BS 8424-2004 Building hardware - Pull handles - Requirements and test methods《建筑五金 拉柄 要求和试验方法》.pdf

1、BRITISH STANDARD BS 8424:2004 Building hardware Pull handles Requirements and test methods ICS 91.190 BS 8424:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 19 February 2004 BSI 19 February 2004 The following BSI references relate to th

2、e work on this British Standard: Committee reference B/538/4 Draft for comment 02/100303 DC ISBN 0 580 43402 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee B/538, Doors, windows, shutters, hardware and curtain walling,

3、 to Subcommittee B/538/4, Building hardware, upon which the following bodies were represented: Association of Building Engineers Association of Building Hardware Manufacturers Association of Burglary Insurance Surveyors British Plastics Federation British Security Industry Association Building Resea

4、rch Establishment Limited Consumer Policy Committee of BSI Council for Aluminium in Building Glass and Glazing Federation Guild of Architectural Ironmongers LHC Building Components and Services Master Locksmiths Association National House-Building Council Co-opted members Amendments issued since pub

5、lication Amd. no. Date CommentsBS 8424:2004 BSI 19 February 2004 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Normative references 1 3T e r m s a n d d e f i n i t i o n s 1 4 Classification 1 5S a f e t y 2 6 Performance 2 7 Durability test 3 8M a r k i n g 6

6、 9 Information and items to be supplied by the manufacturer 6 Figure 1 Typical test apparatus 4BS 8424:2004 ii BSI 19 February 2004 Foreword This British Standard has been prepared under the direction of Subcommittee B/538/4, Building hardware. This British Standard incorporates the same classificat

7、ion system used in the series of European Standards for building hardware. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obli

8、gations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 6, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.BS 8424:2004 BSI 19 February 2004 1 1 Scope Thi

9、s British Standard specifies requirements for the performance and testing of door mounted pull handles incorporating one fixing point or more. It is applicable to pull handles of all types of material and methods of manufacture. 2 Normative references The following referenced documents are indispens

10、able 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 6100 (all parts), Glossary of building and civil engineering terms. BS EN 1670:1998, Building

11、hardware Corrosion resistance Requirements and test methods. BS EN 1634-1, Fire resistance tests for door and shutter assemblies Part 1: Fire doors and shutters. BS EN 636, Plywood Specifications. 3 Terms and definitions For the purpose of this British Standard, the terms and definitions given in BS

12、 6100 apply. 4 Classification NOTE The classification system described in this clause is the same as that specified in the series of European Standards for building hardware. 4.1 General Pull handles shall be classified in accordance with the six digit classification system described in 4.2 to 4.7.

13、4.2 Category of use (first digit) The category of use for a pull handle shall be classified as either: grade 1: light duty endures a force of 100 N; grade 2: medium duty endures a force of 250 N; grade 3: heavy duty endures a force of 600 N; grade 4: severe duty endures a force of 1 200 N. 4.3 Durab

14、ility (second digit) The durability of a pull handle shall be classified as: grade 2: 5 000 test cycles. NOTE In European Standards for building hardware, durability is classified in terms of the number of test cycles the hardware is subjected to. However, the durability test for pull handles keeps

15、the number of test cycles constant, i.e. 5 000 test cycles, and determines durability in terms of the size of a force that the pull handle can endure (see Clause 7). The size of the force that a pull handle is required to tolerate depends upon the category of use for which it is intended (see 4.2).

16、4.4 Door mass (third digit) No classification. 4.5 Suitability for use on fire/smoke doors (fourth digit) The suitability for use of the pull handles on fire/smoke door assemblies shall be classified as: grade 0: not intended for use on fire/smoke door assemblies; grade 1: suitable for use on fire/s

17、moke door assemblies. NOTE Information about the types of fire/smoke door assemblies for which the pull handle is suitable is to be supplied by the manufacturer in accordance with Clause 9.BS 8424:2004 2 BSI 19 February 2004 4.6 Safety (fifth digit) The safety of pull handles shall be classified as:

18、 grade 1: safe. 4.7 Corrosion resistance (sixth digit) The corrosion resistance of pull handles shall be classified in accordance with BS EN 1670:1998, Clause 4 as: grade 0: no defined corrosion resistance; grade 1: low resistance; grade 2: moderate resistance; grade 3: high resistance; grade 4: ver

19、y high resistance. 4.8 Summary of classification 4.9 Example of classification The following example of classification denotes a heavy duty pull handle of grade 2 durability, for an unspecified door mass. It is suitable for use on fire/smoke door assemblies and is classified as safe. The pull handle

20、 has a very high corrosion resistance and is therefore suitable for use in a marine or very polluted industrial environment. 5 Safety All pull handles which satisfy the requirements of this standard shall be classified as safe, i.e. grade 1 (see 4.6). All arrisses and exposed corners shall be rounde

21、d to a radius of not less than 0.5 mm. 6 Performance 6.1 Durability Pull handles shall be tested for durability in accordance with Clause 7. The level of durability to which a pull handle shall be tested depends upon the category of use for which it is intended (see 4.2). When tested in accordance w

22、ith Clause 7: a) the pull handle assembly shall not show any sign of damage; b) the pull handle fixings shall not show any sign of loosening or damage; and c) any residual deformation of the pull handle, as measured in accordance with 7.3.5, shall be not greater than 1 mm. 123456 Category of use Dur

23、ability Door mass Suitability for use on fire/smoke doors Safety Corrosion resistance 32114BS 8424:2004 BSI 19 February 2004 3 6.2 Corrosion resistance All pull handles, no matter what material they are made of, shall be tested for corrosion resistance in accordance with BS EN 1670:1998, 5.6 for one

24、 of the corrosion resistance grades listed in 4.7. All surfaces of the pull handle which are visible when fitted in service shall conform to the acceptance criteria in BS EN 1670:1998, 5.7. The BS EN 1670 test shall be carried out on samples that have not already been subjected to any form of testin

25、g. 6.3 Fire resistance In order to be classified as suitable for use on fire/smoke door assemblies, i.e. grade 1 in 4.5, pull handles shall be incorporated into a door assembly and the whole assembly shall be subjected to a fire test in accordance with BS EN 1634-1. BS EN 1634-1 allows for the testi

26、ng of the fire resistance of a number of different types of door assemblies. Therefore, if a pull handle is classified as suitable for use on fire/smoke doors after testing in accordance with BS EN 1634-1, the manufacturer shall supply information in accordance with Clause 9 regarding the types of f

27、ire/smoke door assemblies for which the pull handle is suitable. 7 Durability test 7.1 General Control the ambient temperature of the test environment throughout the test to between 15 C and 30 C. Ensure that the testing environment is draught free. Apply the following tolerances on measured values,

28、 except where otherwise defined: angular position, in degrees: 2; force, in newtons: 2 %; length, in millimetres: 2 %; time, in seconds: 1 s. Determine measurements using measuring instruments with an accuracy of U1.5 %. Include, as part of the test equipment, a means for recording the number of tes

29、t cycles performed. 7.2 Apparatus 7.2.1 Test rig, comprising the apparatus specified in 7.2.2 and 7.2.3. NOTE A typical test rig is shown in Figure 1. 7.2.2 Mounting block, with a thickness of (40 1) mm, made of plywood conforming to class F 30/40, E 40/50 of BS EN 636. The plywood shall be made of

30、between 18 and 22 laminations. The mounting block shall be of a suitable size to accept the test sample. The block shall extend at least 30 mm beyond the extreme dimensions of the sample in all directions, including any mounting plate or fixture that forms a part of the pull handle assembly. Where t

31、he test sample is particularly long or wide, separate mounting blocks may be used at each pull handle fixing point with the proviso that each block shall extend at least 30 mm beyond the pull handle fixing point, including any mounting plate or fixture that forms a part of the pull handle assembly.

32、Under these conditions each mounting block shall be securely fixed to a common steel plate of sufficient strength and rigidity such that there is no visible distortion of the plate during the tests. 7.2.3 Ram, comprising a hydraulic load applicator, or similar loading device, which can exert the tes

33、t forces required in 4.2. Three pull action rams on the test rig shall be connected in such a way that each can be operated independently. The pull action rams shall be capable of operating at 3 s intervals. An additional angular positioning ram shall be positioned to enable the three pull action ra

34、ms to be rotated from a 30 position to a 150 position, in increments of 30.BS 8424:2004 4 BSI 19 February 2004 7.3 Procedure 7.3.1 Preparing the test specimen Examine the test specimen to ensure that it is complete and undamaged. Mount the test specimen on the test rig specified in 7.2 using the fix

35、ings with which the manufacturer intends the pull handle to be used. If the manufacturer is not performing the durability test, the manufacturer shall supply the tester with instructions about how to mount the pull handle onto the test rig, including details about which fixings to use. NOTE The pull

36、 action rams of the test rig are not attached to the test specimen at this stage of the durability test. Key 1. Ram for angular position 4. Failure cut-out switch 2. One of three rams for pull action on handle 5. Mounting block 3. Arc of rotation from 30 to 150 6. Pull handle under test Figure 1 Typ

37、ical test apparatus 1 2 3 4 5 6BS 8424:2004 BSI 19 February 2004 5 7.3.2 Pre-test measurements Measure the gap between the inner face of the pull handle and the face of the test block, at the mid-point of the handle longitudinally. 7.3.3 Method of force application 7.3.3.1 General Select the force t

38、hat a pull action ram exerts on the test specimen from one of the categories listed in 4.2. Connect the pull action ram(s) to the test specimen and subject the test specimen to the force in accordance with 7.3.3.2 or 7.3.3.3, whichever is applicable. 7.3.3.2 Method of test for pull handles 200 mm in

39、 length Connect the three pull action rams to the pull handle and ensure that the two outer pull action rams are positioned 50 mm from each end, and the remaining pull action ram is centrally positioned on the handle. When it is not possible to connect the two outer pull action rams 50 mm from each

40、end of the pull handle, e.g. for cranked pull handles, ensure that the two outer pull action rams are connected to the next nearest practicable position. In such cases, record the precise position of the outer two pull action rams. When it is not possible to connect the middle pull action ram to the

41、 centre of the pull handle, e.g. for pull handles with one central fixing point, connect the middle pull action ram to either side of the fixing point in such a way that the load applied by the ram is evenly distributed and avoids excess stress. In such cases, record the precise position of the midd

42、le pull action ram. Subject the test specimen to the following cycle of force application. a) Index the angular positioning ram to the 30 position and apply a force without shock according to the required category of use grade shown in 4.2, each of the three pull action rams applying the force in se

43、quence. Maintain the force from each pull action ram for 3 s. b) Index the angular positioning ram to the 60, 90, 120 and 150 positions and, at each index position, apply the same force used in item a) without shock from each ram in sequence. Maintain the force from each pull action ram for 3 s for

44、each position. Repeat the a) and b) test cycle 5 000 times. 7.3.4 Post-test measurement Measure the gap between the inner face of the pull handle and the face of the test block, at the mid-point of the handle longitudinally, using the same method as in 7.3.2. If the test block has suffered damage du

45、ring the durability test, place the pull handle on a flat reference surface to enable accurate measurement of the gap. 7.3.5 Calculation of results Determine the extent of deformation caused on the pull handle after testing in accordance with 7.3.3 by calculating the difference between the values de

46、termined in 7.3.2 and 7.3.4.BS 8424:2004 6 BSI 19 February 2004 7.3.6 Post-test assessment Verify whether the performance of the pull handle conforms to 6.1 for the category of use specified in 4.2 for which it was tested. 7.4 Test report The report shall contain the following information: a) the na

47、me of the pull handle manufacturer; b) a detailed description of the pull handle and its fixings; c) the date of testing and the standard to which it has been tested, i.e. BS 8424:2004; d) the force applied in accordance with 4.2; e) whether the test was carried out in accordance with 7.3.3.2 or 7.3

48、.3.3; f) a record of the precise position and method of attachment of the pull action rams to the pull handle during force application in accordance with 7.3.3; g) extent of deformation, calculated in accordance with 7.3.5; h) whether the pull handle has passed or failed the test in accordance with

49、6.1. 8 Marking The product, or optionally its literature and packaging, shall be marked with the following 1) : a) manufacturers name or trademark or other means of positive identification; b) manufacturers product model identification; c) classification in accordance with Clause 4; d) number and date of this British Standard, i.e. BS 8424:2004; e) year and week of manufacture. NOTE The year and week of manufacture may be presen