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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 622-2 : 1997 The Eu
2、ropean Standard EN 622-2 : 1997 has the status of a British Standard ICS 79.060.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Fibreboards Specifications Part 2. Requirements for hardboards Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 15:42:57 GMT+00:00 2006, Unc
3、ontrolled Copy, (c) BSI This British Standard, having been prepared 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 October 1997 BSI 1997 ISBN 0 580 28607 X BS EN 622-2 : 1997 Amendments
4、issued since publication Amd. No.DateText affected National foreword This British Standard is the English language version of EN 622-2 : 1997. The UK participation in its preparation was entrusted to Technical Committee B/541, Wood based panels, which has the responsibility to: aid enquirers to unde
5、rstand 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 international and European developments and promulgate them in the UK. A list of organizations represented on this committe
6、e can be obtained on request to its secretary. BS EN 622-1, BS EN 622-2, BS EN 622-3, BS EN 622-4 and BS EN 622-5 together supersede BS 1142 : 1989, (with the exception of appendix C, Common uses of fibre building boards in the construction industry, and appendix D, Recommendations for transportatio
7、n, storage and conditioning of fibre building boards). BS 1142 will be withdrawn in accordance with CEN procedures within six months of the completion of the full package of European Standards covering fibreboards and related test methods. These standards are: EN 310 EN 316 EN 317 EN 318 EN 319 EN 3
8、20 EN 321 EN 322 EN 323 EN 324-1 EN 324-2 EN 325 EN 382-1 EN 382-2 EN 622-1 EN 622-2 EN 622-3 EN 622-4 EN 622-5 The material in appendices C and D of BS 1142 : 1989, together with corresponding material giving recommendations for storage, handling, selection and application of particleboard, OSB and
9、 cement-bonded particleboards, will be revised and re-issued in a new British Standard, at present in preparation. The values for dimensional tolerances and other properties given in this standard are in most cases determined and expressed using different methods of test and statistical procedures t
10、o those used to derive the values in BS 1142. Care should therefore be taken in drawing inferences on quality by a simple comparison of the numerical values in the two standards. Cross-references The British Standards which implement international or European publications referred to in this documen
11、t may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. NOTE. The three unnumbered publications listed at the end of annex D are currently in preparation and are no
12、w available as European Prestandards prEN 12869-2, prEN 12870-2 and prEN 12871-2 respectively. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10
13、, an inside back cover and a back cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 15:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36,
14、 B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 622-2 : 1997 E EUROPEAN STANDARDEN 622-2 NORME EUROPE ENNE EUROPA ISCHE NORM June 1997 ICS 79.060.20 Descriptors: Wooden boards, fibreboards, insulating boards,
15、characteristics, specifications, environments, humidity, conformity tests, marking English version Fibreboards Specifications Part 2: Requirements for hardboards Panneaux de fibres Exigences Partie 2: Exigences pour panneaux durs Faserplatten Anforderungen Teil 2: Anforderungen an harte Platten This
16、 European Standard was approved by CEN on 1997-04-21. 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 c
17、oncerning such national 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
18、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, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
19、Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 13 15:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 2 EN 622-2 : 1997 BSI 1997 Foreword This European Standard has been prepared by Technical Committee CEN/TC 112, Wood-based panels, the Secretariat o
20、f which is held by DIN. This standard is one of a series specifying requirements for fibreboards. The other parts of this series are listed in clause 2 and annex D. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,
21、at the latest by December 1997, and conflicting national standards shall be withdrawn at the latest by December 1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cz
22、ech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4Requirements4 5Verification of compliance7 6Marking7 A
23、nnex A (normative) Supplementary properties9 Annex B (normative) Boil test according to EN 1087-1 : 1995 Modified procedure9 Annex C (normative) Determination of bending strength after boil test according to EN 1087-1 : 1995 Modified procedure10 Annex D (informative) Bibliography10 Licensed Copy: sh
24、effieldun sheffieldun, na, Mon Nov 13 15:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 622-2 : 1997 BSI 1997 1) Such characteristic values (e.g. for use in design calculation in ENV 1995-1-1) are either given in prEN 12369 or derived by testing according to EN 789, EN 1058 and ENV 1156.
25、 1 Scope This European Standard specifies the requirements for hardboards as defined in EN 316. The values listed in this standard relate to product properties but they are not characteristic values to be used in design calculations1). 2 Normative references This European Standard incorporates, by d
26、ated or 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 Standar
27、d only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. EN 310 : 1993Wood-based panels Determination of modulus of elasticity in bending and of bending strength EN 316Wood fibreboards Definition, classification, and
28、symbols EN 317Particleboards and Fibreboards Determination of swelling in thickness after immersion in water EN 318Fibreboards Determination of dimensional changes associated with changes in relative humidity EN 319Particleboards and Fibreboards Determination of tensile strength perpendicular to the
29、 plane of the board EN 326-1Wood-based panels Sampling, cutting and inspection Part 1: Sampling and cutting of test pieces and expression of test results EN 382-2Fibreboards Determination of surface absorption Part 2: Test method for hardboards EN 622-1Fibreboards Specifications Part 1: General requ
30、irements EN 1087-1 : 1995Particleboards Moisture resistance Part 1: Boil test ISO 3340Fibre building boards Determination of sand content 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 dry conditions Conditions (defined in terms of service class 1 of ENV 1995-1
31、-1 for load-bearing boards) characterized by a moisture content in the material corresponding to a temperature of 20 C and a relative humidity of the surrounding air exceeding 65 % only for a few weeks per year. Boards of this type are suitable for use only in hazard class 1 of EN 335-3. 3.2 humid c
32、onditions Conditions (defined in terms of service class 2 of ENV 1995-1-1 for load-bearing boards) characterized by a moisture content in the material corresponding to a temperature of 20 C and a relative humidity of the surrounding air exceeding 85 % only for a few weeks per year. Boards of this ty
33、pe are suitable for use in hazard classes 1 and 2 of EN 335-3. 3.3 exterior conditions Imply exposure to weathering conditions or to liquid water or to water vapour in a damp but ventilated location. Boards of this type are suitable for use in hazard classes 1, 2 and 3 of EN 335-3. 3.4 general purpo
34、se 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 mechanical resistance and stability to the works. Also referred to as structure. Licensed Copy: sheffieldu
35、n sheffieldun, na, Mon Nov 13 15:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 4 EN 622-2 : 1997 BSI 1997 3.6 load duration category See table 1. Table 1. Load duration categories Load duration categoryOrder of accumulated duration of characteristic load Examples of loading PermanentMore tha
36、n 10 yearsSelf weight Long-term6 months to 10 yearsStorage Medium-term1 week to 6 monthsImposed load Short-termLess than 1 weekSnow*), wind InstantaneousAccidental loading *) In areas which have a heavy snow load for a prolonged period of time, part of the load should be regarded as medium-term. 4 R
37、equirements 4.1 General Hardboards shall comply with the general requirements of EN 622-1 together with the relevant requirements 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 the tables shall be met by 5 percent
38、ile values (95 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 pro
39、perties, they 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. With the exception of swelling in thickness, internal bond after boi
40、l test (see tables 3, 4, 6, 7) and bending strength after boil test (see table 7), the values given in the tables are characterized by a moisture content in the material corresponding to a temperature of 20 C and a relative humidity of 65 %. The values given for swelling in thickness, internal bond
41、after boil test and bending strength after boil test are characterized 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 moisture resistance of hardboards for use in humid and
42、exterior conditions (see tables 3, 4, 6 and 7) is assessed either as internal bond after boil test (according to EN 1087-1 : 1995) with the modified procedure given in annex B, or as bending strength after boil test (according to EN 1087-1 : 1995), with the modified procedure given in annex C. These
43、 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 7). NOTE. This procedure should only be regarded as an interim measure pending the result of a prenormative researc
44、h programme to develop a solution independent of the board composition. 4.2 Requirements for general purpose boards 4.2.1 Requirements for boards for use in dry conditions Table 2 specifies the requirements for general purpose boards for use in dry conditions, e.g. interior fitments including furnit
45、ure. Table 2. Requirements for general purpose boards for use in dry conditions (type HB) PropertyTest methodUnitRanges of nominal thickness (mm) # 3,5 3,5 to 5,5 5,5 Swelling in thickness 24 hEN 317%353025 Internal bondEN 319N/mm20,500,500,50 Bending strengthEN 310N/mm2303025 Licensed Copy: sheffie
46、ldun sheffieldun, na, Mon Nov 13 15:42:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 622-2 : 1997 BSI 1997 4.2.2 Requirements for boards for use in humid conditions Table 3 specifies the requirements for general purpose boards for use in humid conditions. Table 3. Requirements for general
47、purpose boards for use in humid conditions (type HB.H) PropertyTest methodUnitRanges of nominal thickness (mm) # 3,5 3,5 to 5,5 5,5 Swelling in thickness 24 hEN 317%252020 Internal bondEN 319N/mm20,600,600,60 Bending strengthEN 310N/mm2353230 Internal bond after boil test*)EN 319 EN 1087-1 N/mm20,30
48、0,300,25 *) EN 1087-1 : 1995 applies with the modified procedure given in annex B. 4.2.3 Requirements for boards for use in exterior conditions Table 4 specifies the requirements for general purpose boards for use in external conditions. Table 4. Requirements for general purpose boards for use in ex
49、terior conditions (type HB.E) PropertyTest methodUnitRanges of nominal thickness (mm) # 3,5 3,5 to 5,5 5,5 Swelling in thickness 24 hEN 317%12108 Internal bondEN 319N/mm20,700,600,50 Bending strengthEN 310N/mm2403532 Modulus of elasticity in bending EN 310N/mm2360031002900 Internal bond after boil test*)EN 319 EN 1087-1 N/mm20,500,420,35 *) EN 1087-1 : 1995 applies with the modified procedure given in annex B. 4.3 Requirements for load-bearing boards 4.3.1 Requirements for boards for use in dry conditions Table 5 sp
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