【BS英国标准】BS EN 634-1-1995 Cement-bonded particle boards — Specification — Part 1 General requirements.doc

british standard bs en634-1:1995cement-bonded particle boards specification part 1: general requirementsthe european standard en 634-1:1995 has the status of abritish standardics 79.060.20bs en 634-1:1995committees responsible for thisbritish standardthe preparation of this british standard was entrusted to technical committee b/541, wood based panels, upon which the following bodies were represented:apa/engineered wood associationassociation of british plywood and veneer manufacturersbritish woodworking federationcouncil of the forest industries of british columbiadepartment of the environment (building research establishment) finnish plywood internationalflat roofing contractors advisory boardforestry commissionfurniture industry research associationinstitution of structural engineerslocal authority organizationsmineral bonded board products federation national federation of roofing contractors national house-building councilnational panel products association royal institute of british architects structural board associationtimber research and development associationtimber trade federationwood panel products federationzurich municipal building guaranteeco-opted membersthis 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 on15 december 1995 bsi 09-1999the following bsi references relate to the work on this standard:committee reference b/541draft for comment 92/11485 dcisbn 0 580 24790 2amd. no.datecommentsamendments issued since publicationbs en 634-1:1995contentspage committees responsibleinside front cover national forewordii foreword 2text of en 634-13 bsi 09-1999ibs en 634-1:1995national forewordthis part of bs en 634 has been prepared by technical committee b/541 and is the english language version of en 634-1:1995 published by the european committee for standardization (cen).cross-referencespublications referred to corresponding british standardsen 322:1992bs en 322:1993 wood-based panels determination of moisture contentbs en 324 wood-based panels determination of dimensions of boardsen 324-1:1993part 1:1993 determination of thickness, width and lengthen 324-2:1993part 2:1993 determination of squareness and edge straightnessen 326-1:1993bs en 326-1:1994 sampling and cutting of test pieces and expression of test resultsen 633:1993bs en 633:1994 cement-bonded particleboards definition and classificationa 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 itself confer immunity from legal obligations.summary of pagesthis document comprises a front cover, an inside front cover, pages i and ii, the en title page, pages 2 to 4 and a back cover.this standard has been updated (see copyright date) and may have had amendments incorporated. this will be indicated in the amendment table on the inside front cover. bsi 09-1999iieuropean standard norme europenneeuropische normen 634-1march 1995ics 79.060.20descriptors: particleboards, wooden boards, hydraulic binders, cements, specifications, characteristicsenglish versioncement-bonded particleboards specification part 1: general requirementspanneaux de particles lies au ciment exigences partie 1: exigences gnraleszementgebundene spanplatten anforderungen teil 1: allgemeine anforderungenthis european standard was approved by cen on 1995-03-07. 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 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 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 central secretariat has the same status as the official versions.cen members are the national bodies of austria, belgium, denmark, finland, france, germany, greece, iceland, ireland, italy, luxembourg, netherlands, norway, portugal, spain, sweden, switzerland and united kingdom.ceneuropean committee for standardization comit europen de normalisation europisches komitee fr normungcentral secretariat: rue de stassart 36, b-1050 brussels 1995 all rights of reproduction and communication in any form and by any means reserved in all countries to cen and its membersref. no. en 634-1:1995 een 634-1:1995 bsi 09-1999forewordthis european standard has been prepared by the technical committee cen/tc 112, wood-based panels, of which the secretariat is held by din.this standard is part 1 of a two-part standard specifying requirements for cement-bonded particleboards.the second part isen 634-2cement-bonded particleboards specifications part 2: requirements for opc bonded particleboards for use in dry, humid and exterior conditionsthis 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 september 1995, and conflicting national standards shall be withdrawn at the latest by september 1995.according to the cen/cenelec internal regulations, the following countries are bound to implement this european standard: austria, belgium, denmark, finland, france, germany, greece, iceland, ireland, italy, luxembourg, netherlands, norway, portugal, spain, sweden, switzerland and united kingdom.contentspageforeword21scope32normative references33required properties34verification of compliance35marking 3annex a (informative) bibliography4table 1 general requirements at dispatch3table 2 test methods3en 634-1:19951 scopethis european standard specifies general requirements for cement-bonded particleboards. the boards are defined in en 633.2 normative referencesthis european standard incorporates by dated 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 standard only when incorporated in it by amendment or revision. for undated references the latest edition of the publication referred to applies.en 322, wood-based panels determination of moisture content.en 324-1, wood-based panels determination of dimensions of boards part 1: determination of thickness, width and length.en 342-2, wood-based panels determination of dimensions of boards part 2: determination of squareness and edge straightness.en 326-1, wood-based panels sampling, cutting and inspection part 1: sampling and cutting of test pieces and expression of test results.en 633, cement-bonded particleboards definitions and classification.en 634-2, cement-bonded particleboards specifications part 2: requirements for opc bonded particleboards for use in dry, humid andexterior conditions1).3 required propertiescement-bonded particleboards shall comply with the general requirements listed in table 1 at the time of dispatch from the manufacturer.4 verification of complianceverification of compliance with this en shall be assessed using test methods listed in table 2. sampling and cutting of the test pieces shall be carried out according to en 326-1.table 2 test methodspropertyen standarddimensional tolerancestolerances for edge straightness and squarenessmoisture contenten 324-1en 324-2en 3225 markingmarking of the boards shall be according toen 634-2.table 1 general requirements at dispatchpropertyrequirementdimensional tolerances on nominal thickness t (sanded)within board and between boards thickness t (unsanded) 12 mm within board and between boards12 mm k t 15 mm15 mm k t 19 mmu 19 mm length and width edge straightness tolerance squareness tolerance moisture content 0,3 mm 0,7 mm 1,0 mm 1,2 mm 1,5 mm 5 mm1,5 mm per m2 mm per m6 % to 12 %1) at present at the draft stage. bsi 09-19993en 634-1:1995annex a (informative) bibliographyen 326-2, wood-based panels sampling, cutting and inspection part 2: quality control in the factory2). en 326-3, wood-based panels sampling, cutting and inspection part 3: inspection of a consignmentof panels2).2) at present at the draft stage. bsi 09-19995blankbs en634-1:1995bsi389 chiswick high roadlondonw4 4albsi british standards institutionbsi is the independent national body responsible for preparingbritish standards. it presents the uk view on standards in europe and at the international level. it is incorporated by royal charter.revisionsbritish standards are updated by amendment or revision. users ofbritish standards should make sure that they possess the latest amendments 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