1、BRITISH STANDARD BS EN 12825:2001 Raised access floors The European Standard EN 12825:2001 has the status of a British Standard ICS 91.060.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 12825:2001 This British Standard, having been prepared under the direction of the
2、Sector Policy and Strategy Committee for Building and Civil Engineering, was published under the authority of the Standards Policy and Strategy Committee on 22 November 2001 BSI 22 November 2001 ISBN 0 580 38699 6 National foreword This British Standard is the official English language version of EN
3、 12825:2001. This Standard provides a method of classifying and comparing the performance of raised access floor systems and their associated components. During the preparation of the standard, consideration was given to the need for application and installation guidance within the standard. Given t
4、he significant variation in customer requirements and national preferences it was decided that guidance should form part of a separate code of practice covering in detail their application and installation. Agreement to produce a Code of Practice for the UK has been established and will be published
5、 on completion. In the absence of the Code of Practice attention is drawn to the information concerning both subjects contained in the Property Services Agency document MOB PF2 PS/SPU March 1992 (Copyright: Access Flooring Association) and the National Building Specification NBS version K41 April 19
6、93. The UK participation in its preparation was entrusted to Technical Committee B/550, Raised access floors, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement int
7、ernational 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 in
8、clude 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. aid enquirers to understand the text; present to the responsible European committe
9、e any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 35 a
10、nd a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12825 August 2001 ICS 91.060.30 English version Raised access floors Plancher
11、s surlevs Doppelbden This European Standard was approved by CEN on 21 July 2001. CEN members are bound to comply with the CEN/CENELEC 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 b
12、ibliographical 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
13、of a 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, No
14、rway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwi
15、de for CEN national Members. Ref. No. EN 12825:2001 EEN 12825:2001 (E) 2 Contents Page Foreword 3 1 Scope.4 2 Normative references .5 3 Terms and definitions.6 4 Requirements8 5 Test and measurement methods .9 6 Evaluation of conformity33 7 Marking, labelling and packaging34 BibliographyEN 12825:200
16、1 (E) 3 Foreword This European Standard 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 la
17、test by February 2002, and conflicting 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
18、). According to the CEN/CENELEC Internal 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,
19、Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN 12825:2001 (E) 4 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
20、the plenum. This standard does not 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 confo
21、rmity of the product to this European Standard.EN 12825:2001 (E) 5 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed
22、 hereafter. For dated references, 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 1
23、081, Resilient floor coverings Determination of electrical resistance. EN ISO 140-12, Acoustics Measurement of sound insulation in buildings and of building elements Part 12: Laboratory measurement of room to room airborne and impact sound insulation of an access floor (ISO 140-12:2000). EN 1815, Re
24、silient and textile floor coverings Assessment of static electrical propensity. prEN 12524, Building materials and products Energy related properties Tabulated design values. EN 12664, Thermal performance of building materials and products Determination of thermal resistance by means of guarded hot
25、plate and heat flow meter methods Dry and moist products of medium and low thermal resistance. EN 12667, Thermal performance of building materials and products Determination of thermal resistance by means of guarded hot plate and heat flow meter methods Products of high and medium thermal resistance
26、. prEN 13501-1, Fire classification of construction products and building elements Part 1: Classification using data from fire reaction tests. prEN 13501-2, Fire classification of construction products and building elements Part 2: Classification using data from fire resistance tests (excluding prod
27、ucts for use in ventilation systems). ENV 61024-1, Protection of structures against lightning Part 1: General principles (IEC 61024-1:1990, modified). HD 384.4.41, Electrical installations of buildings Part 4: Protection for safety; Chapter 41: Protection against electrical shock. HD 384.4.473, Elec
28、trical installations of buildings Part 4: Protection for safety; Chapter 47: Application of protective measures for safety; Section 473: Measures of protection against overcurrent. HD 384.5.54, Electrical installations of buildings Part 5:Selection and erection of electrical equipment; Chapter 54: E
29、arthing arrangements and protective conductors. HD 384.6.61, Electrical installations of buildings Part 6: verification; Chapter 61: initial verification.EN 12825:2001 (E) 6 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply: 3.1 bridging /
30、beam load bearing component to accommodate situations where pedestals and stringers/beams (if available) cannot be located in their normal positions 3.2 collapse state reached when deflection of the element or panel will continue without further increasing the test load 3.3 components parts of acces
31、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 deformation alteration of the shape of a specimen 3.6 deviation difference between a specified dimension or position and the a
32、ctual 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 component
33、s 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 3.11 length of side
34、 overall dimension of any side of a panelEN 12825:2001 (E) 7 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 is suppor
35、ted by the under structure (e.g. 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 between the
36、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 for the fit
37、ting 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 pedestals tha
38、t 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 well as n
39、ominal load)EN 12825:2001 (E) 8 4 Requirements 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 the ultimate load as given in Table 1. Tab
40、le 1 Classes of elements Class Ultimate load kN 1 4 2 6 3 8 4 9 5 10 6 12 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 the loading that is liable to act upon it during it
41、s 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 the relevant ultimate load for its class as given
42、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 specified: 2,0 and 3,0. Table 2 Classes of deflecti
43、on Class Maximum deflection mm A2 , 5 B3 , 0 C4 , 0EN 12825:2001 (E) 9 4.2.3 Pedestal vertical load bearing capacity 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.
44、 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 loading requir
45、ements 4.3.1 Absorption of hard body impacts 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. 4.3.2 Absorption of so
46、ft body impacts Where 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. 4.4 Dimensional deviations The panels of a raised a
47、ccess 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 Deviation mm Identification Class 1 Class 2 Length of panel sides
48、, see 5.6.3 0,2 0,4 Squareness of panel, see 5.6.4 0,3 0,5 Straightness of sides horizontally, see 5.6.5 0,3 0,5 Thickness of panel without covering, see 5.6.6 0,3 0,5 Thickness of panel with coverings *, see 5.6.6 0,3 0,5 Panel twist, see 5.6.7 0,5 0,7 Vertical warping of panels, see 5.6.8 0,3 0,6
49、Difference in height between perimeter trims and panel surface, see 5.6.9 0,3 0,4 * plus thickness deviation of floor covering only if measured including coveringEN 12825:2001 (E) 10 4.5 Protection against corrosion The element shall comply with European standards, if existing, in respect of protection of metallic materials 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 Peel resistance of floor co
