BS EN 1065-1999 Adjustable telescopic steel props - Product specifications design and assessment by calculation and tests《可调节的套筒式钢支架 产品规范、设计和通过计算和试验进行的评估》.pdf
《BS EN 1065-1999 Adjustable telescopic steel props - Product specifications design and assessment by calculation and tests《可调节的套筒式钢支架 产品规范、设计和通过计算和试验进行的评估》.pdf》由会员分享,可在线阅读,更多相关《BS EN 1065-1999 Adjustable telescopic steel props - Product specifications design and assessment by calculation and tests《可调节的套筒式钢支架 产品规范、设计和通过计算和试验进行的评估》.pdf(38页珍藏版)》请在麦多课文档分享上搜索。
1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1065:1999 The Europ
2、ean Standard EN 1065:1998 has the status of a British Standard ICS 91.220 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Adjustable telescopic steel props Product specifications, design and assessment by calculation and testsThis British Standard, having been prepared under t
3、he direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 November 1999 BSI 11-1999 ISBN 0 580 32838 4 BS EN 1065:1999 Amendments issued since publication Amd. No. Date Comments National foreword
4、This British Standard is the English language version of EN 1065:1998. The UK participation in its preparation was entrusted by Technical Committee B/514, Access and support equipment, to Subcommittee B/514/28, Props, tubes and couplers, which has the responsibility to: aid enquirers to understand t
5、he text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can
6、 be obtained on request to its secretary. This British Standard, together with BS 4074:1999 (in course preparation), will supersede BS 4074:1982, and partially supersede BS 5507-3:1982 which is currently under revision. The revised edition of BS 5507-3 will descibe methods of determining the charact
7、eristic resistance of adjustable props not conforming to BS EN 1065. BS 4074:1999 covers steel trench struts. This standard provides the user with a greatly enlarged choice of props. It is recommended, therefore, in the interests of maximizing site utilization, length compatibility with existing pro
8、ps, and as an aid to economic prop manufacture, that users should give preferential consideration to sizes 25, 30, 35, 40 and 50 in either B or C strength grades and to either F2 or F4 corrosion protection methods. Additionally, the use of loose forkheads is recommended. It is recommended that, if a
9、 pin has any reduction in its nominal cross section (such as holes for cables or chains), a means should be provided to ensure that this portion of the pin is always outside the collar nut major diameter. The principal changes from BS 4074:1982 and points of significance are as follows: a) Steel tre
10、nch struts (previously known as trench struts) are not covered. b) Advice on safe working loads is not included. It is envisaged that the next amendment to BS 5975 will contain some advice. c) Five different strength classes of props are included. Identification is now given by marking on each prop
11、the number of the standard, the name or trademark of the manufacturer, the year of manufacture, the classification, and the props compatibility with EN 74 couplers. The prop may also have the classification identified by profiling the endplates. When required (see annex E) the level of inspection an
12、d/or the sign of the independent certification system also have to be marked. d) Five methods of corrosion protection are given. e) Props are classified according to their fully extended lengths which range from 2,5 m to 5,5 m in 0,5 m intervals. Fully closed lengths of props are no longer specified
13、 but all props have at least 1,0 m of adjustment. f) Props having a fully closed height of less than 1,5 m are no longer included. g) A test to verify that the component parts of adjustable telescopic steel props do not become inadvertently disengaged in use has been added. h) There is a minimum lin
14、ear clearance of 100 mm between the inner and outer tubes intended to form an anti-hand trapping gap when the prop is in the fully closed position. i) The minimum permissible end plate bearing area is reduced. j) A maximum clearance between threads is now specified. k) There is a minimum material th
15、ickness for all prop components. l) The use of rimming steel is no longer permitted. m) Geometric designed props are no longer included. n) Verification of the nominal characteristic resistance of an individual prop design may also be by calculation. o) Information about independent prototype assess
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