1、December 2015 English price group 31No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 79.060.10!%KEnglish version EN
2、16351:2015,English translation of DIN EN 16351:2015-12Holzbauwerke Brettsperrholz Anforderungen;Englische Fassung EN 16351:2015,Englische bersetzung von DIN EN 16351:2015-12Structures en bois Bois lamell crois Exigences;Version anglaise EN 16351:2015,Traduction anglaise de DIN EN 16351:2015-12www.be
3、uth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 104 pages 12.15 DIN EN 16351:2015-12 2 A comma is used as the decimal marker. National foreword This document (EN 16351:2015) has been prepared by Technical Co
4、mmittee CEN/TC 124 “Timber structures” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-04-01 AA Holzbau (SpA zu CEN/TC 124, CEN/TC 250/SC 5, ISO/T
5、C 165). EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16351 October 2015 ICS 79.060.10 English Version Timber structures - Cross laminated timber - Requirements Structures en bois - Bois lamell crois - Exigences Holzbauwerke - Brettsperrholz - Anforderungen This European Standard was approved
6、 by CEN on 29 August 2015. 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 sta
7、ndards 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 own language and
8、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, Germany, Greece, Hungary
9、, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC
10、Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16351:2015 EEN 16351:2015 (E) 2 Contents Page European foreword . 6 Introduction 7 1 Scope 8 2 Normative references 9 3 Terms
11、 and definitions 10 4 Symbols 14 4.1 Main symbols . 14 4.2 Subscripts 15 5 Components and product characteristics, testing and assessment methods. 16 5.1 Components characteristics . 16 5.1.1 Timber to be used in laminations 16 5.1.2 Laminations 16 5.1.3 Timber layers 17 5.1.4 Wood-based panel layer
12、s 17 5.1.5 Species 17 5.1.6 Adhesives for the production of cross laminated timber 18 5.2 Characteristics of cross laminated timber 20 5.2.1 General . 20 5.2.2 Geometrical data 20 5.2.3 Strength and stiffness properties of cross laminated timber 24 5.2.4 Strength and stiffness properties of cross la
13、minated timber with large finger joints 25 5.2.5 Bonding strength 26 5.2.6 Resistance to fire 27 5.2.7 Reaction to fire 27 5.2.8 Dimensional stability 29 5.2.9 Release of dangerous substances . 29 5.2.10 Durability 30 6 Assessment and Verification of Constancy of Performance (AVCP) 31 6.1 General .
14、31 6.2 Type testing 31 6.2.1 General . 31 6.2.2 Test samples, testing and compliance criteria 32 6.2.3 Test reports 36 6.2.4 Shared other party results 36 6.2.5 Cascading determination of the product type results 37 6.3 Factory production control (FPC) 38 6.3.1 General . 38 6.3.2 Requirements 39 6.3
15、.3 Product specific requirements 45 6.3.4 Initial inspection of factory and of FPC 45 6.3.5 Continuous surveillance of FPC . 46 6.3.6 Procedure for modifications 46 7 Marking and labelling . 46 DINEN 16351:2015-12EN 16351:2015 (E) 3 7.1 General . 46 7.2 Cross laminated timber 47 Annex A (normative)
16、Release of Formaldehyde . 48 A.1 General . 48 A.2 Classification 48 A.2.1 Cross laminated timber 48 A.2.2 Cross laminated timber with large finger joints . 49 Annex B (normative) Additional test methods and requirements for adhesives 50 B.1 General . 50 B.2 Long-term sustained load test at cyclic cl
17、imate conditions with specimens loaded perpendicular to the glue line for moisture curing one-component polyurethane and emulsion polymer isocyanate adhesives (glass house test) . 50 B.2.1 General description . 50 B.2.2 Production of the specimens 50 B.2.3 Test procedure and climate conditions 51 B.
18、2.4 Requirements . 52 B.2.5 Test report 52 Annex C (normative) Delamination test of glue lines between layers . 53 C.1 Principle . 53 C.2 Apparatus 53 C.2.1 Pressure vessel 53 C.2.2 Drying duct 53 C.2.3 Balance . 53 C.2.4 Metal wedge and hammer . 53 C.3 Sampling and preparation of test pieces 53 C.4
19、 Procedures 54 C.4.1 General . 54 C.4.2 Measurement and evaluation of delamination 54 C.4.3 Test cycle . 55 C.5 Results 55 C.5.1 General . 55 C.5.2 Total delamination . 55 C.5.3 Maximum delamination . 56 C.5.4 Wood failure percentage 56 C.6 Test report 56 Annex D (normative) Shear tests . 57 D.1 Pri
20、nciple . 57 D.2 Apparatus 57 D.2.1 Testing machine 57 D.2.2 Shearing tool 57 D.3 Test pieces . 58 D.3.1 General . 58 D.3.2 Test pieces for edge bonds in timber layers . 58 D.3.3 Test pieces for glue lines between layers 58 D.3.4 Test pieces for testing single glue lines within cross laminated timber
21、 60 D.3.5 Sampling of test pieces . 60 D.3.6 Marking of test pieces . 61 D.4 Procedure 61 D.5 Results 61 D.6 Test report 62 DIN EN 16351:2015-12 EN 16351:2015 (E) 4 Annex E (normative) Tests with laminations with or without finger joints (including compliance criteria) 63 E.1 Sampling 63 E.1.1 Gener
22、al . 63 E.1.2 For type testing . 63 E.1.3 For factory production control 63 E.2 Testing 63 E.2.1 General . 63 E.2.2 Additional requirements for type testing . 63 E.2.3 Additional requirements for factory production control 63 E.3 Compliance criteria of finger joints in laminations . 64 E.3.1 For typ
23、e testing . 64 E.3.2 For factory production control 64 E.4 Report of tests with finger joints in laminations 64 E.5 Tests with laminations without finger joints . 65 Annex F (normative) Determination of strength, stiffness and density properties of cross laminated timber . 66 F.1 Indices 66 F.2 Gene
24、ral . 69 F.2.1 Sampling 69 F.2.2 Specimens . 69 F.2.3 Testing 69 F.2.4 Analysis of test results 70 F.2.5 Test reports 70 F.3 Characteristics determined by tests with loads perpendicular to the plane . 70 F.3.1 Bending test . 70 F.3.2 (Rolling) shear strength and stiffness derived from bending tests
25、. 71 F.3.3 (Rolling) shear strength and stiffness derived from shear test (alternative test method) . 72 F.3.4 Compression perpendicular to the plane 74 F.3.5 Large finger joint - Bending test . 74 F.4 Characteristics determined by tests with in-plane loads 75 F.4.1 Bending 75 F.4.2 Shear values wit
26、hin a layer net cross section . 76 F.4.3 Shear values for glue lines between layers torsional shear 77 F.4.4 Shear stiffness for cross laminated timber in plane by bending test 78 F.4.5 Large finger joint - Bending test . 79 Annex G (normative) Measurement of moisture content . 80 G.1 General . 80 G
27、.2 Measurement of moisture content of boards during production . 80 G.3 Mean moisture content of cross laminated timber made from timber laminations . 80 Annex H (normative) Separation tests with finger joints in laminations produced with contact-free application of adhesive . 81 Annex I (normative)
28、 Minimum production requirements . 82 I.1 Personnel 82 I.2 Production and storage facilities . 82 I.2.1 General . 82 I.2.2 Facilities for drying and storage of timber . 82 I.2.3 Facilities for processing and storage of adhesives . 82 I.2.4 Facilities for production and curing 82 I.3 Equipment 83 I.4
29、 Finger joints in laminations . 83 DINEN 16351:2015-12EN 16351:2015 (E) 5 I.4.1 Wane and edge damages 83 I.4.2 Finger joint geometry 84 I.4.3 Knots and local grain deviation . 84 I.4.4 Moisture content at bonding 85 I.4.5 Bonding surface and application of the adhesive . 85 I.4.6 Time between cuttin
30、g and adhesive application 86 I.4.7 Pressure . 86 I.4.8 Curing 86 I.5 Bonding of laminations and layers . 87 I.5.1 General . 87 I.5.2 Moisture content at bonding 87 I.5.3 Bonding surfaces and adhesive application 87 I.5.4 Cramping 87 I.5.5 Glue line thickness . 87 I.5.6 Curing 88 I.6 Cross laminated
31、 timber with large finger joints . 88 I.6.1 Cross laminated timber to be jointed 88 I.6.2 Moisture content at bonding 88 I.6.3 Finger joint geometry 88 I.6.4 Machining of the fingers . 88 I.6.5 Adhesive, bonding surface and adhesive application . 88 I.6.6 Cramping 89 I.6.7 Glue line thickness . 89 I
32、.6.8 Curing 89 Annex ZA (informative) Clauses of this European Standard addressing the requirements of the EU Construction Products Regulation . 90 Bibliography 102 DIN EN 16351:2015-12 EN 16351:2015 (E) 6 European foreword This document (EN 16351:2015) has been prepared by Technical Committee CEN/T
33、C 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 April 2016, and conflicting national standards shall be withdrawn at the lates
34、t by July 2017. 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 has been prepared under a mandate given to CEN by the Eu
35、ropean Commission and the European Free Trade Association, 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 natio
36、nal standards organizations of the following countries are 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, Lith
37、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 16351:2015-12 EN 16351:2015 (E) 7 Introduction Figure 1 shows the relation of European Standards prepared by CEN/TC 124. Key 1 boards 6 glue
38、d laminated timber (glulam) 2 is 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
39、European Standards prepared by CEN/TC 124 DIN EN 16351:2015-12 EN 16351:2015 (E) 8 1 Scope This European Standard sets out provisions regarding the performance characteristics for straight and curved structural cross laminated timber (X-Lam) both without and with large finger joints as a material fo
40、r the manufacture of structural elements to be used in buildings and bridges. This European Standard applies to cross laminated timber: to be used in service class 1 or 2 according to EN 1995-1-1; made of coniferous species and poplar listed in 5.1.5 of this standard; built up of at least three orth
41、ogonally bonded layers (at least two of them timber layers); having, depending on the number of layers, adjacent layers which may be bonded parallel to the grain; made of timber layers which are made of strength graded timber according to EN 14081-1; made of timber layers having thicknesses between
42、6 mm and 60 mm (including) taking into account the layup requirements given in this European standard; made of timber layers which may be edge bonded or which are not bonded and have spacing less than 6 mm between adjacent laminations; which may comprise wood based panel layers made of structural wo
43、od based panels specified in this European standard, fulfilling the requirements for use in service class 2 or 3 according to EN 1995-1-1, having no structural joints between the single panels and having thicknesses between 6 mm and 45 mm (including); bonded with adhesives, fulfilling the requiremen
44、ts given in this European standard; having overall thicknesses up to 500 mm; which is not made from reused timber or wood based panels comprising reused timber. This European Standard also applies to cross laminated timber with large finger joints: made from cross laminated timber pieces having the
45、same cross section and layup; made from cross laminated timber pieces having cross sectional thicknesses from 51 mm up to 345 mm (inclusive) and minimum thicknesses of the outermost layers not less than 17 mm. made from cross laminated timber pieces solely comprising timber layers; made from plane c
46、ross laminated timber pieces jointed so that no regular change between the grain directions of the layers occurs; with finger joints having a finger length of at least 45 mm and fingers which are visible at the two narrow sides of the components. This European Standard applies to cross laminated tim
47、ber treated against biological attack. Cross laminated timber treated with fire retardants is not covered. It also sets out minimum production requirements and procedures for Assessment and Verification of Constancy of Performance. DINEN 16351:2015-12EN16351:2015(E)9 2 Normative references The follo
48、wing 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, the latest edition of the referenced document (including any amendments) applies. EN 301:2013, Adh
49、esives, 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: Determination 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
