《BS-EN-622-3-2004.pdf》由会员分享，可在线阅读，更多相关《BS-EN-622-3-2004.pdf（18页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 622-3:2004 Fibreboards Specifications Part 3: Requirements for medium boards The European Standard EN 622-3:2004 has the status of a British Standard ICS 79.060.20 ? BS EN 622-3:2004 This British Standard was published under the authority of the Standards Policy and Strategy C
2、ommittee on 6 August 2004 BSI 6 August 2004 ISBN 0 580 44224 1 National foreword This British Standard is the official English language version of EN 622-3:2004. It supersedes BS EN 622-3:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee B/541, Woo
3、d-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 British Standards which implement international or European publications referred to in this document may be found in the BSI Catal
4、ogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its cor
5、rect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests in
6、formed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 15 and a back cover. The BSI copyright notice displayed in this document indicates when the docu
7、ment was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 622-3 April 2004 ICS 79.060.20Supersedes EN 622-3:1997 English version Fibreboards - Specifications - Part 3: Requirements for medium boards Panneaux de fibres - Exige
8、nces - Partie 3: Exigences pour panneaux mi-durs Faserplatten - Anforderungen - Teil 3: Anforderungen an mittelharte Platten This European Standard was approved by CEN on 2 February 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giv
9、ing 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 Secretariat or to any CEN member. This European Standard exists in three official vers
10、ions (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 standards bodies of Austria, Belgium,
11、Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT E
12、UROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 622-3:2004: E EN 622-3:2004 (E) 2 ContentsPage Foreword3 1Scope 4 2No
13、rmative references4 3Terms and definitions5 4Requirements.6 4.1General6 4.2Requirements for general purpose boards.6 4.2.1Requirements for boards for use in dry conditions.6 4.2.2Requirements for boards for use in humid conditions7 4.2.3Requirements for boards for use in exterior conditions.7 4.3Req
14、uirements for load-bearing boards .8 4.3.1General8 4.3.2Requirements for boards for use in humid conditions8 4.3.3Requirements for boards for use in humid conditions9 5Verification of compliance10 5.1General10 5.2External control10 5.3Factory production control.10 6Marking.10 6.1General purpose boar
15、ds .10 6.2Load-bearing boards.11 6.3Colour coding.11 Annex A (normative) Supplementary properties .12 Annex B (normative) Boil test according to EN 1087-1:1995 Modified procedure 13 Annex C (normative) Determination of bending strength after boil test according to EN 1087- 1:1995 Modified procedure.
16、14 Bibliography15 EN 622-3:2004 (E) 3 Foreword This document (EN 622-3:2004) 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 identica
17、l text or by endorsement, at the latest by October 2004, and conflicting national standards shall be withdrawn at the latest by October 2004. This standard is one of a series specifying requirements for fibreboards. The other parts of this series are listed in clause 2 and in the bibliography. This
18、document supersedes EN 622-3:1997. The following, modifications have been made: a)The quality requirements of the panel types MBH.H, MBH.E, MBH.LA2, MBH.HLS1 and MBH.HLS2 have been modified. b) The test interval for moisture resistance has been reduced in accordance with EN 13986. Annexes A, B and C
19、 are normative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, I
20、taly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 622-3:2004 (E) 4 1 Scope This European Standard specifies the requirements for medium boards as defined in EN 316. The values listed in this standa
21、rd relate to product properties but they are not characteristic values to be used in design calculations1). 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in
22、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 incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to
23、 applies (including amendments). EN 310:1993, Wood-based panels Determination of modulus of elasticity in bending and of bending strength. EN 317, Particleboards and Fibreboards Determination of swelling in thickness after immersion in water. EN 318, Wood based panels - Determination of dimensional
24、changes associated with changes in relative humidity EN 319, Particleboards and Fibreboards Determination of tensile strength perpendicular to the plane of the board. EN 326-1, Wood-based panels Sampling, cutting and inspection Part 1: Sampling and cutting of test pieces and expression of test resul
25、ts. EN 326-2, Wood-based panels Sampling, cutting and inspection Part 2: Quality control in the factory. EN 326-3, Wood-based panels Sampling, cutting and inspection Part 3: Inspection of an isolated lot of panels. EN 622-1, Fibreboards Specifications Part 1: General requirements. EN 1087-1:1995, Pa
26、rticleboards - Determination of moisture resistance - Part 1: Boil test EN 12871, Wood-based panels Performance specifications and requirements for load-bearing boards for use in floors, walls and roofs. EN 13986:2002, Wood-based panels for use in construction Characteristics, evaluation of conformi
27、ng and marking. ENV 1995-1-1:1993, Eurocode 5 Design of timber structures Part 1-1: General rules and rules for buildings. ISO 3340, Fibre building boards Determination of sand content. 1)Such characteristic values (e.g. for use in design calculation in ENV 1995-1-1) are either given EN 12369-1 or d
28、erived by testing according to EN 789, EN 1058 and ENV 1156. EN 622-3:2004 (E) 5 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 dry conditions conditions corresponding to service class 1 of ENV 1995-1-1:1993 which is characterised b
29、y a moisture content in the material corresponding to a temperature of 20 C and a relative humidity of the surrounding air only exceeding 65 % for a few weeks per year EN 13986:2002 3.2 humid conditions conditions corresponding to service class 2 of ENV 1995-1-1:1993 which is characterised by a mois
30、ture content in the material corresponding to a temperature of 20 C and a relative humidity of the surrounding air only exceeding 85 % for a few weeks per year EN 13986:2002 3.3 external conditions conditions corresponding to service class 3 of ENV 1995-1-1:1993 which is characterised by climatic co
31、nditions leading to higher moisture contents than in service class 2 EN 13986:2002 3.4 general purpose use all non-load bearing applications, e.g. furniture and fitments 3.5 load-bearing use use in a load-bearing construction, i.e. an organized assembly of connected parts designed to provide mechani
32、cal resistance and stability to the works. Also referred to as “structure” 3.6 load duration category see Table 1 Table 1 Load duration categories Load duration category Order of accumulated duration of characteristic load Examples of loading Permanentmore than 10 yearsself weight Long-term6 months
33、to 10 yearsstorage Medium-term1 week to 6 monthsimposed load Short-termless than 1 weeksnowa, wind Instantaneousaccidental loading a In areas which have a heavy snow load for a prolonged period of time. part of the load should be regarded as medium-term. EN 622-3:2004 (E) 6 4 Requirements 4.1 Genera
34、l Medium boards shall comply with the general requirements of EN 622-1 together with the relevant require- ments set out in 4.2 and 4.3 of this standard. The requirements for some supplementary properties are given in annex A. The requirements in Tables 2 to 8 shall be met by 5 percentile values (95
35、 percentile values in the case of swelling in thickness), based on the mean test values for individual panels and calculated in accordance with EN 326-1. In the case of swelling in thickness, they shall be equal to or less than the values in the Tables, and in the case of all other properties, they
36、shall be equal to or greater than the values in the Tables. The values in the Tables for both bending strength and modulus of elasticity shall apply to test results obtained in any direction in the plane of the panel. Properties not required for specific board types are marked “. With the exception
37、of swelling in thickness, internal bond after boil test (see Tables 7, 8) and bending strength after boil test (see Tables 3, 4, 8), the values given in the Tables are characterised by a moisture content in the material corresponding to a temperature of 20 C and a relative humidity of 65 %. The valu
38、es given for swelling in thickness, internal bond after boil test and bending strength after boil test are characterised by a moisture content in the material corresponding to a temperature of 20 C and a relative humidity of 65 % before the treatment (immersion in water or boil treatment). The moist
39、ure resistance of medium boards for use in humid and exterior conditions (see Tables 3, 4, 7 and 8) is assessed either as internal bond after boil test (according to EN 1087-1), with the modified procedure given in annex B, or as bending strength after boil test (according to EN 1087-1), with the mo
40、dified procedure given in annex C. These two testing procedures are regarded as equivalent alternatives. Where requirements for both procedures are given, compliance with only one set of specifications is required (see Table 8). 4.2 Requirements for general purpose boards 4.2.1 Requirements for boar
41、ds for use in dry conditions Table 2 specifies the requirements for general purpose boards for use in dry conditions, e.g. interior fitments including furniture. Table 2 Requirements for general purpose boards for use in dry conditions (types MBL and MBH) Ranges of nominal thickness (mm) Board types
42、 10 10 Property Test method Unit MBLMBHMBLMBH Swelling in thickness 24 h EN 317%20152015 Internal bondEN 319N/mm20,100,10 Bending strengthEN 310N/mm21015812 EN 622-3:2004 (E) 7 4.2.2 Requirements for boards for use in humid conditions Table 3 specifies the requirements for general purpose boards for
43、 use in humid conditions. Table 3 Requirements for general purpose boards for use in humid conditions (types MBL.H and MBH.H) Ranges of nominal thickness (mm) Board types 10 10 Property Test method Unit MBL.HMBH.HMBL.HMBH.H Swelling in thickness 24 h EN 317%15121512 Internal bondEN 319N/mm20,300,30
44、Bending strengthEN 310N/mm212181015 Bending strength after boil test EN 310 EN 1087-1 N/mm265a a For the determination of bending strength after boil test, the modified procedure given in annex C applies. Bending strength after boil test is calculated on the initial dimensions of the test piece (bef
45、ore boil treatment). 4.2.3 Requirements for boards for use in exterior conditions Table 4 specifies the requirements for general purpose boards for use in exterior conditions. Table 4 Requirements for general purpose boards for use in exterior conditions (types MBL.E and MBH.E) Ranges of nominal thi
46、ckness (mm) Board types 10 10 Property Test method Unit MBL.EMBH.EMBL.EMBH.E Swelling in thickness 24 h EN 317% 97 97 Internal bondEN 319N/mm20,300,30 Bending strengthEN 310N/mm214181218 Modulus of elasticity in bending EN 310N/mm22 2002 200 Bending strength after boil testa EN 310 EN 1087-1 N/mm266
47、 a For the determination of bending strength after boil test, the modified procedure given in annex C applies. Bending strength after boil test is calculated on the initial dimensions of the test piece (before boil treatment). EN 622-3:2004 (E) 8 4.3 Requirements for load-bearing boards 4.3.1 Genera
48、l Requirements for load-bearing boards are only applicable to high-density medium boards of the generic type MBH. 4.3.2 Requirements for boards for use in dry conditions Table 5 specifies the requirements for load-bearing boards for use in dry conditions for all load duration categories. Table 5 Req
49、uirements for load-bearing boards for use in dry conditions (type MBH.LA1) Ranges of nominal thickness (mm) Property Test method Unit 10 10 Swelling in thickness 24 hEN 317%1515 Internal bondEN 319N/mm20,100,10 Bending strengthEN 310N/mm21815 Modulus of elasticity in bending EN 310N/mm21 8001 600 If it is made known by the purchaser that the boards are intended for specific use in flooring, walls or roofing, the performance