BS EN 912-2011 Timber fasteners Specifications for connectors for timbers《木质紧固件 木材连接器规范》.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 912:2011Timber fasteners Specifications for connectorsfor timbersBS EN 912:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 912:20

2、11. Itsupersedes BS EN 912:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/518, Structural timber.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all th

3、e necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 73129 7ICS 21.060.99; 91.080.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy

4、and Strategy Committee on 31 July 2011.Amendments issued since publicationDate Text affectedBS EN 912:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 912 July 2011 ICS 21.060.99; 91.080.20 Supersedes EN 912:1999English Version Timber fasteners - Specifications for connectors for timbers Org

5、anes dassemblage pour le bois - Spcifications des assembleurs pour bois Holzverbindungsmittel - Spezifikationen fr Dbel besonderer Bauart fr Holz This European Standard was approved by CEN on 17 June 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the

6、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 CEN-CENELEC Management Centre or to any CEN member. This European Standard e

7、xists 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national

8、standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland

9、and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 912:

10、2011: EBS EN 912:2011EN 912:2011 (E) 2 Contents Page Foreword 41 Scope 52 Normative references 53 Terms and definitions .54 Symbols 65 Requirements .75.1 General 75.2 Classification and requirements of connectors .76 Marking .7Annex A (normative) Specifications for ring connectors .8A.1 Type A1 .8A.

11、1.1 Description and dimensions .8A.1.2 Material .9A.2 Type A2 .9A.2.1 Description and dimensions .9A.2.2 Material 10A.3 Type A3 11A.3.1 Description and dimensions 11A.3.2 Material 12A.4 Type A4 12A.4.1 Description and dimensions 12A.4.2 Material 14A.5 Type A5 14A.5.1 Description and dimensions 14A.5

12、.2 Material 16A.6 Type A6 16A.6.1 Description and dimensions 16A.6.2 Material 18Annex B (normative) Specifications for plate connectors . 19B.1 Type B1 19B.1.1 Description and dimensions 19B.1.2 Material 19B.2 Type B2 21B.2.1 Description and dimensions 21B.2.2 Material 21B.3 Type B3 23B.3.1 Descript

13、ion and dimensions 23B.3.2 Material 23B.4 Type B4 25B.4.1 Description and dimensions 25B.4.2 Material 26Annex C (normative) Specifications for toothed-plate connectors 27C.1 Type C1 27C.1.1 Description and dimensions 27C.1.2 Material 28C.2 Type C2 29C.2.1 Description and dimensions 29BS EN 912:2011E

14、N 912:2011 (E) 3 C.2.2 Material . 30C.3 Type C3 . 30C.3.1 Description and dimensions 30C.3.2 Material . 32C.4 Type C4 . 32C.4.1 Description and dimensions 32C.4.2 Material . 34C.5 Type C5 . 34C.5.1 Description and dimensions 34C.5.2 Material . 35C.6 Type C6 . 35C.6.1 Description and dimensions 35C.6

15、.2 Material . 36C.7 Type C7 . 37C.7.1 Description and dimensions 37C.7.2 Material . 38C.8 Type C8 . 38C.8.1 Description and dimensions 38C.8.2 Material . 39C.9 Type C9 . 40C.9.1 Description and dimensions 40C.9.2 Material . 41C.10 Type C10 . 41C.10.1 Description and dimensions 41C.10.2 Material . 43

16、C.11 Type C11 . 43C.11.1 Description and dimensions 43C.11.2 Material . 44Annex D (normative) Specifications for other connectors . 46D.1 Type D1 . 46D.1.1 Description . 46D.1.2 Material . 47BS EN 912:2011EN 912:2011 (E) 4 Foreword This document (EN 912:2011) has been prepared by Technical Committee

17、 CEN/TC 124 “Timber structures”, the secretariat of which is held by AFNOR. 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 January 2012, and conflicting national standards shall be withdrawn at t

18、he latest by January 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 912:1999. The following signifi

19、cant technical changes have been introduced in the new edition of this European Standard: a) the EN 912:1999/AC:2000 corrigendum is included, b) modifications regarding newer EN reference standards, steel material and tolerances. According to the CEN/CENELEC Internal Regulations, the national standa

20、rds organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Po

21、land, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 912:2011EN 912:2011 (E) 5 1 Scope This European Standard specifies the dimensions and the materials of certain well-established connectors for use in joints between members in load-bearing timber st

22、ructures. For data on strength and deformation properties of joints made with the connectors, reference is given to EN 13271. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For un

23、dated references, the latest edition of the referenced document (including any amendments) applies. EN 1561, Founding Grey cast irons EN 1562, Founding Malleable cast irons EN 1706, Aluminium and aluminium alloys Castings Chemical composition and mechanical properties EN 10025, Hot rolled products o

24、f structural steels (all parts) EN 10131, Cold rolled uncoated and zinc or zinc-nickel electrolytically coated low carbon and high yield strength steel flat products for cold forming Tolerances on dimensions and shape EN 10139, Cold rolled uncoated mild steel narrow strip for cold forming Technical

25、delivery conditions EN 10140, Cold rolled narrow steel strip Tolerances on dimensions and shape EN 10143, Continuously hot-dip coated steel sheet and strip Tolerances on dimensions and shape EN 10268, Cold rolled steel flat products with high yield strength for cold forming Technical delivery condit

26、ions EN 10346, Continuously hot-dip coated steel flat products Technical delivery conditions EN 13271, Timber fasteners Characteristic load-carrying capacities and slip-moduli for connector joints 3 Terms and definitions For the purpose of this document, the following terms and definitions apply. 3.

27、1 connector device generally consisting of a plate, toothed-plate or ring which, when partly embedded in each or in one of the contact faces of two members and held together by a connecting bolt, is capable of transmitting a load from one member to another 3.2 double-sided connector connector symmet

28、rical in cross-section and embedded into each contact face of two adjacent timber members BS EN 912:2011EN 912:2011 (E) 6 3.3 single-sided connector connector embedded into a timber contact face only on one side 3.4 ring connector double-sided connector formed as a closed ring or a ring cut at one p

29、lace on its circumference 3.5 plate connector single-sided connector made of a circular plate with a flange along the circumference of one side of the plate 3.6 toothed-plate connector connector made of a plate with triangular teeth along the edges of the plate or with spikes on the plate; a toothed

30、-plate connector may be double-sided or single-sided 4 Symbols In this European Standard, the following symbols are used with suitable subscripts where necessary: a width of cut; distance; offset distance, in millimetre; a1length of tongue; distance between screw holes, in millimetre; a2depth of ton

31、gue; depth of countersink, in millimetre; a3depth of slot, in millimetre; d1diameter of centre hole (bolt-hole), in millimetre; d2diameter of screw holes; diameter of nail holes; diameter of inner teeth circle, in millimetre; d3outside diameter of hub; diameter of outer teeth circle, in millimetre;

32、d4diameter of perforations, in millimetre; dcdiameter, diameter of plate; h1height of straight portion; height of straight portion outside of flange; height of hub above plate, in millimetre; hcheight; total height, in millimetre; r radius, in millimetre; t thickness, thickness of plate; maximum thi

33、ckness of plate and flange, in millimetre; t1minimum thickness of plate; thickness of plate, in millimetre; t2thickness of notch, in millimetre. BS EN 912:2011EN 912:2011 (E) 7 5 Requirements 5.1 General Connectors shall be marked in accordance with Clause 6. Depending on the environmental condition

34、s the connectors shall be given an anti-corrosion treatment of a type to be agreed between the purchaser and the manufacturer. 5.2 Classification and requirements of connectors The connectors are classified into the following four groups: Group A Ring connectors; see Annex A; Group B Plate connector

35、s; see Annex B; Group C Toothed-plate connectors; see Annex C; Group D Other connectors; see Annex D. The annexes A to D specify the dimensions and specifications for materials for these 4 groups. 6 Marking Every delivery unit shall be marked by the manufacturer. The marking shall contain the number

36、 of this European Standard, i.e. EN 912 and the number of the connector according to the annex to this European Standard. Furthermore, the nominal dimension (e.g. the nominal diameter) shall be marked. BS EN 912:2011EN 912:2011 (E) 8 Annex A (normative) Specifications for ring connectors A.1 Type A1

37、 A.1.1 Description and dimensions A ring connector of type A1 (see Figure A.1) is a closed ring connector with a cross-sectional area like a lens. The dimensions shall comply with Table A.1. Figure A.1 Connector of type A1 BS EN 912:2011EN 912:2011 (E) 9 Table A.1 Dimensions of connectors of type A1

38、 Dimensions in millimetres Diameter Height Thickness Radius dchct r 65 30 5 5080 30 6 50 95 30 6 60126 30 6 60 128 45 8 60160 45 10 60 190 45 10 60Tolerances on all dimensions: 0,5. A.1.2 Material Ring connectors of type A1 are made of aluminium casting alloy EN AC-AlSi9Cu3(Fe) according to EN 1706.

39、 A.2 Type A2 A.2.1 Description and dimensions A ring connector of type A2 (see Figure A.2) is a connector with parallel sides cut at one place on its circumference to form a tongue and a slot. The dimensions shall comply with Table A.2. BS EN 912:2011EN 912:2011 (E) 10 Figure A.2 Connector of type A

40、2 Table A.2 Dimensions of connectors of type A2 Dimensions in millimetres Nominal diameter Diameter Height Thickness Length of tongue Depth of tongue Depth of slotdchct a1a2a364 72,0 19,0 4,1 9,0 6,5 7,0 Tolerances: Diameter dc 0,75 Thickness t 0,10 Other dimensions 0,25 A.2.2 Material Ring connecto

41、rs of type A2 are made of hot or temper rolled steel strip of steel alloy HRMS Grade Fe430 according to EN 10025-1 to -6. BS EN 912:2011EN 912:2011 (E) 11 A.3 Type A3 A.3.1 Description and dimensions A ring connector of type A3 (see Figure A.3) is a connector with double bevelled sides cut at one pl

42、ace on its circumference to form a tongue and a slot. The dimensions shall comply with Table A.3. Key 1 round milled edge, radius r Figure A.3 Connector of type A3 BS EN 912:2011EN 912:2011 (E) 12 Table A.3 Dimensions of connectors of type A3 Dimensions in millimetres Nominal diameter Diameter Heigh

43、t Thickness Height of straight portion Radius Length of tongue Depth of tongue Depth of slot dchct h1r a1a2a364 72,0 19,0 4,1 6,5 1,5 9,0 6,5 7,0 102 112,0 25,4 4,9 8,3 1,7 9,0 8,3 9,0 Tolerances: Diameter dc 0,75 Thickness t 0,10 Other dimensions 0,25 A.3.2 Material Ring connectors of type A3 are m

44、ade of hot or temper rolled steel strip of steel alloy HRMS Grade Fe430A according to EN 10025-1 to -6. A.4 Type A4 A.4.1 Description and dimensions A ring connector of type A4 (see Figure A.4) is a connector with double bevelled sides. In every connector except the smallest, a V-shaped cut is made

45、at one place on its circumference. The angle between the direction of cut and the direction of circumference is 45. The dimensions shall comply with Table A.4. BS EN 912:2011EN 912:2011 (E) 13 Figure A.4 Connector of type A4 BS EN 912:2011EN 912:2011 (E) 14 Table A.4 Dimensions of connectors of type

46、 A4 Dimensions in millimetres Diameter Height Thickness Radius Width of cut dchct r a 60 18 5 36 a80 22 6 48 2 100 26 7 60 2 120 30 8 72 2 140 36 9 84 4 160 40 10 96 4 180 46 10 108 4 200 50 11 120 4 Limit deviations: Diameter dc b0,15,0+Tolerances: Height hc 0,5 for hc40 Thickness t 0,5 for t 10 An

47、gle 45 1 aWithout cut. bTolerances on cast ring before splitting. A.4.2 Material Ring connectors of type A4 are made of grey cast iron EN-GJL-150 or EN-GJL-200 (Material number: EN-JL 1020 or EN-JL 1030) according to EN 1561. A.5 Type A5 A.5.1 Description and dimensions A ring connector of type A5 (

48、see Figure A.5) is a connector with a rectangular cross-section. It is cut at one place on its circumference so that the ends are in a V-shape. The dimensions shall comply with Table A.5. BS EN 912:2011EN 912:2011 (E) 15 Figure A.5 Connector type of A5 BS EN 912:2011EN 912:2011 (E) 16 Table A.5 Dime

49、nsions of connectors of type A5 Dimensions in millimetres Diameter Height Thicknessdchct 88 20 4 108 24 4 130 27 5 152 30 6 174 33 7 196 36 8 216 40 8 236 45 8 260 50 10 Tolerances: Diameter dc a+ 1,0 Height hc 0,75 for hc36 Thickness t 0,5 aTolerances on cast ring before splitting. A.5.2 Material Ring connectors of type A5 are made of hot roll

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