ISO INTERNATIONAL STANDARD 1288-1 First edition 2016-02-15 Glass in building Determination of the bending strength of glass Part 1: Fundamentals of testing glass Verre dans la construction - Détermination de la resistance du verre a la flexion - Partie 1: Principes fondamentaux des essais sur le verre Reference number IS0 1288-1:2016(E) ISO International Organization for Standardization @ IS0 2016 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under Not for Resale, 2016/4/26 02:20:16 ted without license from IHS IS0 1288-1:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, 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 written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenatinair PrganizationforStandardization ensee-ZHEJIANG INST OF STANDARDIzARoISQ16- All rights reserved Not for Resale, 2016/4/26 02:20:16 etworking permitted without license from IHS IS0 1288-1:2016(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Symbols. ..2 5 Factors to be taken into account when testing glass .3 5.1 Glass as a material. .3 5.1.1 General. .3 5.1.2 Effect of surface condition 4 5.1.3 Effect of rate of loading ..4 5.1.4 Effect of test surface area 4 5.1.5 Effect of ambient medium. .5 5.1.6 Effect of aging. .5 5.1.7 Effect of temperature .5 5.2 Bending stress and bending strength .5 5.2.1 General. 5 5.2.2 Effective stress. .5 5.2.3 Equivalent bending strength .6 5.2.4 Profile bending strength 5.3 Types of glass. 6 5.3.1 General. ..6 5.3.2 Patterned glass 6 5.3.3 Laminated glass. .6 5.4 Orientation of the specimens .7 5.5 Number of specimens in a sample .7 6 Explanations of the test methods. .7 6.1 Coaxial double ring test for large test surface areas .7 6.1.1 Elimination of edge effects .7 6.1.2 Analysis of the stress development ..7 6.1.3 Testing of patterned glass. .11 6.2 Test with specimen supported at two points (four point bending) ..11 6.1.4 Limitations. ..11 6.1.5 Inclusionofedgeeffects 11 6.1.6 Analysis of the stress development ..11 6.3 Coaxial double ring test for small test surface areas. ..13 6.1.7 Elimination of edge effects ..13 6.1.8 Analysis of the stress development ..13 7 Range of application of the test methods ..14 7.1 General limitations. .14 7.2 Limitations to IS0 1288-2 .14 7.3 Limitations to IS0 1288-3 ..14 7.4 Limitations to ISO 1288-4 .15 7.5 Limitations to IS0 1288-5 ..15 8 Calibration of the testing machines ..15 9 Recommendations for safe use of test equipment ..15 Bibliography ..17 iii ISee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 ed without license from IHS