1、BS EN 12521:2009ICS 97.140NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDFurniture Strength,durability and safety Requirements fordomestic tablesCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction
2、 or networking permitted without license from IHS-,-,-This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2009 BSI 2009ISBN 978 0 580 60902 2Amendments/corrigenda issued since publicationDate CommentsBS EN 12521:2009National forewordT
3、his British Standard is the UK implementation of EN 12521:2009. It supersedes BS 4875-5:2009 and BS 7376:2009 and DD ENV 12521:2000 which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee FW/0/2, Domestic 2) the ends of hollow components are closed or capped.
4、 Movable and adjustable parts shall be designed so that injuries and inadvertent operation are avoided. It shall not be possible for any load bearing part of the table to come loose unintentionally. All parts that are lubricated to assist sliding shall be designed to protect users from lubricant sta
5、ins when in normal use. 5.2 Shear and squeeze points 5.2.1 Shear and squeeze points when setting up and folding Unless 5.2.2 or 5.2.3 are applicable, shear and squeeze points, as defined in 3.3, that are created only during setting up and folding, including the installation of extensions to the main
6、 table surface are acceptable, because the user can be assumed to be in control of his/her movements and to be able to cease applying the force immediately upon experiencing pain. The edges of parts moving relative to each other and creating shear and squeeze points shall be as specified in 5.1. 5.2
7、.2 Shear and squeeze points under influence of powered mechanisms There shall be no shear and squeeze points created by parts of the table operated by powered mechanisms, i.e. springs, gas lifts and motorised systems. Copyright European Committee for Standardization Provided by IHS under license wit
8、h CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12521:2009EN 12521:2009 (E) 6 5.2.3 Shear and squeeze points during use There shall be no shear and squeeze points created by forces applied during normal use, see Table 2. There shall be no shear and squee
9、ze points if a hazard is created by the user during normal movements and actions, e.g. attempting to move the table. 5.3 Stability 5.3.1 Stability under vertical load 5.3.1.1 General Tables that can be set to heights both above and below 950 mm shall be tested to both 5.3.1.1.1 and 5.3.1.1.2. 5.3.1.
10、1.1 Test for tables that are or can be set to a height of 950 mm or less The table shall be set to the height most likely to overturn the table, but not more than 950 mm. The table shall not overturn when tested according to EN 1730:2000, 6.7, using the forces specified within Table 2. 5.3.1.1.2 Tes
11、t for tables that are or can be set to a height greater than 950 mm The table shall be set to the height most likely to cause overturning, but not less than 950 mm. The table shall not overturn when tested according to EN 1730:2000, 6.7, using 50 % of the forces specified within Table 2. 5.3.2 Stabi
12、lity for tables with extension elements Load each extension element with the load specified in Table 1. For tables with extension elements not fitted with interlocks open all extension elements in the least favourable combination. For tables with extension elements fitted with interlocks open the tw
13、o extension elements with the largest loads without overriding the interlock. If an interlock device prevents any two of the extension elements from being opened simultaneously, open the extension element with the largest load. The table shall not overturn when the vertical force specified in Table
14、2 is applied at the centre of the front of the table, through a loading pad (EN 1730:2000, 5.6), 50 mm from the edge. Table 1 Loading of extension elements Component Load Extension elements designed for suspended filing only Other extension elements 1,25 kg/dm0,2 kg/dm36 Stability, strength and dura
15、bility 6.1 General Tables shall be tested for stability, strength and durability according to Table 2, following the order listed in Table 2. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license f
16、rom IHS-,-,-BS EN 12521:2009EN 12521:2009 (E) 7 Table 2 Stability, strength and durability tests Test Reference Loading Tables less than or equal to 600 mm in height, or Tables with tops with a surface area less than or equal to 0,25 m2All other tables 1. Horizontal static load EN 1730:2000, 6.2 Tes
17、t force, N: 10 times 200 400 2. Vertical static load a EN 1730:2000, 6.3 Test force, N a) main surface for tables with a height less than or equal to 600 mm b) main surface for tables with a height greater than 600 mm c) ancillary surface 10 times 1 000 250 - - 1 000 200 3. Horizontal fatigue EN 173
18、0:2000, 6.4 Number of cycles: Test force 5 000 150 N 10 000 300 N 4. Vertical fatigue for cantilever or pedestal tables EN 1730:2000, 6.5 Number of cycles: Test force 300 N - 10 000 5. Vertical impact for tables without glass in their construction EN 1730:2000, 6.6 Drop height, mm: 10 times 140 180
19、6. Vertical impact for tables with glass in their constructionEN 1730:2000, 6.6 EN 14072:2003, 6 c Drop height, mm: 10 times Safety glass bOther glass 140 180 180 240 7. Stability under vertical load a, dEN 1730:2000, 6.7 Test force, N Main surface V1V2Ancillary surface V1V2200 400 - - 200 400 100 2
20、00 8. Stability for tables with extension elements d5.3.2 Test force, N - 200 a Tables with extension pieces shall be tested both in the extended and unextended configurations. A table extension added in the centre of the table shall be tested as the main surface. A part of the main surface in the u
21、nextended configuration may become an ancillary surface in the extended configuration. b Glass is considered to be safety glass if the glass fulfils the requirements in EN 12150-1:2000, Clause 8, fragmentation test, or where the mode of breakage () according to EN 12600:2002, is Type B or Type C. c
22、Impact the table top in accordance with the positions defined within EN 1730:2000, 6.6. d For tables that might not fulfil the stability requirements before carrying out any tests, the applicable stability tests shall be carried out before starting the sequence of tests specified in this table. Copy
23、right European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12521:2009EN 12521:2009 (E) 8 6.2 Strength and durability requirements The strength and durability requirements are fulfilled wh
24、en after testing in accordance with Table 2: 1) there are no fractures of any member, joint or component, 2) there is no loosening of joints intended to be rigid, 3) the table fulfils its functions after removal of the test loads, 4) the table fulfils the stability requirements. 7 Information for us
25、e Information for use shall be available in the language of the country in which it will be delivered to the end user. It shall contain at least the following details: a) assembly instructions, where applicable, b) instructions for the care and maintenance of the table. 8 Test report The test report
26、 shall include at least the following information: a) a reference to this European Standard; b) details of the piece of furniture tested; c) details of defects observed before testing; d) any variation from the specified temperature range; e) the test results; f) details of any deviations from this
27、European Standard; g) the name and address of the test facility; h) the date of test. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12521:2009EN 12521:2009 (E) 9 Annex A
28、(informative) Table top deflection test A.1 It is recommended that the test specified in A.2 should be carried out if the deflection of the main surface of the table measured in the vertical static load test (EN 1730:2000, 6.3) exceeds 1/250 of the span for wood based panels, 1/150 of the span for t
29、imber products or 1/100 of the span for other materials. A.2 Testing of the deflection of table tops that are not made of metal, glass or stone, shall be carried out in a relative humidity of (50 5) % RH and a temperature of (20 5) C. The deflection of the tabletop shall be measured where it is grea
30、test. The greatest deflection shall be measured and recorded with reference to a straight line to an accuracy of 0,1 mm. Place the table being tested on the floor surface in its normal position. Load the table top uniformly with an evenly distributed load 1,5 kg/dm2. Maintain the test load for: 1 h
31、for table tops made of metal, glass and stone, one week for all other table tops. Measure and record the deflection at the same points and as specified above. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted
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