《BS EN 636-3-1997 Plywood- Specifications Part 3. Requirements for plywood for use in exterior conditions.pdf》由会员分享，可在线阅读，更多相关《BS EN 636-3-1997 Plywood- Specifications Part 3. Requirements for plywood for use in exterior conditions.pdf（14页珍藏版）》请在三一文库上搜索。
1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 636-3 : 1997 The Eu
2、ropean Standard EN 636-3 : 1996 has the status of a British Standard ICS 79.060.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Plywood Specifications Part 3. Requirements for plywood for use in exterior conditions BS EN 636-3 : 1997 This British Standard, having been prepa
3、red under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 September 1997 BSI 1997 The following BSI references relate to the work on this standard: Committee reference B/541 Draft for comment 9
4、2/11491 DC ISBN 0 580 27938 3 Amendments issued since publication Amd. No.DateText affected Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee B/541, Wood-based panels, upon which the following bodies were represented: APA (
5、Engineered Wood Association) Association of British Plywood and Veneer Manufacturers British Woodworking Federation Chartered Institute of Building Co-ordinator for Timber and Timber Products Council of the Forest Industries of British Columbia Department of the Environment (Building Research Establ
6、ishment) Finnish Plywood International Flat Roofing Contractors Advisory Board Forestry Commission Furniture Industry Research Association Institution of Structural Engineers Local Authority Organizations Mineral Bonded Board Products Federation National Federation of Roofing Contractors National Ho
7、use-building Council National Panel Products Association Royal Institute of British Architects Structural Board Association Timber Research and Development Association Timber Trade Federation Wood Panel Industries Federation Zurich Municipal Building Guarantee BS EN 636-3 : 1997 BSI 1997i Contents P
8、age Committees responsibleInside front cover National forewordii Foreword2 Text of EN 636-33 ii BSI 1997 BS EN 636-3 : 1997 National foreword This British Standard has been prepared by Technical Committee B/541 and is the English language version of EN 636-3 : 1996 Plywood Specifications Part 3: Req
9、uirements for plywood for use in exterior conditions, published by the European Committee for Standardization (CEN). EN 636-3 was produced as a result of international discussions in which the United Kingdom took an active part. BS EN 636-1, BS EN 636-2 and BS EN 636-3 contain requirements which hav
10、e no direct relationship with those in BS 6566 : Parts 4, 7 and 8 : 1985. Parts 1 to 8 inclusive of BS 6566 will be withdrawn in accordance with CEN provisions within six months of completion of the full package of European Standards covering plywood and related test methods. These standards are: EN
11、 310EN 315EN 325EN 636-2 EN 313-1EN 322EN 635-1EN 636-3 EN 313-2EN 323EN 635-2EN 1072 EN 314-1EN 324-1EN 635-3EN 1084 EN 314-2EN 324-2EN 636-1 Cross-references Publication referred toCorresponding British Standard EN 310 : 1993BS EN 310 : 1993 Wood-based panels Determination of modulus of elasticity
12、 in bending and of bending strength BS EN 314 Plywood Bonding quality EN 314-1 : 1993Part 1 : 1993 Test methods EN 314-2 : 1993Part 2 : 1993 Requirements EN 315 : 1993BS EN 315 : 1993 Plywood Tolerances for dimensions EN 323 : 1992BS EN 323 : 1993 Wood-based panels Determination of density BS EN 324
13、 Wood-based panels Determination of dimensions of boards EN 324-1 : 1993Part 1 : 1993 Wood-based panels Determination of dimensions of boards Determination of thickness, width and length EN 324-2 : 1993Part 2 : 1993 Determination of squareness and edge straightness EN 335-3 : 1995BS EN 335 Hazard cl
14、asses of wood and wood-based products against biological attack Part 3: 1996 Application to wood-based panels EN 717-2 : 1994BS EN 717 Wood-based panels Determination of formaldehyde release Part 2 : 1995 Formaldehyde release by the gas analysis method EN 1058 : 1995BS EN 1058 : 1996 Wood-based pane
15、ls Determination of characteristic values of mechanical properties and density EN 1072 : 1995BS EN 1072 : 1995 Plywood Description of bending properties for structural plywood EN 1084 : 1995BS EN 1084 : 1995 Plywood Formaldehyde release classes determined by the gas analysis method The following sta
16、ndards are referred to informatively in annex A of EN 636-3: EN 318 : 1993BS EN 318 : 1993 Fibreboards Determination of dimensional changes associated with changes in relative humidity EN 320 : 1993BS EN 320 : 1993 Fibreboards Determination of resistance to axial withdrawal of screws EN 594 : 1995BS
17、 EN 594 : 1996 Timber structures Test methods Racking strength and stiffness of timber frame wall panels ? BSI 1997iii BS EN 636-3 : 1997 EN 596 : 1995BS EN 596 : 1995 Timber structures Test methods Soft body impact test of timber framed walls BS EN 635 Plywood Classification by surface appearance E
18、N 635-1 : 1995Part 1 : 1995 General EN 635-2 : 1995Part 2 : 1995 Hardwood EN 635-3 : 1995Part 3 : 1995 Softwood EN 789 : 1995BS EN 789 : 1996 Timber structures Test methods Determination of mechanical properties of wood-based panels ENV 635-4 : 1996DD ENV 635 Plywood Classification by surface appear
19、ance Part 4 : 1997 Parameters of ability for finishing Guideline Standards mentioned in the text which are prefixed by pr are in preparation, but are available as European prestandards. The draft standards identified by reference numbers 1 to 7 in annex B are now available as European prestandards a
20、s follows: 1(WI 112.019)prEN 12869-1 2(WI 112.038)prEN 12869-2 3(WI 112.020)prEN 12870-1 4(WI 112.039)prEN 12870-2 5(WI 112.021)prEN 12871-1 6(WI 112.040)prEN 12871-2 7(WI 112.067)prEN 12871-3 Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pa
21、ges This document comprises a front cover, an inside front cover, pages i to iv, the EN title page, pages 2 to 6, an inside back cover and a back cover. ? blank ? CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue
22、de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN members. Ref. No. EN 636-3 : 1996 E EUROPEAN STANDARDEN 636-3 NORME EUROPE ENNE EUROPA ISCHE NORM December 1996 ICS 79.060.10 Descriptors: Wooden board, plywood, exterior, specification, characteristics, quality control, marking English
23、version Plywood Specifications Part3: Requirements for plywood for use in exterior conditions Contreplaque Exigences Partie 3: Exigences pour contreplaque utilise en milieu exte rieur Sperrholz Anforderungen Teil 3: Anforderungen an Sperrholz zur Verwendung im Auenbereich This European Standard was
24、approved by CEN on 1996-12-05. 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 bibliographical references concerning such national
25、 standards may be obtained on application to the Central 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 notifi
26、ed to the Central Secretariat has the same status 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.
27、 ? Page 2 EN 636-3 : 1996 BSI 1997 Foreword This European Standard has been prepared by Working Group 2, Plywood, of Technical Comittee CEN/TC 112, Wood-based panels, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publicati
28、on of an identical text or by endorsement, at the latest by June 1997, and conflicting national standards shall be withdrawn at the latest by June 1997. This standard is one of a series of standards specifying requirements for plywood. The other parts of this series are listed in annex B. According
29、to the CEN/CENELEC Internal Regulations, the national standards organizations of 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, Swit
30、zerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definition3 4Requirements3 5Supplementary properties3 6Verification of compliance4 7Marking, identification and documentation4 Annex A (informative) Supplementary properties5 Annex B (informative) Bibliography6 ?
31、 Page 3 EN 636-3 : 1996 BSI 1997 1 Scope This European Standard specifies basic requirements for plywood for use in exterior conditions. Additional information on supplementary properties for certain applications is also given. 2 Normative references This European Standard incorporates, by dated or
32、undated reference, provisions 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 w
33、hen incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 310Wood-based panels Determination of modulus of elasticity in bending and of bending strength EN 314-1Plywood Bonding quality Part 1: Test methods EN 314-2Plywood B
34、onding quality Part 2: Requirements EN 315Plywood Tolerances for dimensions EN 323Wood-based panels Determination of density EN 324-1Wood-based panels Determination of dimensions of boards Part 1: Determination of thickness, width and length EN 324-2Wood-based panels Determination of dimensions of b
35、oards Part 2: Determination of squareness and edge straightness EN 335-3Durability of wood and wood-based products Definition of hazard classes of biological attack Part 3: Application to wood-based panels EN 717-2Wood-based panels Determination of formaldehyde release Part 2: Formaldehyde release b
36、y the gas analysis method EN 1058Wood-based panels Determination of characteristic values of mechanical properties and density EN 1072Plywood Description of bending properties for structural plywood EN 1084Plywood Formaldehyde release classes determined by the gas analysis method prEN 12369Wood-base
37、d panels Characteristic values for established products 3 Definition For the purposes of this standard the following definition applies. plywood for use in exterior conditions Plywood used in unprotected external applications, as defined in hazard class 3 of EN 335-3. It is capable of withstanding e
38、xposure to weathering conditions and liquid water or water vapour in a damp but ventilated location, where it can have a moisture content frequently above 20 %. 4 Requirements 4.1 Tolerances on dimensions The tolerances on dimensions shall be as specified in EN 315. 4.2 Bonding quality The bonding q
39、uality shall comply with the requirements of bonding class 3 of EN 314-2. 4.3 Biological durability Plywood shall be appropriate for prevailing climatic conditions. The risk of attack is outlined in hazard class 3 of EN 335-3. Guidance on factors affecting durability and on precautionary measures wh
40、ich may be considered necessary can be found in prENV 1099 and in EN 335-3. 4.4 Mechanical characteristics 4.4.1 General The mechanical properties of plywood for use in exterior conditions shall be determined according to their application. For structural application, refer to 4.4.2, and for non-str
41、uctural application, refer to 4.4.3. 4.4.2 Structural application The characteristic values of the mechanical properties shall either be taken from prEN 12369 or shall be determined according to EN 1058. The bending properties shall be used to identify the plywood in accordance with EN 1072. 4.4.3 N
42、on-structural application Bending properties may be determined on small test pieces in accordance with EN 310. 4.5 Formaldehyde release The formaldehyde release class, A, B or C, shall be expressed as specified in EN 1084. 5 Supplementary properties For certain applications, information on some supp
43、lementary properties can be required. Some of these supplementary properties are listed in table A.1. On request, this information should be provided by the supplier. ? Page 4 EN 636-3 : 1996 BSI 1997 Table 1. Minimum frequencies of testing for each factory PropertyTest methodMinimum frequency of te
44、sting Dimensional tolerancesEN 324-1, EN 324-2One panel per 8 h or per shift Bending properties non-structural panels structural panels EN 310 Two panels per month, whatever the lay-up One panel per 1000 panels produced, but not more than one per shift Density structural panels EN 323One panel per 1
45、000 panels produced, but not more than one per shift Bonding qualityEN 314-1One pair of glue-lines per every 2 000 pairs of glue-lines produced, whatever the lay-up of the panel, but not more than one per shift Formaldehyde releaseEN 717-2One panel per week1) 1)Where it can be proven that certain ty
46、pes of plywood have very little or no formaldehyde release, with respect to the limits specified in EN 1084, then it is not necessary to carry out quality control tests for formaldehyde release with this frequency. 1)It is intended to apply prEN 326-2 and prEN 326-3 (which are currently in preparati
47、on) as a statistical basis, when they are implemented. These properties shall be determined according to the European Standards listed in table A.1. If there is no European Standard available, the method used shall be fully described in the test report. 6 Verification of compliance 6.1 General Verif
48、ication of compliance with this European Standard shall be carried out using the test methods listed in table 1. 6.2 External control External control of the factory, if any, shall be carried out according to a statistical basis.1) Inspection of consignments, if any, shall be carried out acording to
49、 a statistical basis.1) In the case of formaldehyde release, however, for both external control and inspection of a consignment of panels, the respective requirement set out in EN 1084 shall be met by the average value of at least three boards controlled. Additionally, no individual board is allowed to exceed an upper deviation of +10 %. For bonding quality and initial i