07-30172431-DC.pdf
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1、a Date: 9 October 2007 Origin: National Latest date for receipt of comments: 30 November 2007 Project no.: 2007/02688 Responsible committee: B/208 Stairs and walkways Interested committees: Title: Draft BS BS 4211 AMD1 Specification for Permanently fixed ladders Supersession information: If this doc
2、ument 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 A B
3、RITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30 November 2007. 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 allow
4、ed, 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 commi
5、ttee 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. British Standards on CD or Online are available from British Standards Pub
6、lishing Sales Limited. Tel: 01344 404409 or email bsonlinetechindex.co.uk. Information on the co-operating organizations represented on the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or Eu
7、ropean 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: 020 8996 7224 Responsible Committee Secretary: Mr M J Hodson (BSI) E-mail: mike.hodsonbsi- Draft for Public Comment Head Office 389 Chiswick High Road L
8、ondon W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 7.0 DPC: 07/30172431 DC Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:44:50 GMT+00:00 2007, Uncontrolled Copy, (c) BSI b Introduction Your comments on this draft are welcome
9、and will assist in the preparation of the consequent British Standard. If no comments are received to the contrary, this draft may be implemented unchanged as a British Standard. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention b
10、y the responsible BSI committee. Annotated drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Micros
11、oft Word for Windows, if possible; otherwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments
12、and how to obtain a blank electronic version of a comment form are available from the BSI web site at: http:/www.bsi- 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 (ju
13、stification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 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
14、alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to 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 Unive
15、rsity, Fri Nov 16 07:44:50 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS 4211 Specification for Permanently fixed ladders Proposed amendment text Only changed text is shown. Added text is shown in underline; deleted text in strikethrough. 1 Scope This British Standard specifies requirements for ladd
16、ers with single bar rungs intended to be fixed permanently to structures, including high structures such as chimneys, silos and bins, to provide means of access. Requirements for associated platforms and safety hoops are also given. This standard also covers permanently fixed companionway ladders. 2
17、 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. BS 449-2, Specification for
18、 The use of structural steel in building Part 2: Metric units BS 3382-1:1961 b) the trap door shall not open downwards. It shall move upwards or horizontally; Licensed Copy: London South Bank University, London South Bank University, Fri Nov 16 07:44:50 GMT+00:00 2007, Uncontrolled Copy, (c) BSI c)
19、opening the trap door shall be manual and easy; d) the trap door shall allow safe passage of the operator whilst in the open position; e) closing of the trap door shall be initiated by the operator following safe passage but without the requirement for continued intervention by the operator, e.g., b
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