1、BRITISH STANDARD BS EN 317:1993 Particleboards and fibreboards Determination of swelling in thickness after immersion in water The European Standard EN 317:1993 has the status of a British Standard UDC 674.03:674.815:674.817:620.192.53BSEN 317:1993 This British Standard, having been prepared under t
2、he directionof the Technical Sector Board for Building and Civil Engineering (B/-), was publishedunder the authority ofthe Standards Board and comesinto effect on 15 April 1993 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference B/541 Draft for comment 9
3、0/16001 DC ISBN 0 580 21136 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 Institu
4、t belge de normalisation 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 S
5、tandards Authority of 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 Certificaci
6、n Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN 317:1993 BSI 07-1999 i Contents Page Cooperating organizations Inside front cover National forew
7、ord ii Foreword 2 Text of EN 317 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-reference Inside back coverBSEN 317:1993 ii BSI 07-1999 National foreword This British Standard has been prepared under the direction of the Technical Sec
8、tor Board for Building and Civil Engineering and is the English language version of EN317:1993 Particleboards and fibreboards Determination of swelling in thickness after immersion in water, published by the European Committee for Standardization (CEN). EN 317 was produced as a result of internation
9、al discussion in which the UK took an active part. The principle of the method is technically equivalent toA.7 of BS1142:1989 Specification for fibre building boards and to clause19 of BS5669-1:1989 Particleboard Part1Methods of sampling, conditioning and test, both of which will be withdrawn in due
10、 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. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document c
11、omprises a front cover, an inside front cover, pages i and ii, theEN title page, pages2 to6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EU
12、ROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 317 February 1993 UDC 674.03:674.815:674.817:620.192.53 Descriptors: Particleboard, fibreboard, cement-bonded particleboard, test method, swelling in thickness, immersion test English version Particleboards and fibreboards Determination of swelling
13、in thickness after immersioninwater Panneaux de particules et panneaux de fibres Dtermination du gonflement en paisseur aprs immersion dans leau Spanplatten und Faserplatten Bestimmung der Dickenquellung nach Wasserlagerung This European Standard was approved by CEN on1992-12-15. CEN members are bou
14、nd 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 bibliographical references concerning such national standards may be obtained on application to the C
15、entral Secretariat 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 to the Central Secretariat has the same status
16、as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit
17、Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 317:1993 EEN 317:1993 BSI 07-1999 2 Foreword This European Standard was prepared by Working Group1 “Particle-boards” (Secretariat:German
18、y) and Working Group3 “Fibreboards” (Secretariat:Italy) of Technical Committee CEN/TC112 “Wood-based panels” (Secretariat:Germany). This standard is one of a series specifying methods of test for determining the properties of particleboards and fibreboards. No existing European Standard is supersede
19、d. 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 August1993, and conflicting national standards shall be withdrawn at the latest by December1994. In accordance with the CEN/CENELEC Internal Regu
20、lations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative
21、references 3 3 Principle 3 4 Apparatus 3 5 Test pieces 3 6 Procedure 3 7 Expression of results 4 8 Test report 4 Annex A (informative) Bibliography 5 Figure 1 Test piece for the measurement of swelling in thickness 3EN317:1993 BSI 07-1999 3 1 Scope This European Standard specifies a method of determ
22、ining the swelling in thickness of flat-pressed or drum-pressed particleboards, fibreboards, and cement-bonded particleboards. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the app
23、ropriate 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 it by amendment or revision. For undated references the last edition of the public
24、ation referred to applies. EN 325, Wood-based panels Determination of dimensions of test pieces. EN 326-1, Wood-based panels Sampling, cutting and inspection. EN 326-1, Sampling and cutting of test pieces and expression of test results 1) . 3 Principle Swelling in thickness is determined by measurin
25、g the increase in thickness of the test piece after complete immersion in water. 4 Apparatus 4.1 Micrometer Micrometer, according to EN325. 4.2 Water bath A thermostatically controlled water bath, capable of maintaining a temperature of(20 1) C and in which the test pieces can be maintained in the c
26、onditions specified in6.2. 5 Test pieces 5.1 Sampling Sampling and cutting of the test pieces shall be carried out according to EN326-1. 5.2 Dimensions The test pieces shall be square with a side length of(50 1)mm. 5.3 Conditioning The test pieces shall be conditioned to constant mass in an atmosphe
27、re with a mean relative humidity of(65 5)% and a temperature of(20 2) C. Constant mass is considered to be reached when the results of two successive weighing operations, carried out at an interval of24h, do not differ by more than0,1% of the mass of the test piece. 6 Procedure 6.1 Thickness measure
28、ment The thickness of each test piece shall be measured to an accuracy of 0,01mm at the intersection of the diagonals, according to EN325 (Figure 1). 6.2 Immersion Immerse the test pieces with their faces vertical in clean, still water, having a pH of7 1 and a temperature of(20 1) C. This temperatur
29、e shall be maintained throughout the test period. During the test, the test pieces shall be separated from each other and from the bottom and the sides of the water bath. The upper edges of the test pieces shall be covered by(25 5)mm of water throughout the test. The water shall be changed after eac
30、h test. The immersion times shall be as specified by the individual standards for the different board types. 6.3 Further procedure After the immersion time has elapsed, take the test pieces out of the water, remove excess water and measure the thickness of each test piece(6.1). 1) At present in the
31、draft stage. Figure 1 Test piece for the measurement ofswelling in thicknessEN 317:1993 4 BSI 07-1999 7 Expression of results 7.1 For each test piece The swelling in thickness of each test piece, G t , expressed as a percentage of original thickness shall be calculated according to the following for
32、mula: Swelling in thickness shall be expressed to one decimal. 7.2 For a board The swelling in thickness of a board is the arithmetic mean of the results of all test pieces taken from that board and shall be expressed in percentage, to one decimal. 8 Test report According to EN 326-1. Additionally:T
33、heresultsofthis test, including the time of immersion. where t 1 is the thickness of the test piece before immersion, in millimetres; t 2 is the thickness of the test piece after immersion, in millimetres. G t t 2 t 1 t 1 -100 =EN317:1993 BSI 07-1999 5 Annex A (informative) Bibliography EN 300, Part
34、icleboards: Oriented Strand Boards (OSB) 2) . EN 309, Wood particleboards Definition and classification. EN 312-2, Particleboards Specifications Part 2: Requirements for general purpose boards 2) . EN 312-3, Particleboards Specifications Part 3: Requirements for boards for use in interior fitments (
35、including furniture) in dry conditions 2) . EN 312-4, Particleboards Specifications Part 4: Requirements for load-bearing boards for use in dry conditions 2) . EN 312-5, Particleboards Specifications Part 5: Requirements for load-bearing boards for use in humid conditions 2) . EN 312-6, Particleboar
36、ds Specifications Part 6: Requirements for heavy-duty load-bearing boards for use in dry conditions 2) . EN 312-7, Particleboards Specifications Part 7: Requirements for heavy-duty load bearing boards for use in humid conditions 2) . EN 316, Wood fibreboards Definition, classification and symbols. E
37、N 622-2, Fibreboards Specifications Part 2: Requirements for hardboards 2) . EN 622-3, Fibreboards Specifications Part 3: Requirements for medium boards 2) . EN 622-4, Fibreboards Specifications Part 4: Requirements for softboards 2) . EN 622-5, Fibreboards Specifications Part 5: Requirements for dr
38、y process fibreboards 2) . EN 633, Cement-bonded particleboards Definition and classification 2) . EN 634-1, Cement-bonded particleboards Specifications Part 1: General requirements 2) . 2) At present in the draft stage.6 blankBSEN 317:1993 BSI 07-1999 National annex NA (informative) Committees resp
39、onsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Technical Sector Board for Building and Civil Engineering (B/-) to Technical Committee B/541, upon which the following bodies were represented: American Plywood Association Association of Briti
40、sh Plywood and Veneer Manufacturers British Woodworking Federation Chartered Institute of Building Coordinator for Timber and Timber Products Council of the Forest Industries of British Columbia Department of the Environment (Timber Division, Building Research Establishment) Fibre Building Board Org
41、anisation (FIDOR) Finnish Plywood International Flat Roofing Contractors Advisory Board Forestry Commission Furniture Industry Research Association Institution of Structural Engineers National Federation of Roofing Contractors National Housebuilding Council National Panel Products Association Royal
42、Institute of British Architects Timber Research and Development Association Timber Trade Federation United Kingdom and Ireland Particleboard Association Coopted member National annex NB (informative) Cross-reference Publication referred to Corresponding British Standard EN 325:1993 BS EN 325:1993 Wo
43、od-based panels Determination of dimensions of test piecesBS EN 317:1993 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international le
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