ISO INTERNATIONAL STANDARD 12122-6 First edition 2017-07 Timber structures Determination of characteristic values - Part 6: Large components and assemblies Structures en bois - Détermination des valeurs caracteristiques - Partie 6: Composants assembleés Reference number IS0 12122-6:2017(E) ISO @ IS0 2017 IS0 12122-6:2017(E) 2 COPYRIGHTPROTECTEDDOCUMENT @ IS0 2017, Published in Switzerland 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 writtenpermission.Permission canberequestedfromeitherIsOattheaddressbelow orIso'smemberbodyinthecountryof the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel.+41227490111 Fax +4122 749 09 47 [email protected] www.iso.org ii @ IS0 2017 - All rights reserved IS0 12122-6:2017(E) Contents Page Foreword .iv Introduction V 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Symbols 1 5 Reference population .2 5.1 General. 5.2 Prediction of test results 3 6 Sampling. .3 7 Sample conditioning. 4 8 Test data 4 8.1 Loading specifications 4 8.2 Testing arrangement. 4 8.3 Test measurements 4 9 Evaluation of characteristic values for structural properties 4 9.1 General principles. 4 9.2 Direct evaluation of characteristic value 5 9.2.1 Sampling factor kn 55 9.2.2 Normal distribution 9.2.3 Log-normaldistribution 6 9.3 Statistical determination of resistance models 9.3.1 General. .7 9.3.2 Procedure .7 9.3.3 Use of prior test data .11 10 Reporting .12 Annex A (informative) Commentary .13 Annex B (informative) Example of calculation according to 9.2 and 9.3 .21 Bibliography 23 IS0 2017-All rights reserved ili