ISO 15206-2010 Timber poles - Basic requirements and test methods《木材杆材 基本要求和试验方法》.pdf
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1、 Reference number ISO 15206:2010(E) ISO 2010INTERNATIONAL STANDARD ISO 15206 First edition 2010-04-01 Timber poles Basic requirements and test methods Poteaux en bois Exigences de base et mthodes dessai ISO 15206:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with
2、 Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing po
3、licy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every
4、 care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specified
5、, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case p
6、ostale 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 ii ISO 2010 All rights reservedISO 15206:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Terms
7、 and definitions .2 4 Symbols and abbreviated terms 6 5 General requirements .7 5.1 Marking.7 5.2 Tree felling and wood preparation.7 5.3 Requirements for pole sizes, tolerances, permissible deviations and damage .7 5.4 Characteristic values 7 5.5 Strength-reducing characteristics.8 5.6 Other charac
8、teristics.10 5.7 Untreated wood poles.10 5.8 Preservative-treated wood poles .10 6 Test methods .11 6.1 Length and diameter .11 6.2 Knots and knot clusters11 6.3 Slope of grain.11 6.4 Rate of growth .11 6.5 Bark pockets and rind galls .12 6.6 Mechanical damage.12 6.7 Fissures, splits and checks12 6.
9、8 Determination of moisture content12 7 Evaluation of conformity 12 7.1 General .12 7.2 Initial type testing 12 7.3 Product assessment .13 8 Marking and declarations .13 8.1 Marking (mandatory) .13 8.2 Specific marking and declarations 13 8.3 Marking (optional) .14 Annex A (informative) Commonly use
10、d sizes for wood poles .15 Annex B (normative) Scheme for sampling preservative-treated wood poles by taking borings .16 Annex C (normative) Test method for bending properties Cantilever method .17 Annex D (normative) Test method for bending properties Four-point method.22 Annex E (normative) Test m
11、ethod for bending properties Three-point method proof test .28 Annex F (normative) Determination of characteristic values.33 Bibliography37 ISO 15206:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standar
12、ds bodies (ISO member bodies). The work of preparing International Standards is normally carried 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 organi
13、zations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in
14、 the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 %
15、of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 15206 was prepared by Technical Committee ISO/TC 165, Timber
16、 structures. ISO 15206:2010(E) ISO 2010 All rights reserved vIntroduction This International Standard covers the requirements for grading and assignment of characteristic values that can be used for the design of timber poles used as cantilevers and/or in compression. It is the responsibility of the
17、 supplier to always ensure that all products supplied are in conformity with the requirements of this International Standard and any other specification with which they are provided. This International Standard is intended for the initial determination of the characteristic values for a given popula
18、tion of poles and additional determination when there is a reason to suspect that the characteristics of a population have changed. This International Standard recognizes that there are many different visual strength-grading rules for timber in use internationally. These have come into existence to
19、allow for different species or groups of species, geographic origin, different dimensional requirements, varying requirements for different uses, the quality of material available, and historical influences or traditions. Because of the diversity of existing standards for wood poles for overhead lin
20、es in use in different countries, it is impossible to lay down a single set of acceptable visual grading rules. This International Standard therefore gives the basic principles to be followed when drawing up regional, national, local or buyer requirements for some characteristics and sets limits for
21、 others. In laying down visual grading rules, two main factors are relevant: they shall clearly define and limit the strength-affecting characteristics in poles, such that there is very high confidence that poles supplied meet the required characteristic strength value; the rules and the text are su
22、ch that they can be easily understood and be suitable for implementation by grading personnel. This International Standard is also concerned with the durability characteristics of wood poles for overhead power and telecommunication lines. It assumes that all such poles are constructed from round tim
23、ber in which the finished product comprises either a central core of heartwood surrounded by a zone of sapwood or the heartwood only. Such assumptions dictate that where sapwood is present, preservative treatment is normally required in order to provide the poles with sufficient enhanced durability,
24、 unless the amount of sapwood present is such that its loss would not compromise the integrity of the pole during its service life and the heartwood has sufficient natural durability as required by this International Standard. Some timber species do not allow an easy differentiation between heartwoo
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