ISO INTERNATIONAL STANDARD 13910 Second edition 2014-05-01 Timber structures Strength graded timber Test methods for structural properties Structure en bois - Bois classé selon la résistance - Méthodes d'essai des propriétés structurelles Reference number IS0 13910:2014(E) ISO @IS02014 No reproduction or networking permitted without license from IHS Not for Resale IS0 13910:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's 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 copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic or netwiorking permited without license from IHS Not for Resale IS0 13910:2014(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Terms and definitions 3 Symbols and abbreviated terms ..2 3.1 General notation.. .2 3.2 Subscripts... 4 Test specimens. .3 5 Test conditions .3 6 Test configurations 3 6.1 Density .3 6.2 Bending strength and stiffness .4 6.3 Tension strength parallel to the grain .5 6.4 Compression strength parallel to the grain .. 6 6.5 Shear strength parallel to the grain .7 6.6 Tension strength perpendicular to the grain ..9 6.7 Compression strength and stiffness perpendicular to the grain ..11 6.8 Torsional shear modulus .13 7 Adjustment for non-reference test conditions ..14 8 Test report .15 Annex A (informative) Adjustment factors for non-reference condition ..16 Bibliography ..17 iii se with ISt thout license from IHS Not for Resale