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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1382:1999 The Europ
2、ean Standard EN 1382:1999 has the status of a British Standard ICS 91.080.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Timber structures Test methods Withdrawal capacity of timber fasteners This British Standard, having been prepared under the direction of the Sector Com
3、mittee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 December 1999 BSI 12-1999 ISBN 0 580 32888 0 BS EN 1382:1999 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the Eng
4、lish 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 dele
5、ted. 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,
6、 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-references The British Standards which impl
7、ement 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 the Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport
8、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 pages This document comprises a front cover, an inside front cover
9、, 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. CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Sta
10、ssart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1382:1999 E EUROPEAN STANDARDEN 1382 NORME EUROPE ENNE EUROPA ISCHE NORM August 1999 ICS 91.080.20 English version Timber structures Test methods Withdr
11、awal capacity of timber fasteners Structures en bois Me thodes dessai Re sistance a larrachement dans le bois de le ments de fixation Holzbauwerke Pru fverfahren Ausziehtragfa higkeit von Holzverbindungsmitteln This European Standard was approved by CEN on 11 July 1999. CEN members are bound to comp
12、ly 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 Sec
13、retariat 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 off
14、icial 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. Page 2 EN 1382:1999 BSI 12-1999 Foreword Th
15、is European Standard has been prepared by Technical Committee CEN/TC 124, Timber structures, the 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,
16、and conflicting national standards shall be withdrawn at 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,
17、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 convenors
18、hip 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 staples Contents Page Foreword2 1Scope3 2Normative references3 3Definitions3 4Symbols3 5Materials4 5.1Timber4 5.2Fa
19、steners4 6Test methods4 6.1General4 6.2Conditioning4 6.3Fabrication of test pieces4 6.4Preparation of test pieces4 6.5Test procedure4 6.6Test result4 6.7Test report5 Page 3 EN 1382:1999 BSI 12-1999 Figure 1 Staple dimensions 1 Scope This standard specifies the test method for determining the withdra
20、wal 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 references This European Standard incorporates by dated or undated reference, provisions from other publications. T
21、hese 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 und
22、ated 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.
23、 (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.
24、3 Definitions For the purposes of this standard, the following definitions apply. 3.1 staple double-bent, u-shaped piece of round, square, rectangular or oval wire with pointed legs 3.2 staple crown connection between the two staple legs 3.3 staple leg diameter diameter of a round staple leg or the
25、smaller dimension of a rectangular or oval staple leg 3.4 staple length length of each staple leg, including point 3.5 staple width width across the staple legs, see Figure 1 3.6 withdrawal parameter parameter measuring the resistance of a timber test piece to the withdrawal of a timber fastener 4 S
26、ymbols For symbols relating to staples, see EN 1381. aStaple width, see Figure 1, in millimetres. dDiameter of the smooth plain part of a round nail or screw or the smaller dimension of an oval or rectangular fastener in millimetres. FmaxMaximum withdrawal load in newtons. fWithdrawal parameter in n
27、ewtons per square millimetre. lpThe depth of penetration of fastener, including the point, in millimetres. In the case of profiled fasteners, the depth of penetration of the profiled part. acrnAngle between the direction of a staple crown and the grain direction or the main direction of the wood-bas
28、ed products, respectively, see Figure 2, in degrees. Page 4 EN 1382:1999 BSI 12-1999 Figure 2 Angle between the staple direction and the grain direction (1) 5 Materials 5.1 Timber The timber (solid timber or glued laminated timber) shall be selected in accordance with either of the methods given in
29、EN 28970. 5.2 Fasteners The specification of nails, screws or staples shall be established. 6 Test methods 6.1 General The moisture content and density of the timber at test shall be determined as specified in ISO 3130 and ISO 3131 as appropriate. 6.2 Conditioning The test pieces shall be manufactur
30、ed with the timber- or wood-based products at an equilibrium moisture content corresponding to (202) 8C and (655) % 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
31、 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 pieces 6.3.1 Fastener axis perpendicular to the grain The axis of the fastener shall be perpendicu
32、lar 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, half of the f
33、asteners shall be inserted radially to the growth rings and half tangentially to the growth rings. For staples, half of the tests shall be carried out with acrn= 08 and the other half with acrn= 908. NOTEThis means that where staples are tested in test pieces of solid timber, the total number of tes
34、t pieces should be quartered, each quarter of the test pieces being as follows: 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 a
35、crn= 908. 6.3.2 Fastener axis parallel to the grain The 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
36、 least (2lp+ 5d), see Figure 4. NOTEThis 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 pieces 6.4.1 Load perpendicular to the grain The test pieces shall comply with Figure 3. The fasteners sha
37、ll be driven to a penetration of between 8d and 20d and shall be positioned as shown. NOTEThe 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 o
38、f at least 12d is appropriate to fasteners of d lessthan2 mm. 6.4.2 Load parallel to the grain The 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. NOTEA depth of penetration of at least
39、12d is appropriate to fasteners of d less than 2 mm. 6.5 Test procedure The 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 fa
40、stener 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 sh
41、all be such that the time taken to reach Fmaxis (9030) s. Determine Fmaxto an accuracy of 1 %. 6.6 Test result The withdrawal parameters, shall be determined from the equations: f =for nails or screws; Fmax d 3 lp f =for staples. Fmax d 3 2lp The symbols are as given in clause 4. Page 5 EN 1382:1999
42、 BSI 12-1999 Figure 3 Withdrawal test pieces Load perpendicular to grain Figure 4 Withdrawal test pieces Load parallel to grain 6.7 Test report The test report shall contain the following information: a) sampling procedure; b) specification of the timber; c) dimensions, density, moisture content and
43、 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, mater
44、ial, 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 the mode of failure. BS EN 1382:1999 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | |
45、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for pre
46、paring 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 latest amendments or editi
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