【BS英國標(biāo)準(zhǔn)word原稿】BS EN 1382-1999 Timber structures. Test methods. Withdrawal capacity of timber fasteners.doc

，如果你需要更多標(biāo)準(zhǔn)可以到/kmust1進行免費查閱。 如果你購買的文檔存在缺頁、字跡模糊、亂碼等情況，請大家通過論壇消息與我聯(lián)系。british standardtimber structures test methods withdrawal capacity of timber fastenersthe european standard en 1382:1999 has the status of abritish standardics 91.080.20| bs en1382:1999| ，如果你需要更多標(biāo)準(zhǔn)可以到/kmust1進行免費查閱。 如果你購買的文檔存在缺頁、字跡模糊、亂碼等情況，請大家通過論壇消息與我聯(lián)系。licensed copy: sheffieldun sheffieldun, na, mon oct 30 05:44:52 gmt+00:00 2006, uncontrolled copy, (c) bsi|no copying without bsi permission except as permitted by copyright lawbs en 1382:1999national forewordthis british standard is the english language version of en 1382:1999. bs en 1380, bs en 1381, bs en 1382 and bs en 1383 together form a group of standards that supersede the tests for category a fasteners given in bs 6948:1989, methods of test for mechanically fastened joints in timber and wood-based materials, which will be deleted.the uk participation in its preparation was entrusted by technical committee b/518, structural timber, to subcommittee b/518/1, test methods, 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 international and european developments and promulgate them in the uk.a list of organizations represented on this subcommittee can be obtained on request to its secretary.cross-referencesthe 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 correspondence index, or by using thefind 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 itself confer immunity from legal obligations.summary of pagesthis document comprises a front cover, an inside front cover, the en title page, pages 2 to 5 and a back cover.the bsi copyright notice displayed throughout this document indicates when the document was last issued.licensed copy: sheffieldun sheffieldun, na, mon oct 30 05:44:52 gmt+00:00 2006, uncontrolled copy, (c) bsiamd. no.datecommentsthis british standard, having been prepared under the direction of the sector committee for building and civilengineering, was published under the authority of the standards committee and comes into effect on 15 december 1999bsi 12-1999isbn 0 580 32888 0amendments issued since publicationeuropean standarden 1382norme europe enneeuropa ische normaugust 1999ics 91.080.20english versiontimber structures test methods withdrawal capacity of timber fastenersstructures en bois me thodes dessai re sistance a larrachement dans le bois de le ments de fixationholzbauwerke pru fverfahren ausziehtragfa higkeit von holzverbindungsmittelnlicensed copy: sheffieldun sheffieldun, na, mon oct 30 05:44:52 gmt+00:00 2006, uncontrolled copy, (c) bsithis european standard was approved by cen on 11 july 1999.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 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.ceneuropean committee for standardization comite europe en de normalisation europa isches komitee fu r normungcentral secretariat: rue de stassart 36, b-1050 brussels1999 cen all rights of exploitation in any form and by any means reserved worldwide for cen nationalmembers.ref. no. en 1382:1999 epage 5en 1382:1999bsi 12-1999forewordthis european standard has been prepared bytechnical committee cen/tc 124, timber structures,contentspagelicensed copy: sheffieldun sheffieldun, na, mon oct 30 05:44:52 gmt+00:00 2006, uncontrolled copy, (c) bsithe secretariat of which is held by ds.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 february 2000, and conflicting national standards shall be withdrawnat the latest by february 2000.according to the cen/cenelec internal regulations, the national 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.this standard is one of a series of standards for test methods for building materials and components. it was prepared by a working group under the convenorship of national standards authority of ireland, nsai.this standard is based on part of iso/dis 9708, timber structures joints with mechanical fasteners testing of joints with nails or staplesforeword 21scope 32normative references 33definitions 34symbols 35materials 45.1timber 45.2fasteners 46test methods 46.1general 46.2conditioning 46.3fabrication of test pieces 46.4preparation of test pieces 46.5test procedure 46.6test result 46.7test report 5licensed copy: sheffieldun sheffieldun, na, mon oct 30 05:44:52 gmt+00:00 2006, uncontrolled copy, (c) bsi1 scopethis standard specifies the test method for determining the withdrawal capacity of fasteners which have been inserted into timber (solid timber and glued laminated timber).the test method applies to all types of nails, screws and staples.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 onlywhen incorporated in it by amendment or revision. for undated references the latest edition of the publication referred to applies.en 1381, timber structures test methods load bearing stapled joints.en 26891:1991, timber structures joints made with mechanical fasteners general principles for the determination of strength and deformation characteristics.(iso 6891:1983)en 28970, timber structures testing of joints made with mechanical fasteners requirements for wood density.(iso 8970:1989)iso 3130, wood determination of moisture content for physical and mechanical tests.iso 3131, wood determination of density for physical and mechanical tests.3 definitionsfor the purposes of this standard, the following definitions apply.3.1 stapledouble-bent, u-shaped piece of round, square, rectangular or oval wire with pointed legs3.2staple crownconnection between the two staple legs3.3staple leg diameterdiameter of a round staple leg or the smaller dimension of a rectangular or oval staple leg3.4staple lengthlength of each staple leg, including point3.5staple widthwidth across the staple legs, see figure 13.6withdrawal parameterparameter measuring the resistance of a timber test piece to the withdrawal of a timber fastener4 symbolsfor symbols relating to staples, see en 1381.a staple width, see figure 1, in millimetres.d diameter of the smooth plain part of a round nail or screw or the smaller dimension of an oval or rectangular fastener in millimetres.fmax maximum withdrawal load in newtons.f withdrawal parameter in newtons per square millimetre.lp the depth of penetration of fastener, including the point, in millimetres. in the case of profiled fasteners, the depth of penetration of the profiled part.acrn angle between the direction of a staple crown and the grain direction or the main direction of the wood-based products, respectively, see figure 2, in degrees.figure 1 staple dimensionsnote this means that where staples are tested in test pieces of solid timber, the total number of test pieces should be quartered, each quarter of the test pieces being as follows:figure 2 angle between the staple direction and the grain direction (1)5 materials5.1 timberthe timber (solid timber or glued laminated timber) shall be selected in accordance with either of the methods given in en 28970.5.2 fastenersthe specification of nails, screws or staples shall be established.6 test methods6.1 generalthe moisture content and density of the timber at test shall be determined as specified in iso 3130and iso 3131 as appropriate.6.2 conditioningthe test pieces shall be manufactured with the timber- or wood-based products at an equilibrium moisture content corresponding to (20 2) 8c and (65 5) % relative humidity. the material is conditioned when it attains constant mass. constant mass is considered to be attained when the results of two successive weighings, carried out at an interval of 6 h, do not differ by more than 0,1 % of the mass of the material.for certain investigations, other moisture conditioning can be appropriate and shall be reported.6.3 fabrication of test pieces6.3.1 fastener axis perpendicular to the grainthe axis of the fastener shall be perpendicular to the timber surface. the insertion of fasteners shall follow normal preparation (e.g. pre-boring) and practice. the width and depth of the test piece in the direction of insertion of the fastener shall be at least (lp + 5d),see figure 3. where the test pieces are of solid timber,staple inserted radially to growth rings and acrn = 08; staple inserted radially to growth rings and acrn = 908; staple inserted tangentially to growth rings and acrn = 08; staple inserted tangentially to growth rings and acrn = 90 fastener axis parallel to the grainthe axis of the fastener shall be perpendicular to the timber surface. the insertion of fasteners shall follow normal preparation (e.g. pre-boring) and practice. the length of the test piece in the direction of insertion of the fastener shall be at least (2lp + 5d), see figure 4.note this test method can also be used with the fasteners inserted into the timber at angles of between 08 and 908 to the grain direction.6.4 preparation of test pieces6.4.1 load perpendicular to the grainthe test pieces shall comply with figure 3. the fasteners shall be driven to a penetration of between8d and 20d and shall be positioned as shown.note the range of depth penetration is given so that the depth of penetration used in the test can be decided depending on the withdrawal resistance and the tensile capacity of the fastener. a depth of penetration of at least 12d is appropriate to fasteners of d less than 2 mm.6.4.2 load parallel to the grainthe test pieces shall comply with figure 4. the fasteners shall be driven into the end grain to a penetration of between 8d and 20d and shall be positioned as shown.note a depth of penetration of at least 12d is appropriate to fasteners of d less than 2 mm.6.5 test procedurethe apparatus used shall be as required in clause 7 of en 26891:1991. determine the depth of the fastener penetration lp. place the test piece in a device ensuring the application of the withdrawal force along the axis of the fastener or the axes of the staple legs. any part of the supports shall be not closer to the axis of the fastener than 3d for nails and screws and a for staples.the withdrawal test shall be performed with a constant rate of loading. when determining the withdrawal parameter, f, the rate of loading shall be such that the time taken to reach fmax is (90 30) s. determine fmax to an accuracy of 1 %.6.6 test resultthe withdrawal parameters, shall be determined from the equations:half of the fasteners shall be inserted radially to the growth rings and half tangentially to the growth rings. for staples, half of the tests shall be carried outf = fmaxd 3 lpfmaxfor nails or screws;licensed copy: sheffieldun sheffieldun, na, mon oct 30 05:44:52 gmt+00:00 2006, uncontrolled copy, (c) bsiwith acrn = 08 and the other half with acrn = 908.f = d 3 2lp for staples.the symbols are as given in clause 4.figure 3 withdrawal test pieces load perpendicular to grainfigure 4 withdrawal test pieces load parallel to grainlicensed copy: sheffieldun sheffieldun, na, mon oct 30 05:44:52 gmt+00:00 2006, uncontrolled copy, (c) bsi6.7 test reportthe test report shall contain the following information:a) sampling procedure;b) specification of the timber;c) dimensions, density, moisture content and conditioning of the test pieces;d) diagram showing the layout of the fasteners and the method of insertion used in the test pieces;e) angle, acrn, between staple crown and grain as used in the test;f) number of test pieces used;g) specification and number of fasteners tested (type, sizes, material, surface coating or condition and other particulars);h) time to failure;i) individual test results, including fmax, mean values and standard deviations, and description of themode of failure.bs en|1382:1999bsi389 chiswick high roadlondonw4 4al| bsi british standards institution| bsi is the independent national body responsible for preparing british standards. it| presents the uk view on standards in europe and at the international level. it is| incorporated by royal charter.| revisions| british standards are updated by amendment or revision. users of british standards| should make sure that they possess the 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