1、STDmBSI BS EN 123b9-L-ENCL 2OOL = lb24bb9 0900196 393 BRITISH STANDARD BS EN 12369-1 :200 1 Wood-based panels - Characteristic values for structural design - Part 1: OSB, particleboards and fibreboards The European Standard EN 12369-1:2001 has the status of a British Standard ICs 79.060.20 NO COPYIN
2、G WITHOUT ES1 PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STD-BSI BS EN L23bS-L-ENGL 2001 D Lb24669 0900397 b2T BS EN 12369-1:2001 Amd. No. Date National foreword Comments This British Standard is the official English language version of EN 12369-1:2001. The UK participation in its preparation w
3、as entrusted to Technical Committee W541, Wood-based panels, which has the responsibility to: - - aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related inte
4、rnational and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. Users should note that the terminology and notation used in EN 12369-1 is different from that used for solid timber and different fr
5、om that previously used in the UK for wood-based panels in BS 5268-2. The symbols used are explained in 3.2 and users should note that the subscripts “O” and “SU are used to denote the major and minor axes of OSB. Bending properties are for flatwise bending, and for OSB the “U is with the major axis
6、 parallel to the span and “90” is with the minor axis parallel to the span. No corresponding values are given for edgewise bending. The tension and compression properties given are both for in-plane stresses. No values are given for perpendicular to the plane of the panel. The term panel shear is fo
7、r in-plane shear which tends to transform a rectangular section of a panel into a lozenge shape, as in the web of an I-beam. The term planar shear is also in-plane and occurs in flatwise bending and between glued components. It refers to stresses tending to cause layers of the panel to slide over on
8、e another. In BS 5268-2, this property is referred to as rolling shear. Crost+references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspon
9、dence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. 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
10、 itself confer immunity from legal obligations. This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes inta effect on 15 March 2001 8 BSI 03-2001 ISBN O 580 369
11、93 5 Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. STD*BSI BS EN L23bS-L-ENGL 2001 Lb2Ybb7 0700398
12、5bb EUROPEAN STANDARD EN 12369-1 NORME EUROPEENNE EUROPISCHE NORM January 2001 ICs 79.060.00 English version Wood based panels - Characteristic values for structural design - Part I: OSB, particleboards and fibreboards Panneaux ci base de bois -Valeurs caractristiques pour la conception des structur
13、es - Partie 1: OSB, panneaux de particules et panneaux de fibres Holzwerkstoffe - Charakteristiche Werte fr die Berechnung und Bemessung von Holzbauwerken -Teil 1: OSB, Spanplatten und Faserplatten This European Standard was approved by CEN on 3 December 2000. CEN members are bound to comply with th
14、e CENICENELEC 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 bibliographid references concerning such national standards may be obtained on application to the Management Centre or to
15、 any CEN member. This European Standard exists in three official versions (English, French, German). A version in any oher language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. C
16、EN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMIITEE FOR STANDARDIZATION COMITB EUROPBEN DE NO
17、RMALISATION EUROPISCHES KOMITEE FUR NORMUNG Management Centre: rue de Stassart, 36 8-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12369-1:2001 E STD*BSI BS EN L23bS-L-ENGL 2001 Lb24bb9 0900199 4T2 = Page 2 E
18、N 12369- 1 :200 1 Contents Page Foreword . 2 1 Scope . 3 2 Normative references . 3 3 Terms and definitions and symbols 4 3.1 Terms and definitions . . . 4 3.2 Symbols . . . 5 4 General . 5 5 Characteristics values . 6 5.1 Introduction . 6 5.2 OSB (EN 300) . 6 5.3 Particleboards (EN 312) 7 5.4 Fibre
19、boards (EN 622 parts 2 and 3) . 10 5.5 MDF (EN 622-5) , , . , . . 12 Annex A (informative) Format for the presentation of the characteristic values . . 14 Foreword This European Standard has been prepared by Technical Committee CEN/TC 11 2, Wood-based panels, the Secretariat of which is held by DIN.
20、 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 July 2001, and conflicng national standards shall be withdrawn at the latest by July 200 1. According to the CENCENELEC Internal Regulations, the n
21、ational standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom
22、. This standard is intended to be used in conjuncion with ENV 19951-1. No existing European Standard is superseded. Annex A is infomative. Q BSI 03-2001 STDOBSI BS EN L23bq-L-ENGL ZOOL = Lb24bb9 0700200 T44 Page 3 EN 12369-1 2001 1 Scope This European Standard provides information on the characteris
23、tic values for use in designing structures incorporating wood based panels. The charactenstic values given are as defined in ENV 1995-1-1. This standard includes the characteristic values of both the mechanical properties and density for the panels set out below: - OSB/2,OSB/3 and OSB/4, cornplying
24、with EN 300; - Particleboard, P4, P5, P6, P7 complying with EN 312 Parts 4 to 7; - Hardboard, HB.HiA2 complying with EN 622-2; - Medium board, MBH.lA2 complying with EN 622-3; - MDF.iA and MDF.HLS complying with EN 622-5. Characteristic values for plywood, solid wood panels, laminated veneer lumber
25、(LVL) and cement bonded parcleboards will be provided in one or more further parts of this standard. 2 Nonnative references This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the te
26、xt 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 latest edition of the publication referred to appl
27、ies (including amendments). EN 300, Oriented Strand Boards (OSB) - Definitions, classification and specifications. EN 31 24, Particleboards - Specifications - Part 4: Requirements for load-bearing boards for use in dry conditions. EN 312-5, Particleboards - Specifications - Part 5: Requirements for
28、load-bearing boards for use in humid conditions. EN 31 2-6, Particleboards - Specifications - Part 6: Requirements for heavy duty load-bearing boards for use in dry conditions. EN 31 2-7, Particleboards - Specifications - Part 7: Requirements for heavy duty load-bearing boards for use in humid condi
29、tions. EN 323, Wood-based panels - Determination of density. EN 622-2, Fibreboards - Specifications - Part 2: Requirements for hardboards. EN 622-3, Fibreboards - Specifications - Part 3: Requirements for medium boards. EN 622-5, Fibreboards - Specifications - Part 5: Requirements for dry process bo
30、ards (MDF). EN 789, Timber structures - Test methods - Determination of mechanical properties of wood based panels. EN 1058, Wood based panels - Determination of characteristic values of mechanical properties and density. ENV 1995-1 -1 Eumcode 5 - Design of timber structures - Part 1-1: General rule
31、s and rules for buildings. O BSI 03-2001 STDgBSI BS EN L23bS-1-ENGL 2OL Lb24bb9 09002OL 980 = Loadduration class Permanent Long-term Medium-term Page 4 EN 12369-1:2001 Order of accumulated duration of characteristic load Examples of loading more than 1 O years 6 months to 10 years 1 week to 6 months
32、 self weight storage imposed load 3 Terms and definitions and symbols Short-term Instantaneous 3.1 Terms and definitions less than on week snow“ and wind accidental load For the purposes of this European Standard, the following terms and definitions apply: 3.1.1 characteristic values Characteristic
33、strength values are defined as the population 5-percentile values obtained from the results of tests with a duration of 300 s at an equilibrium moisture content of the test pieces relating to a temperature of 20 “C and a relative humidity of 65 %. Characteristic stiffness values are defined as eithe
34、r the population 5-percentile or the mean values obtained under the same test conditions as defined above. The stiffness values given in the tables are mean values as these are most commonly used in design. A note below each of the tables explains how to calculate the 5gercentile value. The characte
35、ristic density is defined as the population 5-percentile value with mass and volume corresponding to equilibrium moisture content at a temperature of 20 “C and a relative humidity of 65 %. This value is used in the design of joints in association with ENV 1995-1 -1. 3.1.2 service classes three servi
36、ce classes are defined in ENV 1995-1 -1. These are: service class 1: Characterized by a misture content in the materials corresponding to a temperature of 20 “C and the relative humidity of the surrounding air only exceeding 65 % for a few weeks per year. service class 2: characterized by a moisture
37、 content in the materials corresponding to a temperature of 20 “C and the relative humidity of the surrounding air only exceeding 85 % for a few weeks per year. service class 3: climatic conditions leading to higher moisture contents than in service class 2. 3.1.3 loadduration classes For strength a
38、nd stiffness calculations, actions are assigned to one of the loadduration classes given in Table 1 (s- ENV 1995-1 -1 ). The loadduration classes are characterized by the effect of a constant load acting for a certain period of time in the life of the structure. For a variable action the appropriate
39、 class is determined on the basis of an estimate of the intemcm between the typical variation of the load with time and the rheological properties of the materials. Table 1 - Load-duration classes Q BSI 03-2001 STD-BSI BS EN L23bT-L-ENGL 2001 Lb24bb9 0900202 BL7 H Page 5 EN 12369-1 12001 3.2 Symbols
40、 In the tables the following symbols are used: 3.2.1 main symbols f strength; E G modulus of rigidity; k modulus of elasticity (defined as stiffness in ENV 19951 -1); retention in strength (kd) or stiffness Values are included in ENV 1995-1-1; after a period of time relative to initial values. t thi
41、ckness; P density as measured according to EN 323; II or O in the direction of the major axis of OSB; i or 90 in the direction of the minor axis of OSB. 3.2.2 subscripts m t C V r nom mod def 4 General bending; tension; compression; panel shear; planar shear; nominal; strength; deflection. The chara
42、cteristic values given in this standard are the minimum values applicable to products conforming to the appropriate EN specification standards. Suppliers may present these values in a format similar to that in annex A. Alternatively, Characteristic values other than those contained in this standard
43、shall be determined using sampling techniques set out in EN 1058 and testing procedures given in EN 789, and declared in a format similar to that in annex A. These characteristic values shall be supported by the following information: - the product description; - the product specification and part n
44、umber; - the service class or classes in which the panel can be used. The characteristic values given in this standard are either different from the requirements given in the specification standard for each type of panel product, due to differences in test methodology or size of test piece used (as
45、in the case of bending strength and modulus of elasticity), or are absent from the specification standards (as in the case of shear, in plane tension and compression). O BSI 03-2001 STD-BSI ES EN 123bq-b-ENGL 2001 W Lb24bb9 0900203 753 H Thickness, mm Page 6 EN 12369-1 :2001 Characteristic density (
46、kg/m3) and strength (Nlmm) values 5 Characteristic values Density P 550 550 550 5.1 Introduction Bending Tension Compression Panel Planar Shear Shear fm x fc iv J; 18,O 9,o 999 72 15,9 12,9 68 190 16,4 82 9,4 7,O 15,4 12,7 63 1 ,o 14,8 794 9,o 63 14,8 12,4 63 1 ,o O 90 O 90 O 90 This clause gives in
47、formation on the characteristic values of both mechanical properties and density for those wood based panels the values of which, unless specified to the contrary, have been determined using the sampling techniques set out in EN 1058 and the testing procedures given in EN 789. Thickness, rnm 5.2 OSB
48、 (EN 300) Mean stiffness values, Nimm I Bending I Tension I Compression I Panel I Planar This subclause gives the minimum characteristic values for OSB complying with EN 300. I Et O 90 3 800 3 O00 3 800 3 O00 3 800 3 O00 5.2.1 EN 300: OSB12 Load-bearing boards for use in dry conditions and OSB13: Lo
49、ad-bearing boards for use in humid conditions Shear Shear E, G“ G, 3 800 3 O00 1 080 50 3 800 3 O00 1 080 50 3 800 3 O00 1 080 50 O 90 When OSB/2 and OSB/3 are used structurally under service class I conditions, the characteristic values of the mechanical properties and density given in Table 2 shall apply. These require to be modified according to ENV 1995-1-1 for duration of load (h, fc fv f; 550 24,5 13,O 11,9 8,s 18,l 14,3 63 191 550 23,O 12,2 11,4 82 17,6 14,O 6,9 181 550 21 ,o 11,4 10,9 8,O 17,O 13,7 6,9 1,1 O 90 O 90 O 90 When used structurally under service class 2
