1、BRITISH STANDARD Raised access floors The European Standard EN 12825:2001 has the status ofa British Standard ICs 91.060.30 BS EN 12825:200 1 Wk present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor rel
2、ated 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 international or European publications referred to in this doc
3、ument 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 all the necessary provisions of a contract. Users of
4、British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Date Comments This British Standard, having been prepared under the direction of the Sector Policy and Strategy Committee for Building and Ci
5、vil Engineering, was published under the authority of the Standards Policy and Strategy Committee on 22 November 2001 Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 35 and a back cover. The BSI copyright date displayed in this document in
6、dicates when the document was last issued. Amendments issued since publication O BSI 22 November 200 1 ISBN O 580 38699 6 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12825 August 2001 ICs 91.060.30 Planchers surlevs English version Raised access floors Doppelbden This European Standard was
7、approved by CEN on 21 July 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 bibliographical references concerning such national
8、 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 CEN member into its own language and notified
9、 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, Portugal, Spain, Sweden, Switzerland and Uni
10、ted 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 for CEN national Members. Ref. No. EN 12825:2
11、001 E EN 12825:2001 (E) Contents Page Foreword 3 1 Scope . 4 2 Normative references . 5 3 Terms and definitions . 6 4 Req u i re men ts 8 5 6 7 Bibliography Test and measurement methods . 9 Evaluation of conformity 33 Marking, labelling and packaging 34 2 EN 12825:2001 (E) Foreword This European Sta
12、ndard has been prepared by Technical Committee CEN/TC 323, Raised Access Floors, the Secretariat of which is held by SNV. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2002, and conflic
13、ting national standards shall be withdrawn at the latest by February 2002. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). According to the CENKENELEC Int
14、ernal Regulations, the national standards organizations 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, Switzerlan
15、d and the United Kingdom. 3 EN 12825:2001 (E) 1 Scope This standard specifies the characteristics and performance requirements of raised access floors for which the main intended use is the internal fitting out of buildings, providing full access to the services to the plenum. This standard does not
16、 cover requirements related to dangerous substances that may be subject to regulations. It is applicable to modular, factory made flooring elements, comprising panels and pedestals and defines the test methods and measurement. It provides for the evaluation of conformity of the product to this Europ
17、ean Standard. 4 EN 12825:2001 (E) 2 Normative references This European Standard incorporates by dat d or undal d reference, provisions from other publications. These normativereferences are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references,
18、subsequent amendments to other revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 1081 , Resilienf floor coverings -
19、Deferminafion of elecfrical resisfance. EN IS0 140-12, Acousfics - Measuremenf of sound insulafion in buildings and of building elemenfs - Par 12: Laborafory measuremenf of room fo room airborne and impacf sound insulafion of an access floor (IS0 140- 12:2000). EN 181 5, Resilienf and fexfile floor
20、coverings - Assessmenf of sfafic elecfrical propensify. prEN 12524, Building maferials and producfs - Energy relafed properies - Tabulafed design values. EN 12664, Thermal performance of building maferials and producfs - Deferminafion of fhermal resisfance by means of guarded hof plafe and heaf flow
21、 mefer mefhods - Dry and moisf producfs of medium and low fhermal resisfance. EN 12667, Thermal performance of building maferials and producfs - Deferminafion of fhermal resisfance by means of guarded hof plafe and heaf flow mefer mefhods - Producfs of high and medium fhermal resisfance. prEN 13501
22、-1, Fire classificafion of consfrucfion producfs and building elemenfs - Par 1: Classificafion using dafa from fire reacfion fesfs. prEN 13501 -2, Fire classificafion of consfrucfion producfs and building elemenfs - Par 2: Classificafion using dafa from fire resisfance fesfs (excluding producfs for
23、use in venfilafion sysfems). ENV 61 024-1, Profecfion of sfrucfures againsf lighfning - Par 1: General principles (IEC 61024-1:1990, modified). HD 384.4.41, Elecfrical insfallafions of buildings - Par 4: Profecfion for safefy; Chapfer 41: Profecfion againsf elecfrical shock. HD 384.4.473, Elecfrical
24、 insfallafions of buildings - Par 4: Profecfion for safefy; Chapfer 47: Applicafion of profecfive measures for safefy; Secfion 473: Measures of profecfion againsf overcurrenf. HD 384.5.54, Elecfrical insfallafions of buildings - Par 5:Selecfion and erecfion of elecfrical equipmenf; Chapfer 54: Earth
25、ing arrangemenfs and profecfive conducfors. HD 384.6.61, Elecfrical insfallafions of buildings - Par 6: verificafion; Chapfer 61: inifial verificafion. 5 EN 12825:2001 (E) 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply: 3.1 bridging / be
26、am load bearing component to accommodate situations where pedestals and stringers/beams (if available) cannot be located in their normal positions 3.2 col I apse state reached when deflection of the element or panel will continue without further increasing the test load 3.3 components parts of acces
27、s floor elements, e.g. panels, pedestals, stringers, etc. 3.4 deflection movement of tested specimen caused by load expressed as a deviation from the former linear level 3.5 d ef o rm a t i o n alteration of the shape of a specimen 3.6 deviation difference between a specified dimension or position a
28、nd the actual dimension or position 3.7 edge trim component of the panel, either adhered or mechanically fixed to all four sides to provide protection to the panels and to the floor covering 3.8 element kit that consists of one completely fabricated panel supported by pedestals together with other c
29、omponents e.g. stringers, conductive pads, etc. fixed as intended for the finished floor 3.9 finished floor height (FFH) nominal vertical dimension from the specified sub floor level to the specified finished floor level 3.10 indentation movement of the indentor into the specimen surface 3.1 1 lengt
30、h of side overall dimension of any side of a panel 6 EN 12825:2001 (E) 3.12 manufacturers stated panel size dimension to which the tolerances are applied 3.13 nominal panel size theoretical dimension used for commercial description 3.14 panel load bearing horizontal component of the access floor. It
31、 is supported by the under structure (e.9. pedestals and stringers) 3.15 pedestal vertical component or part of the element which transmits the loading to the subfloor 3.16 plenum available space between the underside of the panels of the access floor and the sub-floor 3.17 plenum height distance be
32、tween the highest point of the sub floor and the lowest point of the underside of the access floor 3.18 raised access floor factory made flooring system comprising panels supported on understructure of pedestals, and/or stringers or other components as applicable providing a load bearing structure f
33、or the fitting out of a building 3.19 safety factor the factor by which the ultimate load is divided to establish the working load 3.20 ultimate load maximum load at the time of failure of the element during the specified ultimate load test procedure 3.21 stringer horizontal component connecting ped
34、estals that may support panels (beams) 3.22 system assembly of elements forming a complete installed raised access floor 3.23 working load load given by dividing the ultimate load by the safety factor (ultimate load is sometimes called failure load and working load is sometimes called design load as
35、 well as nominal load) 7 EN 12825:2001 (E) Class 4 Requirements Maxi mum defl ect i on mm 4.1 General and load classes The ultimate load is the main criterion for classification. All other load bearing characteristics are related to the ultimate load. Raised access floors are classified according to
36、 the ultimate load as given in Table 1 Table 1 -Classes of elements Class Ultimate load kN 1 2 I26 3 I28 4 I29 5 1210 6 I212 4.2 Load bearing capacity 4.2.1 General The raised access floor shall be designed and manufactured in such a way that it provides mechanical resistance and stability and that
37、the loading that is liable to act upon it during its intended use will not lead to deformation or collapse. 4.2.2 Static loading requirements The element when subjected to the test procedures as given in 5.2.1 shall meet the following criteria: a) Before the element collapses it shall have withstood
38、 the relevant ultimate load for its class as given in Table 1 ; b) When the load applied is equivalent to the working load which is the ultimate load divided by the safety factor, the measured deflection shall not exceed the stated value in accordance to Table 2. Two classes of the safety factor are
39、 specified: 2,O and 3,O. Table 2 -Classes of deflection IA I 235 8 EN 12825:2001 (E) 4.2.3 The understructure has to support 4 times the working load of the system tested. The pedestal may not become distorted or damaged. Tests shall be carried out in accordance with 5.2.2. Pedestal vertical load be
40、aring capacity 4.2.4 Permanent deformation after loading After the application for 30 min of a test load equivalent of the working load at the weakest point of the element, the residual deflection 5 min after the removal of the load shall not exceed 0,5 mm when testing according to 5.4. 4.3 Dynamic
41、loading requirements 4.3.1 Where required, the element shall sustain the hard body impact test as described in 5.5.1. This test shall not cause any parts of the element to collapse, requiring that the test result be stated only if the test has been performed. Absorption of hard body impacts 4.3.2 Wh
42、ere required, the element shall sustain the soft body impact test as described in 5.5.2. This test shall not cause any parts of the element to collapse, requiring that the test result be stated only if the test has been performed. Absorption of soft body impacts 4.4 Dimensional deviations The panels
43、 of a raised access floor shall be manufactured within dimensions that enable their interchangeability. Deviations of dimensions shall not exceed the values given in Table 3 for one of the appropriate classes. Table 3 - Deviations on panel dimensions Identi fi cati on I Length of panel sides, see 5.
44、6.3 see 5.6.5 Thickness of panel without covering, see 5.6.6 Thickness of panel with coverings *, see 5.6.6 I Panel twist, see 5.6.7 I Vertical warping of panels, see 5.6.8 Difference in height between perimeter trims and panel surface, see 5.6.9 Devi rY Class 1 f 0,2 f 0,3 f 0,3 f 0,3 f 0,3 f 0,3 i
45、 11 3tion m Class 2 f 0,4 f 0,5 f 0,5 f 0,5 f 0,5 0,7 f 0,4 * plus thickness deviation of floor covering only if measured including covering 9 EN 12825:2001 (E) 4.5 Protection against corrosion The element shall comply with European standards, if existing, in respect of protection of metallic materi
46、als against corrosion if existing. In the absence of such standards, elements shall comply with requirements valid in the place of use of the product. 4.6 Where peel resistance is required, the connection to the floor panel shall have a peel resistance more than 0,8 N/mm. The peel resistance shall b
47、e determined by the test method in accordance with 5.7. Peel resistance of floor covering 4.7 Reaction to fire Where required, the raised access floor shall be classified for its reaction to fire according to prEN 13501 -1. Where the test method permits a representative portion of the raised access
48、floor to be tested, this shall be done in accordance with the provisions of that method (.e. for the positioning of joints). Where not possible, reaction to fire testing and classification shall be on the basis of the performance of each component and/or material making up the raised access floor. I
49、n this case, results for the raised access floor shall be based on stating the reaction to fire classification of each component and/or material. Where materials or components may be classified as reaction to fire Class AI without the need for testing”, this shall be stated for that material or component. 4.8 Resistance to fire Where required, the raised access floor shall be classified for its resistance to fire according to prEN 13501 -2. 4.9 Electrostatic conductivity The element shall comply with EN 1081, EN 1815 and HD 384.6.61, where relevant. 4.10 Risk of electro
