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BRITISH STANDARD BS EN 7121995 BS 2782-11 1123H1995 Thermoplastics piping systems End-load bearing mechanical joints between pressure pipes and fittings Test for resistance to pull-out under constant longitudinal force The European Standard EN 7121993 has the status of a British Standard UDC 621.643.4-036621.643.2.06620.172 Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI BS EN 7121995 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 May 1995 BSI 10-1999 The following BSI references relate to the work on this standard Committee reference PRI/61 Draft for comment 92/41352 DC ISBN 0 580 23965 9 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 Agrment Department of the Environment Building Research Establishment Department of the Environment Property and Buildings Directorate Department of Transport Electricity Association Federation of Civil Engineering Contractors Health and Safety cutive 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 this standard, through subcommittees and panels Engineering Equipment and Materials Users’ Association ERA Technology Ltd. RAPRA Technology Ltd. Amendments issued since publication Amd. No.DateComments Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI BS EN 7121995 BSI 10-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 1Scope3 2Principle3 3Apparatus3 4Test piece3 5Procedure3 6Test report3 Figure 1 Diagram of typical apparatus4 Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI BS EN 7121995 ii BSI 10-1999 National foreword This British Standard has been prepared by Technical Committee PRI/61 and is the English language version of EN 7121993 Thermoplastics piping systems End-load bearing mechanical joints between pressure pipes and fittings Test for resistance to pull-out under constant longitudinal force, published by the European Committee for Standardization CEN. It is incorporated into BS 2782 s of testing plastics Part 11 Thermoplastics pipes, fittings and valves, as 1123H1995 for association with related test s for plastics materials and plastics piping components. This test 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 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 until that standard/specification has been amended or revised to make reference to this and adjust any requirements as appropriate. WARNING. This British Standard, which is the English language version of EN 7121993, does not necessarily detail all the precautions necessary to meet the requirements of the Health and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety precautions and the should be operated only by trained personnel. 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 confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 4 and a back cover. This standard has been updated see copyright date and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 712 November 1993 UDC 621.643.4-036621.643.2.06620.172 Descriptors Pipelines, pipes, pressure pipes, plastics pipes, pipe fitting, joint, pull-out, tensile strength, tests English version Thermoplastics piping systems End-load bearing mechanical joints between pressure pipes and fittings Test for resistance to pull-out under constant longitudinal force Systmes de canalisations thermoplastiques Assemblages mcaniques avec effet des fonds entre tubes avec pression et raccords Mthode d’essai de rsistance l’arrachement sous force constante Thermoplastische Rohrleitungssysteme Zugfeste mechanische Verbindungen zwischen Druckrohren und stcken Prfverfahren fr den Widerstand gegen Herausziehen unter konstanter Belastung This European Standard was approved by CEN on 1993-11-25. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions English, French, German. A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 7121993 E Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EN 7121993 2 BSI 10-1999 Foreword This standard was prepared by CEN/TC 155, Plastics piping systems and ducting systems. This standard is based on the International Standard ISO 35011976 Assembled joints between fittings and polyethylene PE pressure pipes Test of resistance to pull-out, published by the International Organization for Standardization ISO. It is a modification of ISO 35011976 for reasons of applicability to other plastics materials and/or other test conditions and alignment with texts of other standards on test s. The modifications are no specific material is mentioned; no diameter limit is given; no material-dependent requirements are given; editorial changes have been introduced. The material-dependent parameters and/or perance requirements are incorporated in the system standards concerned. No existing European Standard is superseded by this standard. This standard is one of a series of standards on test s which support system standards for plastics piping systems and ducting systems. This standard has been prepared under a mandate given to CEN by the Commission of the European Communities and the European Free Trade Association, and supports essential requirements of the EC Directives. This standard has been prepared under a mandate given to CEN by the Commission of the European Communities and the European Free Trade Association, and supports essential requirements of the EC Directives. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 1994, and conflicting national standards shall be withdrawn at the latest by May 1994. The standard was approved and, in accordance with the following CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EN 7121993 BSI 10-19993 1 Scope This standard specifies a for checking the ability of assembled end-load bearing mechanical joints excluding fusion-welded joints between fittings and pressure pipes to withstand a longitudinal tensile force. 2 Principle An assembled joint is subjected to a longitudinal tensile force calculated as a function of the pipe dimensions and the maximum permissible induced hoop stress of the relevant pipe. NOTEIt is assumed that the following test parameters are set by the standard making reference to this standard a the maximum permissible induced hoop stress Bt see 5.2 or, if applicable, the relevant basis for establishing the pull-out force F see 5.1; b the test temperature T see 5.2 in degrees Celsius; c the maximum diameter to which the test is applicable and requirements set. 3 Apparatus 3.1 tensometer, capable of holding the test piece at a constant longitudinal stress or a device by which the calculated force see clause 5 may be applied to the test piece by means of weights see Figure 1. In the second case the test piece shall be suspended on a frame with a suitable stirrup at the lower end of the test piece to hold the weights. 4 Test piece The test piece shall consist of the fitting to be tested assembled with one or more pieces of pipe of the size and type for which the fitting is designed. Each piece of pipe shall be at least 200 mm in length. The assembly of the joint shall be carried out in accordance with the manufacturer’s instructions. Pipes and fittings to be assembled shall be at least 24 h old. NOTECertain materials, e.g. polybutylene, may require longer periods before test. 5 Procedure 5.1 Unless the pull-out force F, or its derivation is otherwise specified by the referring standard, from the dimensions of the pipe, calculate the area of the cross section of the pipe wall, and from this figure calculate the force, F, in newtons, necessary to produce a longitudinal stress of one and a half times the maximum permissible induced hoop stress, Bt, for the material from which the pipe is made, using the following equation F 1,5 emBtdn– em where Secure the test piece in the apparatus. Apply the calculated force, F, gradually over a period of 30 s. Hold the test piece in constant tension and at the specified temperature for a period of at least 1 h. Inspect the joints for and record any indications of loosening of the joint or partial or complete separation from the fitting by pull-out. 5.2 Unless otherwise specified in the referring standard, Bt shall be the maximum permissible induced hoop stress when subjected to water under pressure at 20 2 C for 50 years. 6 Test report The test report shall include the following ination a a reference to this standard and to the relevant referring standard; b the identity of the components [fitting, pipes] comprising the joint under test; c the calculated force F in newtons; d the test temperature T in degrees Celsius; e the maximum permissible induced hoop stress, Bt; f a report of separation of the pipe from the fitting by pull-out, if this occurred, or otherwise a declaration that the joint was not pulled out, together with a report of any signs of loosening of or leakage from the joint, if applicable; g any factors which may have affected the results, such as any incidents or any operating details not specified in this standard; h the date of test. Btis the maximum permissible induced stress, in megapascals, for the relevant pipe, as specified in 5.2; dnis the nominal outside diameter of the pipe, expressed in millimetres; emis the mean wall thickness calculated from six values comprising four positions equally spaced around the circumference of the pipe plus the maximum and the minimum wall thickness. Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EN 7121993 4 BSI 10-1999 Figure 1 Diagram of typical apparatus Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m 5blank Licensed Copy Institute Of Technology Tallaght, Institute of Technology, Sun Dec 24 043032 GMT0000 2006, Uncontrolled Copy, c BSI w w w . b z f x w . c o m BS EN 7121995 BS 2782-11 1123H1995 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. 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