ISO INTERNATIONAL STANDARD 20332 Second edition 2016-06-01 Cranes Proof of competence of steel structures Appareils de levage a charge suspendue - Verification d'aptitude des charpentesen acier Reference number ISO 20332:2016(E) ISO International Organization for Standardization See=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02016 vided by IHS under No reproduction or networking permitted without license from IHS IS0 20332:2016(E) COPYRIGHT PROTECTEDDOCUMENT 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. ISO copyright office 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 Licensee-ZHEJIANG INST OF STANDARDIZAISQ 0d6 - All rights reserved Not for Resale, 2016/8/17 06:53:37 networking permited without license from IHS IS0 20332:2016(E) Contents Foreword 1 Scope 2 Normative references . 3 Terms, definitions, symbols and abbreviated terms.. 4 General.. .8 4.1 General principles.... 4.2 Documentation.. 8 4.3 Alternative methods.. .8 4.4 Materials of structural members ..... .8 4.5 Bolted connections... 4.5.1 Bolt materials... 11 4.5.2 4.5.3 Shear and bearing connections . 11 4.5.4 Friction grip type (slip resistant) connections ... .12 4.5.5 Connections loaded in tension.... 12 4.6 Pinned connections.... 12 4.7 Welded connections. 4.8 Proof.of.competence for structural members and connections.. 5 Proof of static strength .. 5.1 5.2 Limit design stresses and forces ... .14 5.2.1 General ... .14 5.2.2 Limit design stress in structural members ..... 14 5.2.3 Limit design forces in bolted connections... 15 5.2.4 Limit design forces in pinned connections... 23 5.2.5 Limit design stresses in welded connections.... 27 5.3 Execution of the proof... 29 5.3.1 Proof for structural members... 29 5.3.2 Proof for bolted connections... 29 5.3.3 Proof for pinned connections.... 29 5.3.4 Proof for welded connections... 30 6 Proof of fatigue strength . 31 6.1 General... 31 6.2 Limit design stresses .. 6.2.1 Characteristic fatigue strength.... 32 6.2.2 Weld quality.... 33 6.2.3 Requirements for fatigue testing... .34 6.3 6.3.1 Determination of stress histories .... 35 6.3.2 Frequency of occurrence of stress cycles... .35 6.3.3 Stress history parameter... 6.3.4 Determination of stress history class, S .. 39 6.4 Executionoftheproof.. .40 6.5 Determination of the limit design stress range.... 6.5.1 Applicable methods .. .40 6.5.2 Direct use of stress history parameter .40 IS0 2016 - All rights reserved iii 3=ZHEJIANG INST OF STANDARDIZATION C1 5956617 networking permited without license from IHS IS0 20332:2016(E) 6.5.3 Use of S classes .41 6.5.4 Independent concurrent normal and/or shear stresses .... 7 Proof of elastic stability .43 7.1 7.2 Lateral buckling of members loaded in compression.. .43 7.2.1 Critical buckling load ... 7.2.2 Limit compressive design force .... 7.3 Buckling of plate fields subjected to compressive and shear stresses. .46 7.3.1 General. 46 7.3.2 Limit design stress with respect to longitudinal stress ox .... 7.3.3 Limit design stress with respect to transverse stress oy : 50 7.3.4 Limit design stress with respect to shear stress t .51 7.4 Execution of the proof.... 7.4.1 Members loaded in compression . 7.4.2 Plate fields ... .52 Annex A (informative) Limit design shear force, Fv,Rd, in shank per bolt and per shear plane for multiple shear plane connections. .54 Annex B (informative) Preloaded bolts .. Annex C (normative) Design weld stresses, Ow,Sd and Tw,Sd . ...57 Annex D (normative) Values of slope constant, m, and characteristic fatigue strength, Aoc, A