 % confidence level) 8,Table 1 — Dimensions for the nose of the striker 3,Table 2 — Mass of strikers 3,Table 3 — Number of equidistant lines to be drawn on the test pieces 6,Table 4 — Conditioning periods 6,Table 5 — Expression of TIR at 10 % depending on the number of blows,and failures 7,Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Sun Oct 22 00:52:52 GMT+00:00 2006, Uncontrolled Copy, (c) BSI,BS EN 744:1996,ii . BSI 07-1999,National foreword,This British Standard has been prepared by Technical Committee PRI/61 and is,the English language version of EN 744:1995 Plastics piping and ducting,systems — Thermoplastics pipes — Test method for resistance to external blows by,the round-the-clock method, published by the European Committee for,Standardization (CEN).,It is incorporated into BS 2782 Methods of testing plastics —,Part 11: Thermoplastics pipes, fittings and valves, as Method 1108C:1995 for,association with related test methods for plastics materials and plastics piping,components.,This test method has been prepared for reference by other standards under,preparation by CEN for specification of plastics piping systems and components.,It has been implemented to enable experience of the method to be gained, and for,use for other fresh applications.,It is also for use for the revision or amendment of other national standards as,practicable, but it should not be presumed to apply to any existing standard or,specification which contains or makes reference to a different test method until,that standard/specification has been amended or revised to make reference to this,method and adjust any requirements as appropriate. In particular, attention is,drawn to the fact that because of e.g. differences in striker geometry, this,method is not expected to give identical results to those o……
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