BS EN 13879-2002 Wood-based panels - Determination of edgewise bending properties《木基板材 边沿弯曲性能的测定》.pdf

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1、BRITISH STANDARD BS EN 13879:2002 Wood-based panels Determination of edgewise bending properties The European Standard EN 13879:2002 has the status of a British Standard ICS 79.060.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 13879:2002 This British Standard, having

2、 been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 2 July 2002 BSI 2 July 2002 ISBN 0 580 39977 X National foreword This British Standard is the official En

3、glish language version of EN 13879:2002. The UK participation in its preparation was entrusted to Technical Committee B/541, Wood-based panels, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The Bri

4、tish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards On

5、line. This publication does not purport to include all the necessary provisions of a contract. Users of this publication 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;

6、present to the responsible international/European committee 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,

7、 an inside front cover, the EN title page, pages 2 to 9 and 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 CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13879 May2002 ICS79.060.

8、01 Englishversion WoodbasedpanelsDeterminationofedgewisebending properties PanneauxbasedeboisDterminationdespropritsde flexionsurchant HolzwerkstoffeBestimmungderEigenschaftenbei Hochkantbiegung ThisEuropeanStandardwasapprovedbyCENon14March2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRe

9、gulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialvers

10、ions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,

11、Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandb

12、yanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13879:2002EEN13879:2002(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Principle4 4 Testpieces. .4 5 Conditioning.8 6 Procedure .8 7 Expressionofresults . .8 8 Testreport . .9EN13879:2002(E) 3 Foreword Thisdocument(EN13879:

13、2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC112,“Woodbasedpanels“, thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyNovember2002,andconflictingnationalstandardsshallbewithdrawnatthelates

14、t byNovember2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spai

15、n, Sweden,SwitzerlandandtheUnitedKingdom.EN13879:2002(E) 4 1Scope ThisEuropeanStandardspecifiesamethodforthedeterminationofstrength,stiffness,creepanddurationofload whenwoodbasedpanelsareloadedinedgewisebending. Itisnotapplicabletoextrudedpanels. 2 Normativereferences ThisEuropeanStandardincorporate

16、s,bydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendme

17、ntorrevision.Forundatedreferences,thelatesteditionofthe publicationreferredtoapplies(includingamendments). EN310, WoodbasedpanelsDeterminationofmodulusofelasticityinbendingandofbendingstrength. EN789, TimberstructuresTestmethodsDeterminationofmechanicalpropertiesofwoodbasedpanels. ENV1156, Woodbased

18、panelsDeterminationofdurationofloadandcreepfactors. 3Principle Thebendingpropertiesaredeterminedontestpiecespreparedfrompanelstrips,facewisefixedtogetherforminga testpiecewhichcanbetestedaccordingtooneofthethreetestmethodsforflatwisebendingdescribedinthe followingstandardsEN310,EN789,ENV1156. 4 Test

19、pieces 4.1 Numberoftestpieces 4.1.1General Eachtestpieceshallcontainstripsfromonlyonepanelandonepaneldirection. 4.1.2 NumberofstripspertestpieceandtestpiecesperpanelforEN310sizetestpieces Foreachdirectiontobetested,thenumberoftestpiecesisgiveninTable1.EN13879:2002(E) 5 Table1Numberofstripspertestpie

20、ceandtestpiecesper panelforEN310sizetestpieces Thicknessofpanel mm Numberofstrips pertestpiece Numberoftestpieces perdirectionand paneltobetested 3 16 3 4 12 3 5 10 3 6 8 3 7 7 3 8 6 3 9 5 3 10 5 3 12 4 4 14 3 5 16 3 5 18 2 6 20 2 6 25 2 6 25 1 6 4.1.3 Numberofstripspertestpieceandtestpiecesperpanel

21、forEN789sizetestpieces Foreachdirectiontobetested,thenumberoftestpiecesisgiveninTable2. Table2Numberofstripspertestpieceandtestpiecesper panelforEN789sizetestpieces Thicknessofpanel mm Numberofstrips pertestpiece Numberoftestpieces perdirectionandpanel tobetested 3 100 1 4 75 1 5 60 1 6 50 1 7 43 1

22、8 38 1 9 33 1 10 30 1 12 25 1 14 22 1 16 19 1 18 17 1 20 15 1 30 10 1EN13879:2002(E) 6 4.1.4 NumberofstripspertestpieceandtestpiecesperpanelforENV1 156sizetestpieces Foreachdirectiontobetested,thenumberoftestpiecesisgiveninTable3. Table3Numberofstripspertestpieceandtestpiecesper panelforENV1156sizet

23、estpieces Thicknessofpanel mm Numberofstrips pertestpiece Numberoftestpieces perdirectionandpanel tobetested 31 63 41 23 51 03 685 775 865 955 10 5 5 12 4 6 14 3 8 16 3 8 18 2 10 20 2 10 25 2 10 25 1 10 4.2 Preparationoftestpieces 4.2.1 Adhesivesandfasteners Usealowmodulusglue,anadhesivefilmoramecha

24、nicalfastenerwhichwillnotincreasethestiffnessand strengthofthetestpiece.Applytheadhesiveorfastenertothetestpieceattheloadingpoint(s)andatthe supports. 4.2.2 Smallsizetestpieces(seeEN310) Preparestripswithalengthof560mmandawidth( )ofaleast30mm.Fixthestripstogetherfacetobackto makeatestpiecewiththedim

25、ensions560mm (ca.50)mm mm.Cutthetestpiecetoalengthof550mm andathicknessof25mm.Thewidthofthetestpieceisdependentonthethicknessofthestrips(seeFigure1). Testpieceswithlesshomogeneousmaterial(e.g.plywood,LVL,OSBandsolidwoodpanels)andathickness morethan16mmshallbetestedwithaheightof50mm.Thetestpiecesizes

26、hallthenbechangedinaccordance withthetestmethod(seeEN310).EN13879:2002(E) 7 Dimensionsinmillimetres Figure1Smallsizetestpieceforedgewisebending 4.2.3 Mediumsizetestpieces(seeEN789) Preparestripswithalengthof1200mmandawidth( )of30mm.Fixthestripstogetherfacetobacktomakea testpiecewiththedimensions1200

27、mm (ca.300)mm mm.Cutthetestpiecetoalengthof1150mmanda thicknessof25mm.Thewidthofthetestpieceisdependentonthethicknessofthestrips(seeFigure2). Dimensionsinmillimetres Figure2Mediumsizetestpieceforedgewisebending 4.2.4 Testpiecesfordurationofloadandcreeptest(seeENV1156) Preparestripswithalengthof500mm

28、andawidth( )of30mm.Fixthestripstogetherfacetobacktomakeatest piecewiththedimensions500 (ca.50) mm.Cutthetestpiecetoalengthof460mmandathicknessof 25mm.Thewidthofthetestpieceisdependentonthethicknessofthestrips(seeFigure3).Testpieceswithless homogeneousmaterial(e.g.plywood,LVL,OSBandsolidwoodpanels)an

29、dathicknessmorethan16mmshallbe testedwithaheightof50mm.Thetestpiecesizeshallthenbechangedinaccordancewiththetestmethod(see ENV1156).EN13879:2002(E) 8 Dimensionsinmillimetres Figure3Testpiecesfordurationofloadandcreeptestforedgewisebending 5Conditioning Beforetesting,thetestpiecesshallbeconditionedto

30、constantmassinaccordancewiththerelevantteststandard EN310,EN789,ENV1156. 6Procedure 6.1 Smallsizetestpieces CarryoutthetestinaccordancewithEN310. 6.2 Mediumsizetestpieces CarryoutthetestinaccordancewithEN789. 6.3 Testpiecesfordurationofloadandcreeptest CarryoutthetestinaccordancewithENV 1156. 7 Expr

31、essionofresults 7.1 Smallsizetestpieces ExpressresultsinaccordancewithEN310. 7.2 Mediumsizetestpieces ExpressresultsinaccordancewithEN789. 7.3 Testpiecesfordurationofloadandcreeptest ExpressresultsinaccordancewithENV1156.EN13879:2002(E) 9 8 Testreport AccordingtotherelevantteststandardEN310,EN789,EN

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