BS-EN-74-1-2005.pdf
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1、BRITISH STANDARD BS EN 74-1:2005 Couplers, spigot pins and baseplates for use in falsework and scaffolds Part 1: Couplers for tubes Requirements and test procedures The European Standard EN 74-1:2005 has the status of a British Standard ICS 91.220 ? BS EN 74-1:2005 This British Standard was publishe
2、d under the authority of the Standards Policy and Strategy Committee on 31 August 2006 BSI 2006 ISBN 0 580 49096 3 National foreword This British Standard is the official English language version of EN 74-1:2005. It supersedes BS 1139-2.1:1991 which is withdrawn. The UK participation in its preparat
3、ion was entrusted by Technical Committee B/514, Access and support equipment, to Subcommittee B/514/21, Access and working scaffolds and their components (props, tubes and couplers), which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request
4、to its secretary. Additional information BS EN 74-1:2005 specifies test procedures to establish whether couplers meet with the criteria specified. The characteristic structural parameters for couplers for use in design are not given in BS EN 74-1:2005 but in BS EN 12811-1:2003, Annex C. It is the in
5、tention of BSI Committee B/514 that once EN 74-2 and EN 74-3 of EN 74 are finalized, a separate guidance document should be published to facilitate the use of this series of standards in the UK. Textual errors The textual errors set out below were discovered when adopting the text of the European st
6、andard. They have been reported to the DIN Secretariat in a proposal to amend the text of the European standard. In Table 8 and Table 9, in the Clause column, for all references the initial 8 should be replaced by 7. In Table 10, in the NOTE, 7.1 should read 6.1. aid enquirers to understand the text
7、; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, a
8、n inside front cover, page i, a blank page, the EN title page, pages 2 to 42, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments BS EN 74-1:2005 i In Table B
9、.2, column 3, 8.2.1 and 8.2.2 should read 7.2.1 and 7.2.2 respectively. In Table B.2, column 4, BRB should read RB. In the NOTE below Table B.2, Table 6 should read Table 7. Cross-references The British Standards which implement international or European publications referred to in this document may
10、 be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users a
11、re responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 74-1 October 2005 ICS 91.220Supersedes EN 74:1988 English Version Couplers, spigot pins and baseplates
12、for use in falsework and scaffolds - Part 1: Couplers for tubes - Requirements and test procedures Raccords, goujons dassemblages et semelles pour taiement et chaffaudages de service - Partie 1: Raccords pour tubes - Exigences de performance et mthodes dessai Kupplungen, Zentrierbolzen und Fuplatten
13、 fr Arbeitsgerste und Traggerste - Teil 1: Rohrkupplungen - Anforderungen und Prfverfahren This European Standard was approved by CEN on 26 August 2005. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the stat
14、us 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 v
15、ersion 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, Cyprus, Czech Republic, Denmark, Es
16、tonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES
17、 KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 74-1:2005: E EN 74-1:2005 (E) 2 Contents Page Foreword 3 Introduction4 1 Scope.5 2 Normative references
18、.5 3 Terms, definitions and symbols 5 3.1 Terms and definitions.6 3.2 Symbols and abbreviations6 4 Types and classes of couplers7 4.1 Types of couplers .7 4.2 Classes of couplers7 5 Reference tubes and bar for coupler tests12 6 General requirements.13 6.1 Materials 13 6.2 Design13 6.3 Manufacturers
19、drawing16 6.4 Production.16 7 Test methods and evaluation of results16 7.1 General 16 7.2 Slipping and failure force.19 7.3 Pull-apart force Fp (RA).26 7.4 Stiffnesses and ultimate moments27 7.5 Indentation (RA,SW,PA) .34 8 Designation .36 9 Marking36 10 Test report.37 11 Evaluation of test results3
20、7 12 Assessment.37 13 Product manual.37 Annex A (normative) Whitworth thread size 1/2 X 12 Tpi 38 A.1 Nominal values.38 A.2 Tolerances and limiting dimensions after coating.39 Annex B (informative) Ongoing production control.40 Bibliography.42 EN 74-1:2005 (E) 3 Foreword This European Standard (EN 7
21、4-1:2005) has been prepared by Technical Committee CEN/TC 53 “Temporary works equipment”, the secretariat of which is held by DIN. 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 April 2006, and c
22、onflicting national standards shall be withdrawn at the latest by April 2006. When published this European Standard supersedes the requirements for couplers specified in EN 74:1988. There are additional requirements for some couplers. The couplers specified in this European Standard are intended for
23、 use in scaffolds erected in accordance with EN 12811-1 and falsework erected in accordance with EN 12812. This European Standard is not mandated at the time of publication. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound t
24、o implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United K
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