ISO INTERNATIONAL STANDARD 834-11 First edition 2014-03-01 Fire resistance tests Elements of building construction - Part 11: Specific requirements for the assessment of fire protection to structural steel elements Essais de résistance aufeu-Elements de construction- Partie 11: Exigences spécifiques d'évaluation de la protection au feu appliquées aux éléments des structures en acier Reference number IS0 834-11:2014(E) LSO @ IS0 2014 I without license from IHS Not for Resale IS0 834-11:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 834-11:2014(E) Contents Page Foreword ..iv Introduction ..V 1 Scope. .1 2 Normative references ..1 3 Terms and definitions ..2 4 Symbols and abbreviated terms ..3 5 Assessment. .6 5.1 General .6 5.2 Temperature data. .6 5.3 Correction for discrepancy in stickability and insulation performance over the thickness rangetested 5.4 Assessment procedures for thermal performance 5.5 Criteria for acceptability of the assessment method used and the resulting analysis 7 6 Report of the assessment .8 7 Limits of the applicability of the results of the assessment ..9 7.1 General .9 7.2 Permitted protection thickness for beams 10 7.3 Permitted protection thickness for columns 10 7.4 Permitted section factor for beams. .10 7.5 Permitted section factor for columns. .10 7.6 Specific issues for passive protection 11 Annex A (normative) The applicability ofthe results of the assessments for passive protection to sectionsotherthanIorHsections 12 Annex B (normative) Correction of data/nominal thickness ..14 Annex C (informative) Assessment methodology: Graphical approach ..19 Annex D (informative) Assessment methodology: Differential equation analysis (variable 入approach) .25 Annex E (informative) Assessment methodology: Differential equation analysis (constant ^ approach) .31 Annex F (informative) Assessment methodology: Numerical regression analysis .34 Annex G (informative) Assessment methodology: 3D Interpolation method (reactive systems) ...36 Annex H (normative) Selection of test specimens - Reactive materials .41 Annex I (normative) Selection of test specimens - Passive materials. ..47 Bibliography ..53 iii t license from IHS Not for Resale