BS EN 15497-2014 Structural finger jointed solid timber Performance requirements and minimum production requirements《指接结构实木 性能要求和最低生产要求》.pdf

1、BSI Standards PublicationBS EN 15497:2014Structural finger jointedsolid timber Performancerequirements and minimumproduction requirementsBS EN 15497:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 15497:2014.Together with BS EN 14080:2013 it supersedes BS E

2、N 385:2001 whichis withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/518, Structural timber.A list of organizations represented on this committee can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 the necessaryprovisions

3、of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 75907 9ICS 79.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the

4、 authority of theStandards Policy and Strategy Committee on 31 May 2014.Amendments issued since publicationDate Text affectedBS EN 15497:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15497 April 2014 ICS 79.040 Supersedes EN 385:2001English Version Structural finger jointed solid timber -

5、 Performance requirements and minimum production requirements Bois massif de structure entures multiples - Exigences de performances et exigences minimales de fabrication Keilgezinktes Vollholz fr tragende Zwecke - Leistungsanforderungen und Mindestanforderungen an die Herstellung This European Stan

6、dard was approved by CEN on 6 February 2014. 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

7、 such national standards may be obtained on application to the CEN-CENELEC Management Centre 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

8、 own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, German

9、y, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR N

10、ORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15497:2014 EBS EN 15497:2014EN 15497:2014 (E) 2 Contents Page Foreword 4 Introduction .5 1 Scope 6 2 Norma

11、tive references 6 3 Terms and definitions .7 4 Symbols 9 4.1 Main symbols .9 4.2 Subscripts 9 5 Performance characteristics for structural finger jointed timber 10 5.1 Mechanical resistance 10 5.1.1 General . 10 5.1.2 Timber 10 5.1.3 Bending strength of finger joints 10 5.1.4 Related material proper

12、ties . 10 5.2 Bonding strength and durability of bonding strength 10 5.2.1 General . 10 5.2.2 Species 11 5.2.3 Adhesives for the production of structural finger jointed timber 11 5.3 Durability against biological attack 13 5.3.1 Structural finger jointed timber without preservative treatment . 13 5.

13、3.2 Structural finger jointed timber with preservative treatment . 13 5.4 Resistance to fire 13 5.5 Reaction to fire 13 5.6 Formaldehyde emission . 15 5.7 Release/content of other dangerous substances . 15 5.8 Deviation in sizes 15 6 Assessment and Verification of Constancy of Performance (AVCP) 16

14、6.1 General . 16 6.2 Type testing . 16 6.2.1 General . 16 6.2.2 Test samples, testing and compliance criteria 17 6.2.3 Test reports . 19 6.2.4 Shared other party results . 19 6.2.5 Cascading determination of the product type results 20 6.3 Factory production control (FPC) . 21 6.3.1 General . 21 6.3

15、.2 Provisions 21 6.3.3 Product specific provisions . 26 6.3.4 Initial inspection of factory and of FPC 26 6.3.5 Continuous surveillance of FPC . 27 6.3.6 Procedure for modifications 27 7 Marking and labelling . 27 Annex A (normative) Release of Formaldehyde . 29 A.1 General . 29 A.2 Classification .

16、 29 A.2.1 Provisions 29 BS EN 15497:2014EN 15497:2014 (E) 3 A.2.2 Test procedure . 29 A.2.3 Test report 30 Annex B (normative) Additional test methods and provisions for adhesives . 31 B.1 General . 31 B.2 Long-term sustained load test at cyclic climate conditions with specimens loaded perpendicular

17、 to the glue line for moisture curing one-component polyurethane and emulsion polymer isocyanate adhesives 31 B.2.1 General description . 31 B.2.2 Production of the specimens . 31 B.2.3 Test procedure and climate conditions 32 B.2.4 Provisions 33 B.2.5 Report . 33 Annex C (normative) Bending tests w

18、ith finger joints (including compliance criteria) 34 C.1 Sampling. 34 C.1.1 General . 34 C.1.2 For type testing 34 C.1.3 For factory production control . 34 C.2 Testing 34 C.2.1 General . 34 C.2.2 Additional provisions for type testing . 34 C.2.3 Additional provisions for factory production control

19、34 C.3 Compliance criteria . 35 C.3.1 For type testing 35 C.3.2 For factory production control . 35 C.4 Report . 35 Annex D (normative) Measurement of moisture content 37 D.1 General . 37 D.2 Measurement of moisture content of timber during production 37 D.3 Mean moisture content of structural finge

20、r jointed timber . 37 Annex E (normative) Equipment . 38 Annex F (normative) Separation tests with finger joints produced with contact-free application of adhesive . 39 Annex G (normative) Minimum production provisions 40 G.1 Personnel . 40 G.2 Production and storage facilities . 40 G.2.1 General .

21、40 G.2.2 Facilities for drying and storage of timber . 40 G.2.3 Facilities for processing and storage of adhesives . 40 G.2.4 Facilities for production and curing 40 G.3 Equipment 40 G.4 Finger joints . 41 G.4.1 Wane and edge damages 41 G.4.2 Finger joint geometry 42 G.4.3 Knots, local grain deviati

22、ons and fissures . 42 G.4.4 Moisture content at bonding 43 G.4.5 Bonding surface and application of the adhesive . 43 G.4.6 Time between cutting and adhesive application 44 G.4.7 Pressure . 44 G.4.8 Curing . 45 Annex ZA (informative) Clauses of this European Standard addressing the provisions of EU

23、Construction Products Regulation 46 Bibliography 57 BS EN 15497:2014EN 15497:2014 (E) 4 Foreword This document (EN 15497:2014) has been prepared by Technical Committee CEN/TC 124 “Timber structures”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a nat

24、ional standard, either by publication of an identical text or by endorsement, at the latest by October 2014, and conflicting national standards shall be withdrawn at the latest by January 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of pat

25、ent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document, along with EN 14080:2013, supersedes EN 385:2001. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association

26、, and supports basic work requirements of Regulation (EU) No 305/2011. For relationship with the EU Regulations, see informative Annex ZA, which is an integral part of this document. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries ar

27、e bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Po

28、rtugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 15497:2014EN 15497:2014 (E) 5 Introduction Figure 1 shows the relation of European Standards for structural timber products prepared by CEN/TC 124. Key 1 boards 6 glued laminated timber (glulam) 2 i

29、s a component for 7 glulam with large finger joints 3 structural finger jointed timber 8 block glued glulam 4 glued laminated products 9 cross laminated timber (X-Lam) 5 glued solid timber 10 cross laminated timber (X-Lam) with large finger joints Figure 1 Relation of European Standards for structur

30、al timber products prepared by CEN/TC 124 BS EN 15497:2014EN 15497:2014 (E) 6 1 Scope This European Standard sets out provisions regarding the performance characteristics for structural finger jointed timber with rectangular cross section for use in buildings and bridges. The use of structural finge

31、r jointed timber may be limited to certain service classes in some member states. It also lays down minimum production provisions and procedures for Assessment and Verification of Constancy of Performance for structural finger jointed timber. This European Standard is applicable to structural finger

32、 jointed timber made of coniferous timber species listed in this standard or poplar. Although it may be possible to produce structural finger jointed timber made from specific broadleaf species based on some provisions of this European Standard, this standard is not applicable to these products. Thi

33、s European Standard is only applicable to finger joints between timber sections of the same species. This European Standard does not cover impressed (die-formed) finger joints. This European Standard covers structural finger jointed timber untreated or treated against biological attack. Structural f

34、inger jointed timber treated with fire retardants is not covered. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references,

35、the latest edition of the referenced document (including any amendments) applies. EN 301:2013, Adhesives, phenolic and aminoplastic, for load-bearing timber structures Classification and performance requirements EN 302-1, Adhesives for load-bearing timber structures Test methods Part 1: Determinatio

36、n of longitudinal tensile shear strength EN 302-2:2013, Adhesives for load-bearing timber structures Test methods Part 2: Determination of resistance to delamination EN 302-3:2013, Adhesives for load-bearing timber structures Test methods Part 3: Determination of the effect of acid damage to wood fi

37、bres by temperature and humidity cycling on the transverse tensile strength EN 302-4, Adhesives for load-bearing timber structures Test methods Part 4: Determination of the effects of wood shrinkage on the shear strength EN 302-5:2013, Adhesives for load-bearing timber structures Test methods Part 5

38、: Determination of maximum assembly time under referenced conditions EN 336, Structural timber Sizes, permitted deviations EN 338, Structural timber Strength classes EN 350-2, Durability of wood and wood-based products Natural durability of solid wood Part 2: Guide to natural durability and treatabi

39、lity of selected wood species of importance in Europe EN 408, Timber structures Structural timber and glued laminated timber Determination of some physical and mechanical properties BS EN 15497:2014EN 15497:2014 (E) 7 EN 717-1, Wood-based panels Determination of formaldehyde release Part 1: Formalde

40、hyde emission by the chamber method EN 1995-1-1, Eurocode 5: Design of timber structures Part 1-1: General Common rules and rules for buildings EN 13183-1, Moisture content of a piece of sawn timber Part 1: Determination by oven dry method EN 13183-2, Moisture content of a piece of sawn timber Part

41、2: Estimation by electrical resistance method EN 13183-3, Moisture content of a piece of sawn timber Part 3: Estimation by capacitance method EN 13238, Reaction to fire tests for building products Conditioning procedures and general rules for selection of substrates EN 13501-1, Fire classification o

42、f construction products and building elements Part 1: Classification using data from reaction to fire tests EN 13501-2, Fire classification of construction products and building elements Part 2: Classification using data from fire resistance tests, excluding ventilation services EN 13823, Reaction t

43、o fire tests for building products Building products excluding floorings exposed to the thermal attack by a single burning item EN 14081-1:2005+A1:2011, Timber structures Strength graded structural timber with rectangular cross section Part 1: General requirements EN 14358, Timber structures Calcula

44、tion of characteristic 5-percentile values and acceptance criteria for a sample EN 15228:2009, Structural timber Structural timber preservative treated against biological attack EN 15416-3, Adhesives for load bearing timber structures other than phenolic and aminoplastic Test methods Part 3: Creep d

45、eformation test at cyclic climate conditions with specimens loaded in bending shear EN 15425:2008, Adhesives One component polyurethane for load bearing timber structures Classification and performance requirements 3 Terms and definitions For the purposes of this document, the following terms and de

46、finitions apply. 3.1 bonding strength structural effectiveness of adhesives between timber components when subjected to stresses 3.2 finger angle inclination of each side of the fingers of a finger joint Note 1 to entry: See Figure 2. 3.3 finger joint interlocking end joint formed by machining a num

47、ber of similar, tapered, symmetrical fingers in the ends of timber members using a finger joint cutter and then bonded together BS EN 15497:2014EN 15497:2014 (E) 8 Note 1 to entry: See Figure 2: Key 1 slot base ljfinger length p pitch finger angle lttip gap bcuttip width of the cutter bttip width Fi

48、gure 2 Typical profile of a finger joint 3.4 finger length distance between the finger base and the tip of the finger, measured along the centre line of the finger Note 1 to entry: See Figure 2. 3.5 manufacturer specific strength class set of characteristic strength, stiffness and density properties

49、 declared by a manufacturer 3.6 minimum mean density required mean density at reference moisture content Note 1 to entry: Minimum mean density is used for the classification of the reaction to fire. 3.7 pitch distance between centres of adjacent finger tips Note 1 to entry: See Figure 2. 3.8 ratio of resin to hardener proportion of resin and hardener by mass with the resin set at 100 parts 3.9 reduction factor ratio between tip width and pitch Note 1 to entry: See Figure 2. BS EN 15497:2014EN 15497: