1、 ISO 2014 Timber Finger joints Minimum production requirements and testing methods Bois Aboutages Exigences minimales de production et mthodes dessais INTERNATIONAL STANDARD ISO 10983 Second edition 2014-04-15 Reference number ISO 10983:2014(E) ISO 10983:2014(E)ii ISO 2014 All rights reserved COPYRI
2、GHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permiss
3、ion. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 10983:20
4、14(E) ISO 2014 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Symbols 2 5 Production requirements 2 5.1 General . 2 5.2 Timber 2 5.3 Adhesive 3 5.4 Processing . 3 5.5 Quality control . 4 6 Testing requirements 5 6.
5、1 General . 5 6.2 Materials . 5 6.3 Testing procedure . 5 6.4 Recording requirements . 5 6.5 Qualification testing . 6 6.6 Compliance testing 6 Annex A (normative) Finger-joint bending test 8 Annex B (normative) Finger-joint tension test .11 Annex C (informative) Pr oof-loading of finger joints in b
6、ending 13 Annex D (informative) Pr oof-loading of finger joints in t ension 15 ISO 10983:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally car
7、ried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
8、 ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the differ
9、ent approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may
10、 be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patent
11、s). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principl
12、es in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 165, Timber structures. This second edition cancels and replaces the first edition (ISO 10983:1999), which has been technically revised.iv ISO
13、 2014 All rights reserved ISO 10983:2014(E) Introduction This International Standard sets out minimum production and testing requirements for structural finger joints. It includes requirements for documentation of manufacturing and test procedures in a quality manual to ensure ongoing consistent qua
14、lity. TC 165 is not prepared to recommend the use of finger joints in structural timber components where the manufacturing process is not described by a production facilitys quality manual for the following reasons. a) Structural properties can only be assigned to a finger joint that is clearly defi
15、ned. Such a definition requires a clear description, within the production facilitys quality manual, of the raw material inputs (wood and adhesive), the manufacturing process, and quality assurance procedures. b) Processes which are not written in a production facilitys quality manual and promulgate
16、d to the personnel responsible for manufacturing the finger joint are unlikely, over lengthy periods of time, to be manufactured consistently. Other principles built into the development of this International Standard are as follows. This International Standard applies only to the finger-joint produ
17、ction and makes reference only to the maintenance of finger-joint strength. Finger joints are found in both glulam laminations and finger-jointed timber used directly for structural applications. No attempt is made in this International Standard to relate compliance testing to the properties of eith
18、er glulam or finger- jointed timber. Qualification testing is undertaken to establish characteristic strengths and target strengths for compliance (daily quality control) testing. The precise test configurations are not specified in this International Standard, which permits the use of a wide variet
19、y of test equipment. However, it is a requirement that the same equipment and configuration used for qualification testing also be used for compliance testing. Both bending and tension tests are provided. ISO 2014 All rights reserved v Timber Finger joints Minimum production requirements and testing
20、 methods 1 Scope This International Standard specifies minimum requirements for the manufacture and testing of bonded finger joints in structural wood products such as glued laminated timber, cross-laminated timber, and finger-jointed timber. Although most finger joints are produced in coniferous sp
21、ecies (softwoods), this International Standard also applies to broadleafed species (hardwoods) where information is available to enable them to be satisfactorily bonded. It does not cover impressed (die-formed) joints and, in the case of laminated timber products, it applies only to individual lamin
22、ations. Large finger joints in glued laminated timber are not covered by this International Standard. 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 cit
23、ed applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 20152-1, Timber structures Bond performance of adhesives Part 1: Basic requirements 3 T erms a nd definiti ons For the purposes of this document, the following terms and definiti
24、ons apply. 3.1 f ing e r j o in t end joint formed by machining a number of similar, tapered, symmetrical fingers in the ends of timber members which are then bonded together 3.2 production batch group of finger joints, all of which have the same profile, are manufactured from the same species of ti
25、mber, have the same nominal cross section, are bonded with the same adhesive, and are made during a continuous run on one production line 3.3 qu a l i f ic at ion t e s t i n g testing in bending or tension performed to establish the mean and lower 5 % tolerance limit strength with 75 % confidence w
26、hen the finger joint process is first established 3.4 compliance testing testing in bending or tension to verify that ongoing production complies with the characteristic and target strengths established during qualification testing INTERNATIONAL ST ANDARD ISO 10983:2014(E) ISO 2014 All rights reserv
27、ed 1 ISO 10983:2014(E) 4 Symbols For the purposes of this International Standard, the following symbols apply. a distance between support and nearest applied load in bending test (mm) b smaller dimension of cross section (mm) h larger dimension of cross section (mm) f m bending strength of a single
28、finger joint f t tension strength of a single finger joint l distance between supports in bending test P maximum force applied to finger jointed specimen during bending test T maximum force applied to finger jointed specimen during tension test 5 Production requirements 5.1 General The cutting and t
29、he bonding operations of finger joints shall result in reliable and durable bonds of the required strength. The premises shall meet the requirements of cleanliness, air temperature, and relative humidity to ensure a satisfactory production environment. Procedures for the operation of the production
30、facility and for the initial and ongoing quality evaluation shall be documented in a quality manual. All machinery and equipment necessary for the production process shall be available and in good working order. Timber shall be properly graded. Adhesives shall be compatible with the species and trea
31、tment in conformance with the adhesive manufacturers recommendations. Cutting, bonding, and handling of finger-jointed timber shall be in conformance with the production facilitys quality manual. 5.2 Timber 5.2.1 Species Any wood species shall be permitted provided that sufficient information on the
32、 species is available to enable the timber to be bonded satisfactorily. Different species with similar strength and bonding characteristics shall be permitted to be grouped together for qualification and compliance testing. 5.2.2 Timber grading Individual pieces of timber to be finger-jointed shall
33、be graded according to the product requirements as described in the production facilitys quality manual. Specific limits shall be defined for knots, grain deviations, wane, and other characteristics determined to be detrimental to the performance of the product. The maximum size and extent of knots
34、and other strength-reducing characteristics at the ends of the pieces to be finger-jointed shall be limited as defined in the quality manual to minimize their effect on the strength of the joint. 5.2.3 Moisture content and temperature During assembly and curing, the moisture content and temperature
35、of the wood at the joint shall be within the range specified by the adhesive manufacturer. Moisture content shall be measured by the use of a regularly calibrated moisture meter.2 ISO 2014 All rights reserved ISO 10983:2014(E) 5.2.4 Chemically treated timber Wood treated with chemicals such as those
36、 used to improve durability or fire performance shall be considered as a separate species for the purposes of finger joint production and quality control. 5.3 Adhesive 5.3.1 General The adhesive shall have sufficient strength and durability to ensure that the integrity of the bond will be maintained
37、 throughout the intended lifetime of the structure. Compatibility of the adhesive, wood substrate, and plant procedures shall be demonstrated through qualification tests prior to production. The adhesive used shall meet the requirements of ISO 20152-1. 5.3.2 A dhesi v e manufactur er s specification
38、s The specifications of the adhesive manufacturer shall be followed with respect to the following: a) mixing of the adhesive; b) use of fillers; c) preheating of the timber (by high frequency, infrared, or other methods); d) adhesive application; e) open and closed assembly times; f) curing of the a
39、dhesive; g) temperature of the air and the timber before and during curing; h) moisture content of the timber at the joint; g) other parameters deemed necessary by the adhesive manufacturer to maintain a consistent bond quality. 5.4 Processing 5.4.1 Application of adhesive The method used for adhesi
40、ve application shall ensure that all finger surfaces in the assembled joint are covered with the adhesive. 5.4.2 Assembly Joints shall be bonded as soon as possible, and not later than 24 h, after machining. Between machining and assembly, care shall be taken to keep the cut surfaces of the fingers
41、clean. The members shall not be stored in conditions likely to lead to distortion. 5.4.3 End pressure The application of end pressure shall be adequate to bring the mated joint surfaces into contact and extrude excess adhesive, while maintaining proper tip gaps and joint alignment. End pressure shal
42、l be maintained until the joint has cured adequately to enable the jointed timber to be moved without weakening the joint. Curing of the adhesive shall be completed before further processing, unless it has been demonstrated that the finger joints will have sufficient and reliable strength to allow i
43、mmediate processing. ISO 2014 All rights reserved 3 ISO 10983:2014(E) 5.5 Quality control 5.5.1 General The manufacturer shall establish and document requirements for lumber, adhesive, and processing with corresponding quality control procedures. Each step in the production process, including lumber
44、 grading, finger joint machining and fit, adhesive application, joint assembly and handling, adhesive curing, and final finishing shall be assessed for each production batch. Finger joint strength shall be established through initial qualification testing and verified for each production batch throu
45、gh ongoing compliance testing. 5.5.2 Facilities, equipment, and personnel All necessary facilities, equipment, and personnel shall be available to carry out the necessary inspections and tests. The manufacturer shall control, calibrate, and maintain inspection, measuring, and test equipment, to demo
46、nstrate the conformity of the finger joints to the requirements of this International Standard. Equipment shall be used in a manner which ensures that measurement tolerances are known and are consistent with the required measurement capability. 5.5.3 Responsibility and authority The responsibility,
47、authority, and interrelation of all personnel who manage, perform, and verify work affecting quality shall be defined. Persons responsible to initiate action to prevent the occurrence of non-conformity of finger joints and to identify and record any quality problems with finger joints shall be clear
48、ly identified. 5.5.4 Factory production control At every production facility, the manufacturer shall appoint a person or persons who shall have appropriate authority, knowledge, and experience of the production of finger joints to be responsible for conducting and supervising factory production and
49、quality control procedures and ensuring that the requirements given in this International Standard are implemented and maintained. 5.5.5 Review The quality control system adopted to satisfy the requirements of this International Standard shall be reviewed at appropriate intervals by the manufacturers management to ensure its continuing suitability and effectiveness. Records of such reviews shall be maintained. 5.5.6 Quality manual The manufacturer shall document all procedures relevant to the production and quality control of finge
