《BS-MA-42-1975.pdf》由会员分享,可在线阅读,更多相关《BS-MA-42-1975.pdf(10页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD MARINE SERIES BS MA 42:1975 Specification for Ships awnings and supports UDC 629.12.047 Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 42:1975 This British Standard, having been approved
2、 by the Shipbuilding and Marine Industry Standards Committee, was published under the authority of the Executive Board on 30 September 1975 BSI 02-2000 The following BSI references relate to the work on this standard: Committee reference SME/2 Draft for comment 74/35017 ISBN 0 580 08575 9 Foreword T
3、his British Standard has been prepared under the authority of the Shipbuilding and Marine Industry Standards Committee and is based on a proposal of the British Ship Research Association. The world wide trade of shipping, much of which is carried out in tropical and sub-tropical climates, requires t
4、hat protection from solar light and heat should be provided for certain accommodation and recreational areas to improve the environmental conditions for the ships crews. This standard specifies particulars of ships awnings and supports which are intended to provide the protection and shade required.
5、 Certification. Attention is drawn to the certification facilities described on the inside back cover of this standard. 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
6、 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, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amen
7、dments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 42:19
8、75 BSI 02-2000i Contents Page ForewordInside front cover 1Scope1 2References1 3Definitions1 4Materials1 5Design and construction1 6Quality of manufacture and finish2 Figure 1 Typical awning arrangement3 Table 1 Materials2 Licensed Copy: London South Bank University, London South Bank University, Sat
9、 Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 42:1975 BSI 02-20001 NOTEUsers of this British Standard, Marine Series should note that
10、 while observing the requirements of the standard they should at the same time ensure compliance with such statutory requirements, rules and regulations as may be applicable to the individual ship concerned. 1 Scope This standard relates to the design of permanently erected awning supports, which, i
11、n conjunction with glass fibre, canvas or synthetic awning material form a structure suitable for shading areas of deck over crew accommodation and/or providing shaded recreational areas. 2 References This standard makes reference to the following British Standards: BS 4, Structural steel sections P
12、art 2: Hot-rolled hollow sections. BS 1387, Steel tubes and tubulars suitable for screwing to BS 21 pipe threads. BS 1474, Wrought aluminium and aluminium alloys for general engineering purposes Bars, extruded round tubes and sections. BS 2087, Preservative textile treatments. BS 2807, Weights of sa
13、il canvas. BS 4154, Corrugated plastics translucent sheets made from thermosetting polyester resins (glass fibre reinforced). BS 4190, ISO metric black hexagon bolts, screws and nuts. BS 4320, Metal washers for general engineering purposes. BS 4360, Weldable structural steels. BS 5135, Metal-arc wel
14、ding of carbon and carbon manganese steels. 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 awning a material positioned overhead and suitably supported to provide protection to an area of deck from sunlight a) Fixed. Glass fibre awning. b) Portable. Canvas or s
15、ynthetic. 3.2 stanchions vertical supports for rafters and ridges 3.3 rafters athwartship supports for purlins 3.4 ridges fore and aft supports taking the inboard end connections of rafters, at the ships centre line 3.5 purlins fore and aft supports which may be intercostal attached to rafters to ta
16、ke fixed or portable awnings 3.6 jackstay a rail permanently attached to the deckhouse side, or other support, to take lashings on canvas or synthetic awnings 4 Materials The materials for construction of the awnings and structure shall be in accordance with details given in Table 1. Ship quality mi
17、ld steel may be used where BS 4360, grade 43A is specified provided that it is satisfactory in all respects. 5 Design and construction 5.1 The arrangement of canvas or glass fibre awnings and supporting structure shall be generally as shown in Figure 1. 5.2 All stanchions, rafters and purlins shall
18、be manufactured from materials in accordance with Table 1. Hollow rectangular sections shall be in accordance with dimensions given in BS 4-2. 5.3 The maximum spacing of stanchions and rafters shall be 3 m. Stanchions shall be fitted immediately over deck beams. Where this is impracticable they shal
19、l be supported at the deck on welded pads. Stanchions may be incorporated into the guard rail system where appropriate. 5.4 Rafters shall be supported at each end. Where the span is greater than 3 m a centre support stanchion shall be fitted. 5.5 Rafters for awnings shall have a slope of 1 in 20, pr
20、ovided that the minimum headroom above the deck covering so attained is not less than 2 m. 5.6 The maximum spacing of purlins shall be 1 m for freed awnings and 2 m for portable awnings. 5.7 The welding of the awning structural members shall be properly carried out by an experienced operator in acco
21、rdance With BS 5135. All welds shall be 3.5 mm throat thickness. Where tubes are used, their end preparation at interconnections shall be by profile shaping or saddling. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy,
22、(c) BSI BS MA 42:1975 2 BSI 02-2000 5.8 The awning support structure shall be designed to withstand a static load of 960 N/m2 on the completed awning assembly. 5.9 Fixing holes in glass fibre awnings shall be drilled and NOT punched, and should be 2 mm larger in diameter than the fixing accessories
23、to be used. 5.10 The spacing of fixing bolts shall not exceed 300 mm and the use of self tapping screws or blind rivets is not recommended for connecting the side laps of glass fibre awnings. 5.11 An air escape gap of 225 mm for canvas or synthetic awnings and 75 mm for glass fibre awning shall be a
24、llowed as shown in Figure 1. 6 Quality of manufacture and finish 6.1 All structural members shall be straight with the minimum of distortion and free from burrs on exposed surfaces. 6.2 When pre-galvanized steel sections are used areas damaged due to in-situ welding shall be repaired by coating with
25、 zinc-rich paint. For uncoated steel sections a protective paint finish should be applied to all surfaces, in particular, before fixed awning material is attached. 6.3 Where bi-metallic connections of steel and aluminium are unavoidable, care must be taken to ensure that the faying surfaces are sepa
26、rated by corrosion inhibiting coatings such as zinc chromate primer for aluminium, hot-dipped or sprayed zinc for steel. Synthetic rubber tape or jointing compound may also be used to separate the metals. 6.4 Portable awnings should be made from rot-proofed and water repellent materials (reference m
27、ay be made to BS 2087). Table 1 Materials ItemComponentMaterial British Standard Remarks 1AwningBest quality flax canvas No. 2 BS 2807Or suitable synthetic material Troughed translucent glass fibre sheeta BS 4154Semicircular or trapezoidal profile 2Stanchions b Steel tubesBS 1387Medium quality 3Raft
28、ers b or 4Ridges b steel hollowBS 4360Grade 43A 5Purlins b rectangular sections 6JackstaysSteelBS 4360Grade 43A AluminiumBS 1474 7HookboltsGalvanized steel 8NutsGalvanized steelBS 4190 9WashersGalvanized steelBS 4320 a Colour of translucent sheets to be specified by purchaser. b Steel sections to be
29、 galvanized where specified. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 42:1975 BSI 02-20003 Figure 1 Typical awning arrangement Licensed Copy: London South Bank University, London South Bank Univers
30、ity, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 42:1975 BSI 02-2000 BSI Certification Trade Mark The Kitemark The Kitemark is th
31、e registered certification trade mark of the British Standards Institution. A licence to use the Kitemark on or in relation to a product will be granted to any manufacturer or producer who demonstrates that he can and will be able consistently to make that product to a specified British Standard. Hi
32、s capability of doing so is initially assessed by inspection of his production process, quality control organization and test facilities, and by independent testing of a sample of the product against all the criteria of the relevant standard. The licensee is required to accept, and to operate in acc
33、ordance with, a BSI scheme of supervision and control which identifies the tests to be carried out during manufacture and on the completed product, and specifies the frequency of such testing. BSI carries out unannounced inspection visits to the manufacturers works and audit testing of the product,
34、and may withdraw the licence for any failure of the manufacturer to comply with the relevant standard or with the requirements of the scheme of supervision and control. The presence of the Kitemark on or in relation to a product is an assurance that the goods have been produced under a system of sup
35、ervision, control and testing, operated during manufacture and including periodical inspection of the manufacturers works in accordance with the certification mark scheme of BSI. Further particulars of the terms of licence may be obtained from the Quality Assurance Department, British Standards Inst
36、itution, Maylands Avenue, Hemel Hempstead, Herts. HP2 4SQ. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS MA 42:1975 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the ind
37、ependent 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. Users of British Standards should make sure that t
38、hey possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the
39、 identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international a
40、nd foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested.
41、 Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Co
42、ntact the Information Centre. Tel: 020 8996 7111. Fax: 020 8996 7048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel: 020 8
43、996 7002. Fax: 020 8996 7001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in
44、a retrieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade des
45、ignations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel: 020 8996 7070. Licensed Copy: London South Bank University, London South Bank University, Sat Dec 09 02:16:15 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
链接地址:https://www.31doc.com/p-3748866.html