ISO INTERNATIONAL STANDARD 12122-1 First edition 2014-03-01 Timber structures Determination of characteristic values - Part 1: Basic requirements Structures en bois - Determination des valeurs caractéristiques - Partie1:Exigencesdebase Reference number ISO 12122-1:2014(E) ISO @ IS0 2014 IS0 12122-1:2014(E) COPYRIGHTPROTECTED DOCUMENT @IS02014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior 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 + 4122 74909 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved IS0 12122-1:2014(E) Contents Page Foreword .iv Introduction ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions .1 4 Symbols and abbreviated terms ..2 5 Reference population .2 6 Sampling. .3 6.1 Sampling method .3 6.2 Sample size. .3 7 Sample conditioning .3 7.1 Sample moisture content .4 7.2 Sample temperature. ..4 8 Test data ..4 8.1 Test method .4 8.2 Test data compatible with product description ..4 9 Evaluation of characteristic values for structural properties 9.1 Structural properties. 4 9.2 Characteristic value based on the mean .5 9.3 Characteristic value based on the 5th percentile test value .5 10 Report .5 10.1 General .5 10.2 Reference population .5 10.3 Sampling .6 10.4 Test methods .6 10.5 Analysis methods .6 10.6 Characteristic values ..6 Annex A (normative) Analysis of data for characteristic values .7 Annex B (informative) Commentary .12 Annex C (informative) Examples. .22 Bibliography .27 @.isn.2014allrightsreserved iii