08-30171944-DC.pdf
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1、a Date: 7 January 2008 Origin: European Latest date for receipt of comments: 30 April 2008 Project no.: 2007/02566 Responsible committee: B/514/26 Falsework Interested committees: B/514 Title: Draft BS EN 12812 Falsework - Performance requirements and general design Supersession information: If this
2、 document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NOT BE REGARDED OR USED AS
3、 A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30 April 2008. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commenting. No copying is allo
4、wed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such an organization by comm
5、ittee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email ordersbsi-. British, International and foreign standards are also available from BSI Customer Services. Information on the co-operating organizations represented on the committe
6、es referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/www.bsi-. Direct tel:
7、0208 996 7943 Responsible Committee Secretary: Miss Nyomee Kyaw (BSI) E-mail: nyomee.kyawbsi- Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 08/30171944 DC Licensed Copy: London South Bank Unive
8、rsity, London South Bank University, Fri Feb 15 07:19:17 GMT+00:00 2008, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on European discussions in which the UK has taken an active part. Your comments on this draft are welcome and will assist in the preparation of the conseque
9、nt British Standard. If no comments are received to the contrary, then the UK will approve this draft and implement it as a British Standard. Comment is particularly welcome on national, legislative or similar deviations that may be necessary. Even if this draft standard is not approved by the UK, i
10、f it receives the necessary support in Europe, the UK will be obliged to publish the official English Language text unchanged as a British Standard and to withdraw any conflicting standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote o
11、n this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsi
12、ble Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these for
13、mat requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsi- Template for comments and secretariat observati
14、ons Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1
15、 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference t
16、o UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, London South Bank University, Fri Feb 15 07:19:17 GMT+00:00 2008, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE
17、 NORM FINAL DRAFT prEN 12812 December 2007 ICS 91.220Will supersede EN 12812:2004 English Version Falsework - Performance requirements and general design Etaiements - Exigences de performance et mthodes de conception et calculs Traggerste - Anforderungen, Bemessung und Entwurf This draft European St
18、andard is submitted to CEN members for unique acceptance procedure. It has been drawn up by the Technical Committee CEN/TC 53. If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
19、Standard the status of a national standard without any alteration. This draft European Standard was established by CEN 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
20、 to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
21、 Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standar
22、d. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. prEN 12812:2007: E Lice
23、nsed Copy: London South Bank University, London South Bank University, Fri Feb 15 07:19:17 GMT+00:00 2008, Uncontrolled Copy, (c) BSI prEN 12812:2007 (E) 2 Contents Page Foreword. 3 Introduction 4 1 Scope . 5 2 Normative references. 5 3 Terms and definitions. 6 4 Design classes 7 4.1 General. 7 4.2
24、Design class A 7 4.3 Design class B 7 5 Materials 8 5.1 General. 8 5.2 Basic requirements for materials 8 5.3 Weldability. 8 6 Brief 8 7 Design requirements 8 7.1 General. 8 7.2 Thickness of material. 9 7.3 Connections 9 7.4 Flexibility of prefabricated support towers 9 7.5 Foundation 10 7.6 Towers
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