ISO/TR TECHNICAL REPORT 834-3 Second edition 2012-06-01 Fire-resistancetestsElementsof building construction - Part 3: Commentary on test method and guide to the application of the outputs from the fire-resistance test Essaisderésistanceaufeu-Elémentsdeconstruction- Partie 3: Commentaires sur les methodes d'essais et guides pour I'applicationdesrésultatsdesessaisderésistanceaufeu Reference number ISO/TR 834-3:2012(E) LSO CopyightInternationalOrganizatonforStandardization @ISO 2012 without license from IHS Not for Resale ISO/TR834-3:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IsO at the address below or isO's memberbody in the country of therequester. ISO copyright office Casepostale56·CH-1211Geneva20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2012 -All rights reserved No reproduction orr networking permited without license from IHS Not for Resale ISO/TR834-3:2012(E) Contents Page Foreword ..iv Introduction 1 Scope. 2 Normativereferences 3 Standard test procedure. 3.1 Heating regimes... 3.2 Furnace and equipment design. 3 3.3 Conditioning of the specimen.. 3.4 Fuel input and heat contribution. 3.5 Pressuremeasurementtechniques 3.6 Post heating procedures. 5 3.7 Specimendesign... 6 3.8 Specimen construction. 3.9 Specimen orientation.. .8 3.10 Loading ... 8 3.11 Boundary conditions and restraint and their influence on loadbearing capacity 9 3.12 Performanceverification. 11 4 Fire-resistance criteria.. 12 4.1 Objective.. 12 4.2 Load-bearing capacity 12 4.3 Integrity... 12 4.4 Insulation. .13 4.5 Radiation. 13 4.6 Other characteristics 13 5 Classification 14 6 Repeatabilityandreproducibility 6.1 Repeatability 15 6.2 Reproducibility.. 15 Establishingthefieldofapplicationoftestresults .16 7.1 General. .16 7.2 Interpolation. .16 7.3 Extrapolation 8 Relationshipbetweenfireresistanceandbuildingfires. AnnexA (informative) Uncertainty of measurement infire resistance testing .20 Bibliography 25 ili ed without license from IHS Not for Resale