1、Resilient floor coverings Determination of the effect of simulated movement of a furniture leg The European Standard EN 424:2001 has the status ofa British Standard ICs 97.150 BS EN 424:2002 BS EN 424:2002 Amd. No. National foreword Date Comments This British Standard, having been prepared under the
2、 direction of the Sector Policy and Strategy Committee for Materials and Chemicals, was published under the authority of the Standards Policy and Strategy Committee on 26 February 2002 This British Standard is the official English language version of EN 424:200 1. It supersedes BS EN 424:1993 which
3、is withdrawn. The UKparticipation in its preparation was entrusted to Technical Committee PRV60, Resilient floor coverings, which has the responsibility to: - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for c
4、hange, 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 committee can be obtained on request to its secretary. Cr oss-r e fer enc e s The British Standards which implement internat
5、ional or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include
6、 all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with 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, the EN t
7、itle page, pages 2 to 6, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. O BSI 26 February 2002 ISBN O 580 39124 8 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 424 December 2001 ICs 97.150 Supersedes EN 424
8、:1993 English version Resilient floor coverings - Determination of the effect of simulated movement of a furniture leg Revtements de sol rsilients - Dtermination de laction du dplacement simul dun pied de meuble Elastische Bodenbelge - Bestimmung des Verhaltens bei einer nachgeahmten Verschiebung ei
9、nes Mbelfues This European Standard was approved by CEN on 15 November 2001. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and biblio
10、graphical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a
11、CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
12、 Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide
13、for CEN national Members. Ref. No. EN 424:2001 E EN 424:2001 (E) Foreword This European Standard has been prepared by Technical Committee CEN/TC 134 “Resilient and textile floor coverings“, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standa
14、rd, either by publication of an identical text or by endorsement, at the latest by June 2002, and conflicting national standards shall be withdrawn at the latest by June 2002. This European Standard supersedes EN 424:1993. According to the CENKENELEC Internal Regulations, the national standards orga
15、nizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 2 EN 424:2001 (E) Ty
16、pe 3 2 O 1 Scope Applied mass Horizontal edge Vertical edge Distance between kg radius RH radius RV opposite vertical faces mm mm mm 70 +0,5% 3 f 0,05 0,l f 0,05 34,6 f 0,05 100 +O$% 2 f 0,05 0,l f 0,05 33,6 f 0,05 32 +0,5% 0,l f 0,05 0,l f 0,05 31,7 f 0,05 This European Standard specifies a method
17、for determining the resistance of an installed resilient floor covering to the mechanical stress resulting from the simulated movement of a furniture leg. 2 Principle The resistance of an installed floor covering to the movement of a furniture leg with rounded edges and different loadings is assesse
18、d for deterioration in surface flatness, surface damage, cuts of varying depths and penetrating edges. 3 Apparatus (see Figures 1 to 3) 3.1 capstan, diameter 100 mm. The unladen peripheral speed shall be 300 mm/s. A frame, comprising two guide rails fixed re.Jtive to the test piece supporting the mo
19、tor and the control 3.2 A carriage, supported and guided by rails and having a wheel base designed to prevent jerky movements. The traction device is fixed to the carriage in such a way as to ensure that it remains perfectly stable during the test. 3.3 tensile stress value. A force-indicating device
20、, linked to the cable and to the carriage that permits identification of the maximum 3.4 carriage with slight friction and resting on the test piece by means of one of the feet described in 3.5. A platform that can be weighted using a total mass of 32 kg, 70 kg or 100 kg, sliding vertically in the 3
21、.5 Three square brass feet conforming to the dimensions given in Table 1 3 EN 424:2001 (E) Dimensions in millimetres Key 1 2 3 4 5 6 7 8 4 5 1 - 300 I I 3 / 12 6 Force indicating device Carriage Platform Traction device Floor covering Attachment to traction device Furniture leg Rails Figure 1 - Side
22、 view of apparatus A L A I I */- Figure 2 - Feet of apparatus 4 EN 424:2001 (E) Figure 3 - Horizontal section A-A 4 Sampling and preparation of test piece Take a representative sample from the available material. Prepare or select a smooth, flat base with a tolerance no greater than 13 mm over a dis
23、tance of 600 mm. NOTE cement board at least 6 mm thick resting on a rigid stand. Take one test piece approximately 1 m2 in area, which shall be fitted in accordance with the manufacturers instructions. The base may be a sand-cement screed, or a concrete slab finished with a smoothing coat, if necess
24、ary, or a fibre- 5 Conditioning Condition the test piece after fitting at a temperature of (23 f 2) “C and relative humidity of (50 f 5) % for a minimum of five days. Maintain these conditions when carrying out the test. 6 Procedure 6.1 Test paths Ensure that the test paths are at least 100 mm from
25、the edge of the test piece. Choose two separate test paths where the structure of the floor covering could cause different results for tests in different directions, .e. longitudinal and transverse direction, or the principal relief lines in the pattern for sheet floor coverings, or parallel to the
26、edge and diagonally for tiles laid alternately. 6.2 Testing Check the test piece and guide rails to ensure that they are horizontal. Remove any dust on the test piece. Fix the appropriate foot under the platorm with two edges parallel to the frame rails. Place the carriage and the platform on the ra
27、ils and the test piece, and then place the mass on the platform. After 1 min, pull the free end of the cable (which is turned once round the capstan), without exceeding a force of 1 kN, to move the entire unit horizontally at a speed of 150 mm/s to 200 mm/s over a distance of approximately 700 mm. 5
28、 EN 424:2001 (E) Repeat the test twice on two test paths in each direction for a distance of at least 700 mm. Record the damage caused for each test path. Ignore any damage arising beyond the first 600 mm of each test path, any damage at the end of the path if the tensile force exceeds 1 kN and any
29、scuffing of the surface. 7 Expression of results Express the principal types of damage for each test path as follows: a) deterioration in the flatness of the surface; b) damage which partially destroys the surface; c) cuts of varying depths; d) penetrating edges; e) f) in the case of an open joint f
30、loor covering, a joint opening greater or equal to 1 mm; in the case of a treated or welded joint, its failure. 8 Testreport The test report shall contain the following information: a) a reference to this standard, .e. EN 424; b) a complete identification of the product tested, including type, sourc
31、e and manufacturers reference numbers; c) previous history of the sample; d) the type of foot used; e) the results for each test path; f) any deviation from this standard which may have affected the results. 6 BS EN 424:2002 BSI 389 Chiswick High Road Lon don w4 4AL BSI is the independent national b
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