5328 (TSO) NTERNATIONAL STANDARD Solid wood paving blocks - Softwood paving blocks - Quality requirements Blocs de pavage en bois massif -- Blocs de pavage en bois résineux -- Specifications de qualité First edition -- 1978-02-15 SO 5328-1978 (E) Ref. No. 1SO 5328-1978 (E) UDC 674-42 : 69.025.351.3 Descriptors : wood products, paving, solid blocks, coniferoustimber, materialsspecifications,defects. Price based on 1 page Copyright International Organization for Standardization ted without license from IHS NotforResale 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 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 StandardISO 5328 3was developed byTechnical 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 Spain Canada Korea, Rep. of Mexico Czechoslovakia Turkey Germany Norway Yugoslavia No member body expressed disapproval of the document . @ International Organization for Standardization, 1978 Printed inSwitzerland Not for Resale t license from IHS ISO 5328-1978 (E) INTERNATIONAL STANDARD Solid wood paving blocks s - Softwood paving blocks Quality requirements SCOPE AND FIELD OF APPLICATION QUALITY REQUIREMENTS 1 3 This International Standard lays down the quality require- 3.1 Paving blocks shall not contain more defects than ments for solid softwood paving blocks used for paving those specified in the table. covered (indoor) and open (outdoor) spaces. REFERENCE 2 3.2 Paving blocks containing more defects than those Solid wood paving blocks allowed in the table shall not be delivered under the desig ISO5327， - General charac nation "IsO solid softwood paving blocks". teristics. TABLE -- Permissible defects Acceptance conditions Wood or sawing defects Decay, mould none Pith permitted Slope of grain and curly grain permitted permitted if it does not result from adulteration due to biological agents Colouring checks and permitted shallow shakes deep excluded on the face; permitted on the other sides, on condition that they do not exceed 50 % of the paving block dimension along which they appear (length, width, height, diameter, diagonal) frost cracks Shakes through none ring shakes Inbark permitted in the form of discontinuous rays if it does not appear on the face sound, inter- permitted not exceeding 30 mm in diameter grown or burst Round and excluded on the face; two knots permitted on the other sides of each paving block, provided oval knots partially inter- that they do not exceed one-third of the width or of the diameter and that they are located at grown and dead not less than 20 mm below the edges of the face Traversing splay knots including branched knots exceeding 20 mm; or one branched knot excluded on the face; three holes permitted on the other sides of each paving block, provided Worm holes that they do not exceed 2 mm in diameter excluded on the edges of the face; permitted on the other edges, not exceeding 20 % of the Wane (dull edges) length, of the width, or of the diameter of the paving block Pitch-pockets one-sided permitted Saw marks permitted on all sides, provided that they do not exceed 2 mm in depth Defects not mentioned permitted, provided that they do not impair the strength and the durability of the paving blocks Copyright Intermational Organization for Standardization 1 r networking