1、BSI Standards PublicationBS EN 12871:2013Wood-based panels Determination of performancecharacteristics for load bearingpanels for use in floors, roofsand wallsBS EN 12871:2013 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12871:2013. It supersedes BS EN 12871:
2、2010 which is withdrawn.Whilst evaluating the compliance of wood or woodbased floor or roof decking (domestic and nondomestic), in accordance with the procedure in Clause 6, and taking into account the requirements for concentrated load given in the National Annex to EN 199111, the UK committee has
3、given the following recommendations:1. Floor decking in ground floors and in intermediate floors should be assigned to service class 1.2. Roof decking should be assigned to service class 1 or 2 where appropriate.3. Roof decking may be considered as short term loading where access is limited.4. The p
4、artial factor Qmay be taken as 1.35 (utilising KFIof 0.9 given in Annex B of EN 1990 for Reliability Class RC1) for both floors and roofs.5. The reduction factor Kredas defined in Annex B (B.2.3) of this standard should be set at 0.89.6. In the UK there is no codified deflection limit for panels spa
5、nning between joists, therefore the example limits in equations B.2 and B.3 in Annex B (informative) are not relevant.The UK participation in its preparation was entrusted to Technical Committee B/541, Wood based panels.A list of organizations represented on this committee can be obtained on request
6、 to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 76809 5ICS 79.060.01Compliance with a British St
7、andard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2013.Amendments/corrigenda issued since publicationDate Text affectedBS EN 12871:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCH
8、E NORM EN 12871 June 2013 ICS 79.060.01 Supersedes EN 12871:2010English Version Wood-based panels - Determination of performance characteristics for load bearing panels for use in floors, roofs and walls Panneaux base de bois - Dtermination des caractristiques de performance des panneaux travaillant
9、s utiliss en planchers, toitures et murs Holzwerkstoffe - Bestimmung der Leistungseigenschaften fr tragende Platten zur Verwendung in Fubden, Wnden und Dchern This European Standard was approved by CEN on 1 May 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which sti
10、pulate 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 CEN-CENELEC Management Centre or to any CEN member. This European
11、 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are th
12、e national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romani
13、a, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means res
14、erved worldwide for CEN national Members. Ref. No. EN 12871:2013: EBS EN 12871:2013EN 12871:2013 (E)2Contents PageForeword4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions .7 4 Symbols and subscripts .9 4.1 Symbols 9 4.2 Subscripts . 10 5 General requirements. 10 5.1 Speci
15、fication of panels intended for load-bearing application 10 5.2 Mechanical properties 11 5.2.1 General. 11 5.2.2 Concentrated load on structural floor or roof decking on joists. 11 5.2.3 Soft body impact test . 11 5.3 Sampling 11 6 Determination of performance characteristics 12 6.1 General Recommen
16、dations . 12 6.1.1 Dimensional tolerances: length and width 12 6.1.2 Dimensional tolerances: thickness. 12 6.1.3 Dimensional changes: linear expansion 12 6.1.4 Discrepancy at joints between panels 12 6.1.5 Edge profile of tongued and grooved or similar panels. 12 6.2 Structural floor or roof decking
17、 on joists. 13 6.2.1 General. 13 6.2.2 Determination of stiffness characteristics (serviceability limit state) for concentrated load 13 6.2.3 Determination of the serviceability load corresponding to the elasticity limit 13 6.2.4 Determination of Fmax,k13 6.2.5 Determination of Impact Class for soft
18、 body impact 13 6.3 Structural wall sheathing on studs. 14 6.3.1 General. 14 6.3.2 Soft body impact test . 15 7 Evaluation 15 7.1 Concentrated load 15 7.2 Impact load 15 8 Report 15 Annex A (normative) Modification to EN 1195. 17 A.1 Scope . 17 A.2 Modification to EN 1195 . 17 Annex B (informative)
19、Proposal for performance requirements . 18 B.1 Introduction. 18 B.2 Concentrated load 18 B.2.1 General. 18 B.2.2 Serviceability limit state. 19 B.2.3 Ultimate limit state 19 B.2.4 Increase of span Las a function of roof slope. 20 B.3 Soft body impact. 21 BS EN 12871:2013EN 12871:2013 (E)3B.3.1 Gener
20、al .21 B.3.2 Requirements.21 Annex C (informative) Example .22 C.1 General .22 C.2 Features of the end use 22 C.2.1 Decking for flooring in housing applications.22 C.2.2 Decking for an accessible cold roof (load category I).22 C.3 Type testing values of the component22 C.3.1 Main features of the tes
21、ting (according to EN 1195) .22 C.3.2 Results22 C.4 Values for the calculation parameters 23 C.5 Determination of the Limit States of the component and compliance to recommended requirements23 C.5.1 Ultimate Limit State (according to B.2.3) 23 C.5.2 Serviceability Limit State (according to B.2.2) .2
22、4 C.5.3 Summarisation.24 Bibliography25 BS EN 12871:2013EN 12871:2013 (E)2Contents PageForeword4 Introduction .5 1 Scope 6 2 Normative references 6 3 Terms and definitions .7 4 Symbols and subscripts .9 4.1 Symbols 9 4.2 Subscripts . 10 5 General requirements. 10 5.1 Specification of panels intended
23、 for load-bearing application 10 5.2 Mechanical properties 11 5.2.1 General. 11 5.2.2 Concentrated load on structural floor or roof decking on joists. 11 5.2.3 Soft body impact test . 11 5.3 Sampling 11 6 Determination of performance characteristics 12 6.1 General Recommendations . 12 6.1.1 Dimensio
24、nal tolerances: length and width 12 6.1.2 Dimensional tolerances: thickness. 12 6.1.3 Dimensional changes: linear expansion 12 6.1.4 Discrepancy at joints between panels 12 6.1.5 Edge profile of tongued and grooved or similar panels. 12 6.2 Structural floor or roof decking on joists. 13 6.2.1 Genera
25、l. 13 6.2.2 Determination of stiffness characteristics (serviceability limit state) for concentrated load 13 6.2.3 Determination of the serviceability load corresponding to the elasticity limit 13 6.2.4 Determination of Fmax,k13 6.2.5 Determination of Impact Class for soft body impact 13 6.3 Structu
26、ral wall sheathing on studs. 14 6.3.1 General. 14 6.3.2 Soft body impact test . 15 7 Evaluation 15 7.1 Concentrated load 15 7.2 Impact load 15 8 Report 15 Annex A (normative) Modification to EN 1195. 17 A.1 Scope . 17 A.2 Modification to EN 1195 . 17 Annex B (informative) Proposal for performance re
27、quirements . 18 B.1 Introduction. 18 B.2 Concentrated load 18 B.2.1 General. 18 B.2.2 Serviceability limit state. 19 B.2.3 Ultimate limit state 19 B.2.4 Increase of span Las a function of roof slope. 20 B.3 Soft body impact. 21 BS EN 12871:2013EN 12871:2013 (E)3B.3.1 General .21 B.3.2 Requirements.2
28、1 Annex C (informative) Example .22 C.1 General .22 C.2 Features of the end use 22 C.2.1 Decking for flooring in housing applications.22 C.2.2 Decking for an accessible cold roof (load category I).22 C.3 Type testing values of the component22 C.3.1 Main features of the testing (according to EN 1195)
29、 .22 C.3.2 Results22 C.4 Values for the calculation parameters 23 C.5 Determination of the Limit States of the component and compliance to recommended requirements23 C.5.1 Ultimate Limit State (according to B.2.3) 23 C.5.2 Serviceability Limit State (according to B.2.2) .24 C.5.3 Summarisation.24 Bi
30、bliography25 BS EN 12871:2013EN 12871:2013 (E)4ForewordThis document (EN 12871:2013) has been prepared by Technical Committee 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 publication of an i
31、dentical text or by endorsement, at the latest by December 2013, and conflicting national standards shall be withdrawn at the latest by December 2013.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be
32、held responsible for identifying any or all such patent rights.This document supersedes EN 12871:2010.Compared to EN 12871:2010, the following changes have been made:a) the title of the standard has been changed, because this standard now only deals with determining performance characteristics;b) pr
33、oposals for national performance requirements are given in Annex B; Annex B includes a new reduction factor for ultimate limit state;c) for soft body impact tests, 3 impact classes have been defined to describe the performance; they can be related to load categories as suggested in Annex B;d) this s
34、tandard does not include testing of racking behaviour nor uniformly distributed loads as these are covered by testing according to EN 594 or calculation according to EN 1995-1-1 respectively;e) the possibility to increase the span in dependence on the roof slope was included to Annex B;f) the refere
35、nce for the statistical evaluation of the results has been changed to EN 1058;g) the load pad used for point load testing is now 50 mm x 50 mm in all cases, see Annex A.According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imp
36、lement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romani
37、a, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.BS EN 12871:2013EN 12871:2013 (E)5IntroductionThis European Standard provides methods for determining performance characteristics for concentrated loads and impact on wood-based panels used for structural floor or roof
38、decking and for impact on wood-based panels used for wall sheathing.This European Standard takes the approach of type testing specific structures. This approach yields an optimised design since the results from the testing shall apply only to one specific design.This revision incorporates experience
39、s from use, adopts the load area for concentrated load defined in EN 1991-1-1 and the evaluation methods from EN 1058.This European Standard contains an informative annex with proposals for national requirements to the characteristics determined by this European Standard, based on Eurocodes and nati
40、onal annexes.BS EN 12871:2013EN 12871:2013 (E)4ForewordThis document (EN 12871:2013) has been prepared by Technical Committee 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 publication of an i
41、dentical text or by endorsement, at the latest by December 2013, and conflicting national standards shall be withdrawn at the latest by December 2013.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be
42、held responsible for identifying any or all such patent rights.This document supersedes EN 12871:2010.Compared to EN 12871:2010, the following changes have been made:a) the title of the standard has been changed, because this standard now only deals with determining performance characteristics;b) pr
43、oposals for national performance requirements are given in Annex B; Annex B includes a new reduction factor for ultimate limit state;c) for soft body impact tests, 3 impact classes have been defined to describe the performance; they can be related to load categories as suggested in Annex B;d) this s
44、tandard does not include testing of racking behaviour nor uniformly distributed loads as these are covered by testing according to EN 594 or calculation according to EN 1995-1-1 respectively;e) the possibility to increase the span in dependence on the roof slope was included to Annex B;f) the refere
45、nce for the statistical evaluation of the results has been changed to EN 1058;g) the load pad used for point load testing is now 50 mm x 50 mm in all cases, see Annex A.According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to imp
46、lement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romani
47、a, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.BS EN 12871:2013EN 12871:2013 (E)5IntroductionThis European Standard provides methods for determining performance characteristics for concentrated loads and impact on wood-based panels used for structural floor or roof
48、decking and for impact on wood-based panels used for wall sheathing.This European Standard takes the approach of type testing specific structures. This approach yields an optimised design since the results from the testing shall apply only to one specific design.This revision incorporates experience
49、s from use, adopts the load area for concentrated load defined in EN 1991-1-1 and the evaluation methods from EN 1058.This European Standard contains an informative annex with proposals for national requirements to the characteristics determined by this European Standard, based on Eurocodes and national annexes.BS EN 12871:2013EN 12871:2013 (E)61 ScopeThis European Standard specifies: concentrated load test and assessment methods for floor and roof decking; soft body impact assessment methods and classification system for floors, roofs and walls.This European S
