ISO INTERNATIONAL STANDARD 9087 First edition 1998-10-15 Wood Determination of nail and screw holding power under axial load application Bois Détermination de la résistance a I'arrachement des pointes et des vis a bois a I'application axiale de la charge ISO Reference number ISO 9087:1998(E) ISO 9087:1998(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO liaison with sO, a alsotake part in the work.ISOcollaborates closely withtheInternational Electrotechnica Commission (IEC) on all matters of electrotechnical standardization. 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 % of the member bodies casting a vote. International Standard ISO 9087 was prepared by Technical Committee ISO/TC 165, Timber structures. @ISO1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced microfilm, without permission in writing from the publisher International Organization for Standardization Casepostale56·CH-1211Geneve20·Switzerland Internet iso@iso.ch Printed in Switzerland ii INTERNATIONAL STANDARD@ISO ISO 9087:1998(E) Wood Determination of nail and screw holding power under axial load application 1 Scope This International Standard specifies a method for determining the specific resistance of wood to the extraction of nails and screws. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and iSO maintain registers of currently valid International Standards. Iso 3130:1975, Wood — Determination of moisture content for physical and mechanical tests. IsO 3131:1975, Wood — Determination of density for physical and mechanical tests. 3 Principle resistance of the wood as a ratio of this force to the depth of nail or screw penetration. 4 Apparatus 4.1 Testing machine, capable of measuring the load to an accuracy of ± 1 %. 4.2 Device for extracting nails and screws, capable of ensuring the application of the extraction force along their axes. 4.3 Measuring instrument, capable of measuring the diameter of nails and screws to an accuracy of ± 0,1 mm. 4.4 Measuring instrument, capable of measuring linear dimensions to an accuracy of ± 1 mm. 4.5 Equipment for determining the moisture content, in accordance with ISO 3130. 5 Preparation of test pieces 5.1 Test pieces shall be cut in the form of a rectangular prism with square sections having dimensions no smaller than those shown in figure 1.