ISO INTERNATIONAL STANDARD 1288-2 First edition 2016-02-15 Glass in building Determination of the bending strength of glass Part 2: Coaxial double-ring test on flat specimens with large test surface areas Verre dans la construction - Détermination de la résistance du verre alaflexion- Partie 2: Essais avec doubles anneaux concentriques sur éprouvettes planes, avec de grandes surfaces de sollicitation Reference number IS0 1288-2:2016(E) ISO International Organization for Standardization @ IS0 2016 STANDARDIZATION C15956617 ed without license from IHS IS0 1288-2:2016(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 copyright@iso.org www.iso.org PrganizationforStandardization ensee-ZHEJIANG INST.OF STANDARDIzARoISQ16- All rights reserved etworking permitted without license from IHS IS0 1288-2:2016(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Symbols 5 Principle of test method ..2 6 Apparatus .3 6.1 Testing machine .3 6.2 Loading device. ..4 6.2.1 Ring load .4 6.2.2 Surface pressure regulator 6.3 Measuring instruments ..5 7 Sample .5 7.1 Shape and dimensions of the specimens. 7.2 Sampling and preparation of specimens. .5 7.2.1 Cutting and handling .5 7.2.2 Conditioning .5 7.2.3 Examination . 6 7.2.4 Adhesivefilm .6 7.3 Number of specimens .6 8 Procedure. .6 8.1 Temperature 8.2 Humidity. .6 8.3 Thickness measurement. .6 8.4 Base plate... .6 8.5 Positioning of specimen and loading ring 8.6 Load application .1 8.7 Loading rate 8.8 Location of the origin 1 8.9 Assessmentofresidualstresses .7 9 Evaluation ..8 9.1 Limitation of the evaluation .8 9.2 Calculation of bending strength ..8 10 Test report ..9 Annex A (informative) Example of a device for keeping the gas pressure, p, in line with the piston force, F .11 Bibliography ..14 iii ovided byIHSunderlicense withISO see=ZHEJIANG INSTOFSTANDARDIZATIONC15956617 ed without license from IHS Not for Resale, 2016/4/26 02:19:58