1、BRITISH STANDARD BS 5544:1978 Incorporating Amendment No. 1 Specification for Anti-bandit glazing (Glazing resistant to manual attack) UDC 666.155:69.028.2 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS 5544:1978 This British Standard, having been prepared under the directi
2、on of the Glass Standards Committee, was published under the authority of the Executive Board on 28 February 1978 BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference GLC/12 Draft for comment 76/52197 DC ISBN 0 580 09859 1 Cooperating organizations The Gl
3、ass Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: British Glass Industry Research Association British Lampblown Scientific Glassware Manufacturers Assoc
4、iation Ltd. British Plastics Federation* Department of the Environment (Housing and Construction)* Department of Transport Flat Glass Manufacturers Association* Glass Manufacturers Federation Scientific Instrument Manufacturers Association Society of Glass Technology* The Glass and Glazing Federatio
5、n* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: British Insurance Association British Security Industry Association Business Equipment Trade Association Ci
6、ty of London Police Council of Bank Staff Associations Department of the Environment (PSA) Home Office Industrial Safety (Protective Equipment) Manufacturers Association Metropolitan Police Ministry of Defence National Union of Bank Employees Plastics and Rubber Institute Post Office The Committee o
7、f London Clearing Bankers on behalf of the Committee of Scottish Clearing Bankers, Co-operative Bank, Central Trustee Savings Bank and Yorkshire Bank Amendments issued since publication Amd. No. Date of issue Comments 4762 February 1985 Indicated by a sideline in the marginBS 5544:1978 BSI 02-1999 i
8、 Contents Page Cooperating organizations Inside front cover Foreword ii 1S c o p e 1 2 References 1 3 Definitions 1 4 Minimum performance requirements 2 5M a r k i n g 2 Appendix A Test for resistance to successive impacts of low energy 3 Appendix B Test for resistance to high energy impact 4 Append
9、ix C Boil test 5 Figure 1 Apparatus for impact testing: elevation 5 Figure 2 Apparatus for impact testing: plan 6 Publications referred to Inside back coverBS 5544:1978 ii BSI 02-1999 Foreword General. This British Standard has been prepared, at the request of the Home Office, by a representative Te
10、chnical Committee under the direction of the Glass Standards Committee. It specifies minimum performance requirements and test methods for that type of security glazing known as anti-bandit glazing. Anti-bandit glazing is intended to delay access to a protected space, such as a showcase, shop window
11、 or premises, for a short period of time. Where protection for personnel is required, security glazing should be chosen of a grade which will give adequate protection against the attack-threat. Anti-bandit glazing complying with the requirements of this standard is most unlikely to comply with the r
12、equirements of BS 5051-1 and BS 5051-2 for bullet-resistance. On the other hand bullet-resistant glazing complying with the requirements of BS 5051-1 and BS 5051-2 will probably provide resistance to manual attack, but it is important that it should be tested for compliance with the requirements of
13、this standard if it is intended for use as anti-bandit glazing. In preparing this standard it was considered inadvisable to draw up detailed specifications for each type of security glazing known to be satisfactory a) because these would not have replaced the need for performance tests, and b) becau
14、se it would be extremely difficult to keep such specifications comprehensive and up to date by including new or improved materials or combinations of materials as they become available. Service life. Some types of anti-bandit glazing have been in use for a number of years and are known to maintain t
15、heir resistance to attack over this period of time. In view of the lack of agreement on accelerated exposure tests, particularly when related to plastics materials and their adhesion to glass, the committee has not included any weathering requirement in this standard. It is recommended that users an
16、d suppliers should give consideration to this aspect, particularly when the anti-bandit glazing is to be used in exposed conditions other than the ambient conditions of a temperate climate. Fixing. The protection provided by security glazing depends as much on the design, fixing and maintenance of t
17、he adjacent assembly as it does upon the glazing itself and it is essential that the glazing is fixed so as to resist strongly dislodgement from its fixing. The general guidance given in BS 5357 on the fixing of security glazing should be followed and this should be supplemented by the specific advi
18、ce of the manufacturer on the installation of his own products. Anti-bandit glazing panels that differ greatly in area from the test pieces specified in Appendix A and Appendix B may provide less protection in service than would be indicated by the performance of the test piece. Cleaning. It is esse
19、ntial that anti-bandit glazing is always cleaned in accordance with manufacturers recommendations. This point is of particular importance when cleaning plastics materials. Damaged glazing. If the surface of any anti-bandit glazing is damaged, whether by attack, accident or even severe abrasion due t
20、o incorrect cleaning, then the performance of such glazing under manual attack is suspect and the manufacturers advice should be sought. Vehicle glazing. If anti-bandit glazing is used in a road vehicle windscreen it should also, as nearly as possible, meet the requirements of BS 857 or BS 5282. Cer
21、tification. 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 a B
22、ritish 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 to ii, pages 1 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicated when the documen
23、t was last issued.BS 5544:1978 BSI 02-1999 1 1 Scope 1.1 This British Standard specifies requirements and test methods for anti-bandit glazing by which is meant a type of security glazing designed to resist manual attack and to delay access to the protected space for a short period of time. The crit
24、erion of failure is when a hole of specified size (relating in practice to a hand) is produced in the anti-bandit glazing. 1.2 Spalling from the surface remote from the attack has not been taken into account. 2 References The titles of the publications referred to in this standard are listed on the
25、inside back cover. 3 Definitions For the purposes of this British Standard the following definitions apply. 3.1 security glazing a glazing material which affords protection against a specified level of attack NOTE The term “security glazing” as used in this British Standard applies to products that
26、have the obvious characteristics of a conventional glass, but it is understood to include also such products as a) rigid plastics, b) laminates of glass with one or more plastics interlayers, c) laminates of glass incorporating high tensile steel wire mesh in a plastics interlayer, d) glass and/or p
27、lastics bonded with one or more plastics interlayers, e) any combination of the above. 3.2 anti-bandit glazing a type of security glazing designed to resist manual attack and to delay access to the protected space for a short period of time NOTE The glass or plastics components of an anti-bandit gla
28、zing unit may be separated by air spaces. 3.3 level of attack the designated test force directed against a security glazing 3.4 protected space the space protected by the complete installation, e.g. a showcase, shop window or part of premises 3.5 manual attack an attack such as might be made by a ma
29、n armed with an axe, crowbar or pickaxe 3.6 test piece a specified piece of anti-bandit glazing submitted to a specified test procedure 3.7 sample a specified number of test pieces which together are representative of the anti-bandit glazing material intended to comply with the requirements of this
30、British StandardBS 5544:1978 2 BSI 02-1999 4 Minimum performance requirements 4.1 Sample for resistance to impact. The sample shall be representative of the anti-bandit glazing intended to comply with the requirements of this British Standard, and shall be of the same nominal thickness. The sample s
31、hall consist of 10 test pieces each 600 mm 600 mm, the edges of which shall be free from visible chips, cracks and flaws. 4.2 Resistance to successive impacts of low energy 4.2.1 Sample. The sample shall consist of nine test pieces taken from the sample described in 4.1. 4.2.2 Acceptance. The materi
32、al shall be considered to be acceptable if at least eight of the test pieces are not penetrated by any impact of the steel ball when tested by the method described in Appendix A. 4.3 Resistance to high energy impact 4.3.1 Sample. The sample shall consist of one test piece taken from the sample descr
33、ibed in 4.1. 4.3.2 Acceptance. The material shall be considered to be acceptable if the test piece is not penetrated by the steel ball when tested by the method described in Appendix B. 4.4 Boil test (specific to glass/PVB laminated safety glass). This test is used as an assessment of quality of lam
34、ination. NOTE The boil test described was developed for the assessment of glass laminated with polyvinyl butyral and if other types of laminates are considered, a modification of the test may be necessary and should be agreed between the user and the supplier. 4.4.1 Sample. The sample shall be repre
35、sentative of the anti-bandit glazing intended to comply with the requirements of this British Standard, and shall be of the same nominal thickness. The sample shall consist of three test pieces each 300 mm 300 mm. 4.4.2 Acceptance. The material shall be considered to be acceptable if none of the tes
36、t pieces develops flaws or other defects in the area specified when tested by the method described in Appendix C. 5 Marking The following particulars shall be indelibly and distinctly marked on every panel of installed anti-bandit glazing, e.g. by means of a permanent label. a) The manufacturers nam
37、e or trade mark. b) The number of this British Standard i.e. BS 5544. NOTE A permanent label is considered to be one which cannot be removed intact and re-used.BS 5544:1978 BSI 02-1999 3 Appendix A Test for resistance to successive impacts of low energy A.1 Conditioning of test pieces. Store the tes
38、t pieces for a minimum of 4 h at a temperature of 20 5 C with the test surface exposed to free air at that temperature. A.2 Test conditions. Carry out the test at a temperature of 20 5 C. A.3 Apparatus. The following apparatus shall be used. A.3.1 A hardened steel ball with a mass of 2 260 20 g and
39、a diameter of approximately 82 mm. A.3.2 Means for dropping the ball freely from heights of 3 m and 9 m so that the ball strikes the test piece once only for every test drop within a 125 mm circle the centre of which is located at the approximate centre of the test piece. An electro-magnet may conve
40、niently be used for this purpose. A.3.3 A supporting fixture such as that shown in Figure 1. The clamping arrangements consist of two steel frames with machined edges 15 mm wide fitting one over the other and faced with rubber gaskets about 3 mm thick and 15 1 mm with of hardness 70 IRHD. The test p
41、iece is secured between the two clamping frames by two M 20 bolts 1)located through the horizontal extension of each of the four sides of the two frames as indicated in Figure 1 and Figure 2. The test piece when correctly clamped in position for an impact test shall: a) have a freely exposed testing
42、 area of at least 550 mm 550 mm; b) be clamped in position by applying a torque of 20 Nm progressively to each of the eight clamping bolts. A.4 Procedure. Immediately preceding the test, condition the test piece as described in A.1. Place the test piece in the fixture and clamp it as described in A.
43、3.3, the plane of the test piece being horizontal to within 3. Release the steel ball from a height of 3 m so that it falls freely and strikes the test piece as described in A.3.2. After 5 s retrieve the steel ball disturbing the test piece as little as possible, but brush away any loose fragments.
44、Repeat the ball drop until five impacts have been made, or until the test piece fails, whichever is the sooner. A.5 Interpretation of results. If the ball passes completely through the test piece within 5 s after an impact, the result for that impact shall be recorded as a “failure”. If the ball doe
45、s not penetrate, but remains on top of the test piece, bounces off it, or is wedged in the hole for 5 s or more, the result shall be recorded as a “pass”. 1) See BS 4190.BS 5544:1978 4 BSI 02-1999 Appendix B Test for resistance to high energy impact B.1 Conditioning of test pieces. The conditioning
46、of test pieces shall be carried out as described in A.1. B.2 Test conditions. Test conditions shall be as described in A.2. B.3 Apparatus. Apparatus shall be used as described in A.3. B.4 Procedure. Immediately preceding the test, condition the test piece as described in A.1. Place the test piece in
47、 the fixture and clamp it as described in A.3.3, the plane of the test piece being horizontal to within 3. Release the steel ball from a height of 9 m so that it falls freely and strikes the test piece as described in A.3.2. NOTE CARE SHOULD BE TAKEN THAT NO ONE IS STRUCK BY THE STEEL BALL REBOUNDIN
48、G FROM TEST PIECES OF SOME TYPES OF ANTI-BANDIT GLAZING. B.5 Interpretation of results. If the ball passes completely through the test piece within 5 s after the impact, the result shall be recorded as a “failure”. If the ball does not penetrate, but remains on top of the test piece, bounces off it,
49、 or is wedged in the hole for 5 s or more, the result shall be recorded as a “pass”.BS 5544:1978 BSI 02-1999 5 Appendix C Boil test C.1 Conditioning of test pieces. The conditioning of test pieces shall be carried out as described in A.1. C.2 Procedure. Immerse the test pieces vertically on edge for at least 3 min in water at 66 5 C and then transfer quickly to, and similarly immerse in, boiling water for 2 h. Remove, allow to cool and examine. C.3 Interpretation of results. A test piece shall be recorded as having passed the test if neither bub
