5326 ISO NTERNATIONAL STANDARD INTERNATIONAL ORGANIZATION FOR STANDARDIZATION·MEKYHAPOHA OPIAHH3ALIHA HIO CTAHIAPTH3ALIHH·ORGANISATION INTERNATIONALE DE NORMALISATION Solid wood paving blocks - Hardwood paving blocks 一 Quality requirements Blocs de pavage en bois massif -- Blocs de pavage en bois feuillus -- Specifications de qualite First edition -- 1978-02-15 ISO 5326-1978 (E) Ref. No. ISO 5326-1978 (E) UDC 674-42 : 69.025.351.3 Descriptors : wood products, paving, solid blocks, sawn timber, broad leaved timber, materials specifications, defects. Price based on 1 page Copyright International Organization for Standardization Not for Resale FOREWORD ISO (the International Organization for Standardization) is a worldwide federation of national standards institutes (IsO member bodies). The work of developing International Standards is carried out through iSO technical committees. Every member body interested in a subject for which a technical committee has been set up 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. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISO Council. International Standard IsO 5326was developed by Technical Committee iSO/TC 99, Semi-manufactures of timber, and was circulated to the member bodies in July 1976. It has been approved by the member bodies of the following countries : Austria Hungary Poland Brazil India Romania Bulgaria italy South Africa, Rep. of Canada Korea, Rep. of Spain Mexico Czechoslovakia Turkey Germany Norway Yugosiavia No member body expressed disapproval of the document. @ International Organization for Standardization, 1978 : Printed in Switzerland ted without license from IHS Not for Resale ISO 5326-1978 (E) INTERNATIONAL STANDARD Solid wood paving blocks - Hardwood paving blocks 一 Quality requirements 2 REFERENCE 1 SCOPE AND FIELD OF APPLICATION 1.1 This International Standard lays down the quality ISO 5327, Solid wood paving blocks - General charac- requirements for solid hardwood paving blocks, used for teristics. paving covered (indoor) and open (outdoor) spaces. QUALITY REQUIREMENTS Paving blocks shall not contain more defects than 3.1 those specified in the table. 3.2 Paving blocks containing more defects than those Paving blocks made of Fagus sylvatica wood allowed in the table shall not be delivered under the 1.2 are designation "isO solid hardwood paving blocks". intended for use only in covered spaces. TABLE - Permissible defects Wood or sawing defects Acceptance conditions Decay, suffocated wood and mould none permitted on the arrises of lateral faces, not exceeding 20 % of the length, of the width, of the Sound sapwood height or of the diameter of the paving block, protected against insects Texture, slope of grain, sound heart permitted and sound red-heartwood Colouring permitted if it does not result from adulteration due to biological agents checks and permitted shallow shakes deep Shakes permitted on condition that they do not exceed 50 % of the paving block dimension along which they appear (length, width, height, diagonal) frost cracks through none Inbark permitted in the form of discontinuous rays if it does not appear on the faces sound, inter- permitted, not exceeding 30 mm in diameter grown or burst Knots black, partially excluded on the face; two knots permitted on the other sides of each paving blocks, provided intergrown, that they do not exceed 50 % of the width or of the diameter and that they are located at not peap less than 20 mm below the edges of the face excluded on the face; three holes permitted on the other sides of each paving block, provided Worm holes that they do not exceed 3 mm in diameter excluded on the edges of the face; permitted on the other edges, not exceeding 20 % of the Wane length, of the