ISO 16572-2008 Timber structures - Wood-based panels - Test methods for structural properties《木结构 木基板材 结构性能的试验方法》.pdf
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1、 Reference number ISO 16572:2008(E) ISO 2008INTERNATIONAL STANDARD ISO 16572 First edition 2008-06-01 Timber structures Wood-based panels Test methods for structural properties Structures en bois Panneaux base de bois Mthodes dessai pour la dtermination des proprits structurelles ISO 16572:2008(E) P
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3、arties accept therein the responsibility of not infringing Adobes licensing policy. 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 relati
4、ve to the file; the PDF-creation parameters were optimized for printing. Every 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. COPYRIG
5、HT PROTECTED DOCUMENT ISO 2008 All rights reserved. Unless otherwise specified, 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
6、 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 ii ISO 2008 All rights reservedISO 16572:2008(E) ISO 2008 All rights reserved iii Co
7、ntents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Symbols and abbreviated terms . 2 5 Sampling 3 5.1 Sampling of panels. 3 5.2 Sampling of specimens 3 6 Preparation of test pieces 4 6.1 Conditioning 4 6.2 Dimensions of test pieces . 4 6.3 Mois
8、ture content. 4 6.4 Density . 4 7 Bending properties. 5 7.1 True bending properties flatwise 5 7.2 Apparent bending properties flatwise 7 7.3 Bending properties edgewise 8 8 Compression properties 10 8.1 General. 10 8.2 Compression test for small test pieces 10 8.3 Compression test for large-size te
9、st pieces 12 8.4 Expression of results . 14 9 Tension properties 14 9.1 Test piece 14 9.2 Loading equipment. 14 9.3 Loading method 15 9.4 Test procedure 15 9.5 Expression of results . 15 10 Panel shear 16 10.1 Panel shear Method A 16 10.2 Panel shear Method B 17 10.3 Expression of results . 20 11 Pl
10、anar shear 20 11.1 Method A Loaded by plates 20 11.2 Method B Five-point bending 23 12 Test report . 24 12.1 General. 24 12.2 General data 24 12.3 Data on the material 24 12.4 Data on individual test pieces . 25 12.5 Data on physical properties. 25 12.6 Additional information 25 12.7 Sampling data .
11、 25 Annex A (informative) Small-size compression test pieces 26 Annex B (informative) Example of cutting schedule 27 Annex C (informative) Panel shear Method B. 28 ISO 16572:2008(E) iv ISO 2008 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federa
12、tion of national standards 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 committ
13、ee. International organizations, 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
14、 with the rules given in 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 ap
15、proval by at least 75 % 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 16572 was prepared by Technical Comm
16、ittee ISO/TC 165, Timber structures. ISO 16572:2008(E) ISO 2008 All rights reserved v Introduction For each type and grade of panel product, as defined (for example in a wood-based panel standard), it is necessary to determine characteristic values of structural properties to enable it to be used fo
17、r structural purposes. This International Standard details the necessary testing, which may only need to be carried out once for each type and grade of product unless there is a reason to suspect a significant change has occurred in its properties. This International Standard is not intended for qua
18、lity control testing. INTERNATIONAL STANDARD ISO 16572:2008(E) ISO 2008 All rights reserved 1 Timber structures Wood-based panels Test methods for structural properties 1 Scope This International Standard specifies test methods for determining the structural properties of commercial wood-based and l
19、ignocellulosic fibrous panel products for use in load-bearing timber structures. These properties are intended for the calculation of characteristic values. NOTE Bamboo is an example of a lignocellulosic fibrous material. 2 Normative references The following referenced documents are indispensable fo
20、r the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 9424, Wood-based panels Determination of dimensions of test pieces ISO 9427, Wood-based panels Deter
21、mination of density ISO 16979, Wood-based panels Determination of moisture content 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 knife check separation of the fibres which does not extend through the thickness of the veneer 3.2 length wood-
22、based panels long dimension of the test piece in the plane of the panel 3.3 specimen wood-based panels piece of the panel from which a test piece will be fabricated 3.4 test area wood-based panels that portion of the test piece from which the structural property is being evaluated 3.5 test piece woo
23、d-based panels specimen or aggregate of parts from a sample fabricated to the size and shape required for testing ISO 16572:2008(E) 2 ISO 2008 All rights reserved3.6 width wood-based panels short dimension of the test piece in the plane of the panel 4 Symbols and abbreviated terms A cross-sectional
24、area of the test piece within the gauge length, equal to bt, in square millimetres b measured width of test piece, in millimetres E modulus of elasticity, in megapascals F load, in newtons F maxmaximum load applied to the test piece, in newtons F increment of load on the linear portion of the load-d
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