1、A CEN wENtb35-2 95 3404589 0131673 138 BRITISH STANDARD Classification by surface appearance Part 2. Hardwood The European Standard EN 6352 : 1995 has the status of a British Standard ICs 79.060.10 NO COPYLNG WITBOUT BSI PERMISSION EXCEPT AS PEWED BY COPYEIGHT LAW BS EN 635-2 : 1995 Incorpomting Ame
2、ndment No. I A AmdNo. 9124 CEN *EN*b35-2 75 = 3404587 0131674 O74 Date June 1996 Indicated by a sideline in the margin s.k$csc - BS EN 635-2 : 1996 Issue 2, June 1996 This British Standard, having been prepared under the direction of the seetor Board for Building and Civil Engineering, was pubiished
3、 under the authority of the Standards bard and comes into effect on 15 December 1995 Q BSI 1995 nie foiiowing BI references reiate to the work on this standard: committee reference B1541 Draft. for comment 981 1481 1 DC ISBN O SW 24769 4 Committees responsible for this British Standard The preparati
4、on of this British Standard was entrusted to Technical Committee B/541, Wood based panels, upon which the foliowing bodies were represented: MA/Engineered Wood Association Association of British Plywood and Veneer Manufacturers British Woodworking Federation Council of the Forest Industries of Briti
5、sh Columbia Department of the Environment (Buiiding Research Establishment) Finnish Plywood International Flat Roofing Conractors Advisory Board Forestry Commission Furniture Industry Research Association institution of Stnictural Engineers Local Authority Organizations Mined Bonded Board products F
6、eddon Nationai Federation of Roofing Contsactois National House-Building Council Nationai Panel products Association Royal Institute of British Architects Structurai Board Association Thber Research and Development Associon nber R-ade Federation Wood Panel Industries Federation 1 Zurich Municipal Bu
7、ilding Guarantee Co-opted members LA Issue 2 2 1 blank original original original original original Issue 1, June 1996 BS EN 635-2 : 1995 Page Issue 4 original 5 original 6 original 7 original 8 original 9 removed 10 removed Inside back cover onginal Back cover Original Summary of pages The foliowin
8、g table identifies the current issue of each page. issue 1 indicates that a page has been introduced for the first time by amendment. Subsequent issue numbers indicate an updated page. Vertical sidelining on replacement pages indicates the most recent changes (amendment, addition, deletion). Page Fr
9、ont cover inside front cover a b 1 Il 1 2 3 O BSI 1996 a Contents page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EX 635-2 3 i BS EN 6352 : 1995 National foreword This British Standard has been prepared by Technical Committee B/541 and is the Enghsh language ve
10、rsion of EN 635-2 : 1995 Plywood - Classification by su-rface appearance - Part 2: Hardwood, published by the European Committee for Standardization (CEN). EN 635-2 was produced as a result of international discussions in which the United Kingdom took an active part. BS EN 63.51, BS EN 635-2 and BS
11、EN 635-3 together supersede BS 6566 : Part 6 : 1985, which will be withdrawn in accordance with CEK provisions within 6 months of completion of the full package of standards covering plywood and related test methods. These standards are: EN 310 EN 313- 1 EN 313-2 EN 3 14- 1 EN 314-2 EN 315 EN 322 EN
12、 323 EN 324- 1 EN 324-2 EN 325 EN 635- 1 EN 635-2 EN 635-3 EN 636- 1 EN 636-2 EN 636-3 EN 1072 EN 1084 The method of classification used in BS EN 635-2 and BS EN 635-3 is similar to that of BS 6566 : Part 6 : 1985. But although the appearance classes in BS EN 635-2 and BS EN 635-3 are identified as
13、E, I, II, III and IV, these classes do not correspond exactly to the appearance classes E, I, II, III and IV of BS 6566 : Part 6. The BS EN 635 standards are thus not technically equivalent to Bs 6566 : Part 6. Cross-reference Publication referred to EN 635-1 1994 Corresponding British Standard BS E
14、N 635 Plywood - Ciassification by surface appearance Part 1 : 1995 General NOTE. EN 635-2 makes informative reference to EN 636-1, EN 636-2 and EN 636-3 which are currently in preparation. Compliance with a British Standard does not of itself confer immunity from legal obligations. il CEN *E#*b35-2
15、615 314045A9 81L3Lb7A ?AT EUROPEAN STANDARD EN 635-2 NORME EUROPENNE EUROPISCHE NORM May 1995 ICs 79.060.10 Descriptors: Wood board, plywood, deciduous timber, classifications, appearance, defects English version Plywood - Classification by surface appearance - Part 2: Hardwood Contreplaqu - Classif
16、ication selon laspect des faces - Partie 2: Bois feuillus Sperrholz - Klassifizierung nach dem Aussehen der Oberflche - Teil 2: Laubholz This European Standard was approved by CEN on 1995-04-14. CEN members are bound to comply with the CENCENELEC Internal Regulations which stipulate the conditions f
17、or 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 Central Secretanat or to any CEN member. This European Standard exists in three official
18、 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 as the official versions. CEN members are the national bodies of Austria, Belgum, Denmar
19、k, Finland, 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-
20、1050 Brussels O 1995 AU rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members Ref. No. EN 635-2 : 1995 E Page 2 EN635-2: 1995 Foreword Contents This European Standard has been prepared by the Rchnical Committee CEN/TC 112, Wood-based p
21、anels, of which the secretariat is held by DIN. Foreword 1 2 This standard is one of a series of standards for the The other Parts of this series are listed in clause 2 and annex A. This European Standard shall be given the status of a national standard, either by publication of an identical text or
22、 bv endorsement. at the latest bv classification of plywood by surface appearance. 3.1 3.2 November 1995, and conflicting national standards shall be withdrawn at the latest by November 1995. Annex A (informative) Bibliography Scope 3 Normative references 3 Classification by surface appearance 3 App
23、earance classes 3 Permissible characteristics and defects 3 7 According to the CENICENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwa
24、y, Portugal, Spain, Sweden, Switzerland and United Kingdom. Page 3 EN 6352 : 1995 1 Scope This European Standard specifies the nature and limits of characteristics inherent in wood and manufacturing defects enabling the visual assessment of the plywood for allocation to an appearance class. This cla
25、ssification is a contribution to assessing the finishing suitability of plywood. This Part of EN 635 applies to plywood, the surface veneers of which are made from hardwood1) species. It does not apply to overlaid panels. 2 Normative references This European Standard incorporates by dated or undated
26、 reference, provisions from other pubiications. 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 inc
27、orporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 635- 1 Plywood - Classgication by surface appearance - krt 1: Geneml 3 Classification by surface appearance 3.1 Appearance classes Assessment of characteristics and defects
28、for determination of appearance class shall be carried out in accordance with EN 635-1. Surface classification shall be based on the permissible characteristics and defects within each of the appearance classes as specified in 3.2. NmE. Guidance on selection of finishing for each appearance class is
29、 ven in ENV 635-4. 3.2 Permissible characteristics and defects Each surface shall be individually assigned to one of the appearance classes E, I, II, III, IV, as defined by the permissible characteristics and defects indicated in tables 1 and 2. i) In English, this means conventionally broadleaved s
30、pecies. Page 4 EN6352: 1995 CEN *EN+b35-2 75 34945A9 013U81i 204 W a x Y 3 P E 3 n f c 5 z o Q, E E $ n n E E 3 c C c - c t 1; L 1; I- O tn Y cd O Y Y 5 5 r-4 Y 0 O O G 5, 3 6 w 5 3 - u E - U Y Y E 8 5; z 5 Y l-3 P Y CEN *EN+b35-2 95 m 3404589 0131684 TI3 m Page 7 EN 635-2 : 1995 Annex A (informativ
31、e) Bibliography EN 313-1 EN 313-2 EN 635-1 EN 635-2 ENV 635-4 EN 636-1 EN 636-2 EN 636-3 Plywood - Class-i;fication and terminology - PZLrt 1: Classification Plywood - Classification and terminology - Part 2 : I1Fmzinology Plywood - Classification by surfme appearance - hrt 1 : Ceneml Plywood - Clas
32、svication by surfme appearance - Part 2 : Hardwood Guideline - Plywood - Classification by suflwe appearance Part 4: Parameers of ability for finishing11 Plywood - Specifications - Part 1: Requirements for plywood for use in drg conditions Plywood - Specifications - Part 2: Requirements for plywood
33、for use in humid conditions Plywood Specifications - Part 3: Requirements for plywood for use in exterior conditions At present at the draft stage. A Page 4 5 6 7 8 9 10 Inside back cover Back cover CEN uENtb35-2 95 3404589 OL3Lb5 95T Issue Original Original Original Original Original removed remove
34、d Original Original Issue 1, June 1996 BS EN 635-2 1995 Summary of pages The foilowing table identifies the current issue of each page. hue 1 indicates that a page has been introduced for the fmt time by amendment. Subsequent issue numbers indicate an updated page. Vertical sidelining on replacement
35、 pages indicates the most recent changes (amendment, addition, deletion). Page Front cover inside front cover a b 1 11 1 2 3 Issue 2 2 1 blank Original Original Original Ol-igWI OfilZiIlal O BSI 1996 a - CEN *EN*h35-2 95 W 3404589 OL3Lb8b 89b W BS EN 6352 : 1995 List of references See national forew
36、ord. CEN *EN*b35-2 95 m 3404589 0131687 722 = BS EN 635-2 : 1995 BSI 389 Chiswick High Road London W4 4AL 9512- 6- 0.5k- FP . . BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at
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43、blications and no part may be reproduced in any form without the prior permission in writing of BSI. This does not preclude the free use, in the course of implementing the standard of necessary details such as symbols and size, type or grade designations including use by incorporation into computer
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45、exploited for commercial gain. Enquiries about copyright should be made to the Copyright Manager at Chiswick. ISBN O 880 24769 4 Wuct code 00601616 BI541 AMD 9124 Amendment No. 1 published and effective from 15 June 1996 to BS EN 635-2 : 1995 Plywood - Classification by surface appearance Part 2. Ha
46、rdwood Instructions for replacement of pages Where ony one of the two pages on each sheet has been updated, the other page has been reprinted. hnt cover and incide front cover a 9 and 10 Replace the pages insert the page immediately after the inside front cover Remove the pages You may wish to retai
47、n the superseded pages, e.g. for reference purposes, if so please mark them Superseded by issue X, where X is the appropriate issue number. if you do not wish to retain the superseded pages, please destroy them. CEN *EN*b35-2 95 m 3404589 Oii3iib89 5T5 BRITISH STANDARD Plywood - Classification by su
48、rface appearance Part 2. Hardwood * * o The European Standard EN 6352 : 1995 has the status of a British Standard ICs 79.060. LO BS EN 635-2 : 1995 Incorporating Amendmt No. I NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PEBMIlTED BY COPYBIGHT LAW CEN *EN*b35-2 95 E 3404589 0131b90 217 E AmdNo. BS EN
49、 635-2 : 1995 Issue 2, June 1996 Date Text affected Committees responsible for this British Standard The following BSI references relate to the work on this standard: Committee reference Wi Draft for comment 92114811 DC ISBN O 580 24769 4 The preparation of this British Standard was entrusted to Technical Committee W541, Wood based panels, upon which the foiiowing bodies were represented MA/Engineered Wood Association Association of British Plywood and Veneer Manufacturers British Woodworking Federation Council of the Forest
