BS EN 324-1-1993 Wood-based panels Determination of dimensions of boards Determination of thickness width and length《木基板材 板尺寸测定 厚度 宽度和长度测定》.pdf

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1、BRITISH STANDARD BS EN 324-1:1993 Wood-based panels Determination of dimensions of boards Part 1: Determination of thickness, width and length The European Standard EN 324-1:1993 has the status of a British StandardBSEN324-1:1993 This British Standard, having been prepared under the directionof the

2、Technical SectorBoard for Building and Civil Engineering (B/-), was published under the authority ofthe Standards Board and comesinto effect on 15April1993 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference B/541 Draft for comment 90/11137 DC ISBN 0 580

3、 21038 3 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisat

4、ion Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of

5、 Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiser

6、ingskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN324-1:1993 BSI 08-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Te

7、xt of EN 324-1 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-reference Inside back coverBSEN324-1:1993 ii BSI 08-1999 National foreword This British Standard has been prepared under the direction of the Technical Sector Board for Bui

8、lding and Civil Engineering and is the English language version of EN324-1:1993, Wood-based panels Determination of dimensions of boards Part1: Determination of thickness, width and length. EN324-1 was produced as a result of international discussion in which the UK took an active part. The principl

9、e of the method is technically equivalent to A.2.1 to A.2.4.2 and A.2.7 to A.2.8 of BS1142:1989 Specification for fibre building boards; to 7.1.1 to 7.2.5 of BS5669-1:1989, Particleboard Part1 Methods of sampling, conditioning and test; and to A.2 to A.2.4 and A.3, A.4.1, A.4.4, A.5 and A.6 of BS656

10、6-4:1985, Plywood Part4 Specification for tolerances on the dimensions of plywood panels, which will be withdrawn in due course. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compli

11、ance 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, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright

12、 date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 324-1 February 1993 UDC 674.815:531.71 Descriptors: Wood-based panel, fibreboard, particleboard, plywood, OSB, cement-bonded p

13、articleboard, test method, dimensions of boards, thickness, width, length English version Wood-based panels Determination of dimensions of boards Part 1: Determination of thickness, width and length Panneaux base de bois Dtermination des dimensions des panneaux Partie1: Dtermination de lpaisseur, de

14、 la largeur et de la longueur Holzwerkstoffe Bestimmung der Plattenmae Teil 1: Bestimmung der Dicke, Breite und Lnge This European Standard was approved by CEN on 1992-12-15. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Euro

15、pean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English

16、, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finl

17、and, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Br

18、ussels 1993 Copyright reserved to CEN members Ref. No. EN 324-1:1993 EEN324-1:1993 BSI 08-1999 2 Foreword This European Standard was prepared by Working Group4 “Common test methods” (Secretariat: United Kingdom) of Technical Committee CEN/TC 112 “Wood-based panels” (Secretariat: Germany). The text i

19、s based on ISO9426-1:1989 which has been elaborated with European participation. This standard is one of a series of standards specifying methods of test for determining dimensions and properties of wood-based panels. No existing European Standard is superseded. This European Standard shall be given

20、 the status of national standard, either by publication of an identical text or by endorsement, at the latest by August1993, and conflicting national standards shall be withdrawn at the latest by December1994. In accordance with the Common CEN/CENELEC Rules the following countries are bound to imple

21、ment this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Principle 3 4 Sampling 3 5 Moistu

22、re content at time of measurement 3 6 Conditioning 3 7 Apparatus 3 8 Procedure 3 9 Expression of results 3 10 Test report 3 Annex A (informative) Bibliography 5 Figure 1 Points of measurement of thickness , length and width of a board 4EN324-1:1993 BSI 08-1999 3 1 Scope This European Standard specif

23、ies methods for measuring the thickness, width and length of wood-based panels. It applies to whole flat boards. The methods for the determination of squareness and edge straightness are specified in EN324-2. 2 Normative references This European Standard incorporates by dated or undated reference, p

24、rovisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard, only when incorporated in

25、 it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 322, Wood-based panels Determination of moisture content. EN 326-1, Wood-based panels Sampling cutting and inspection Part 1: Sampling and cutting of test pieces and expression of test

26、results 1) . 3 Principle Thickness, length and width of full size boards are determined by linear measurement. 4 Sampling Sampling of panels shall be in accordance with EN326-1. 5 Moisture content at time of measurement Normally the dimensions of boards are measured in the as-received state. If nece

27、ssary the moisture content of the boards shall be determined in accordance with EN322. 6 Conditioning If necessary, the boards shall be conditioned to constant mass in an atmosphere with a relative humidity of (65 5)% and a temperature of(20 2) C. Constant mass is considered to be reached when the r

28、esults of two successive weighing operations, carried out at an interval of24h, do not differ by more than0,1% of the mass of the board. 7 Apparatus 7.1 Instrument for thickness measurement Micrometer, or similar measuring instrument, having flat and parallel circular measuring surfaces of (16 1)mm

29、diameter and an operating force of4N1N. The graduation of the apparatus shall allow a reading to0,05mm. 7.2 Measuring instrument for length and width measurement Steel measuring tape, accurate to1mm. 8 Procedure 8.1 Determination of thickness of boards Measure the thickness approximately 50mm from t

30、he edges, at points located in each corner and in the middle of each side, i.e.at eight points in all (seeFigure 1), to an accuracy of1% of the thickness but to not less than0,1mm. For measuring the thickness, apply the measuring surfaces of the instrument slowly to the panel surface. 8.2 Determinat

31、ion of length and width of boards Measure both the length and width of each board along two lines parallel to and at a distance of100mm from the edges (seeFigure 1), to an accuracy of0,1% but not less than1mm. 9 Expression of results 9.1 Thickness For each board tested, the arithmetic mean of the me

32、asurements shall be calculated and expressed to the nearest0,1mm. 9.2 Length and width For each board tested, the arithmetic mean of the measurements shall be calculated and expressed for the length and the width to the nearest1mm. 10 Test report As described in EN326-1. 1) At present at the draft s

33、tageEN324-1:1993 4 BSI 08-1999 Figure 1 Points of measurement of thickness , length and width of a boardEN324-1:1993 BSI 08-1999 5 Annex A (informative) Bibliography EN 309, Particleboards Definition and classification. EN 313-1, Plywood Classification and terminology Part 1: Classification. EN 316,

34、 Fibreboards Definition, classification and symbols. EN 324-2, Wood-based panels Determination of dimensions of boards Part 2: Determination of squareness and edge straightness. EN 633, Cement-bonded particleboards Definition and classification 2) . ISO 9426-1:1989, Wood-based panels Determination o

35、f dimensions Part 1: Determination of thickness, width, and length. 2) At present at the draft stage6 blankBSEN324-1:1993 BSI 08-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Technical Se

36、ctor Board for Building and Civil Engineering (B/-) to Technical Committee B/541, upon which the following bodies were represented: American Plywood Association Association of British Plywood and Veneer Manufacturers British Woodworking Federation Chartered Institute of Building Coordinator for Timb

37、er and Timber Products Council of the Forest Industries of British Columbia Department of the Environment (Construction Directorate) Fibre Building Board Organisation (FIDOR) Finnish Plywood International Flat Roofing Contractors Advisory Board Forestry Commission Furniture Industry Research Associa

38、tion Institution of Structural Engineers National Federation of Roofing Contractors National Housebuilding Council National Panel Products Association Royal Institute of British Architects Timber Research and Development Association Timber Trade Federation United Kingdom and Ireland Particleboard As

39、sociation Coopted member National annex NB (informative) Cross-reference Publication referred to Corresponding British Standard EN 322 BS EN 322:1993 Wood based panels Method for the determination of moisture contentBS EN 324-1:1993 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitu

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