BSISO 17440:2014 BSl Standards Publication Cranes General design - Limit states and proof of competence of forged steel hooks bsi. ..making excellence a habit BS ISO 17440:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 17440:2014. The UK participation in its preparation was entrusted to Technical Committee MHE/3/3, Bridge, gantry and slewing jib cranes. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. @ The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0580 76509 4 ICS 53.020.20 Compliance witha British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Amendments/corrigenda issued sincepublication Date Text affected BS ISO 17440:2014 ISO INTERNATIONAL STANDARD 17440 First edition 2014-06-01 Cranes General design Limit states and proof of competence of forged steel hooks Appareilsde levage a charge suspendue-Conceptiongenérale- Etats limites et verification d'aptitude des crochets forgés Reference number IS017440:2014(E) O @ ISO 2014 BSISO17440:2014 IS0 17440:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO 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 [email protected] web www.iso.org Published in Switzerland ii ISO 2014-Allrights reserved BSISO17440:2014 IS0 17440:2014(E) Contents Page Foreword V 1 Scope .1 2 Normative references .1 3 .2 Terms, definitionsand symbols 4 General requirements. .5 4.1 Materials 5 4.2 Workmanship 6 4.3 Manufacturing tolerances 6 7 4.4 Heat treatment 4.5 Proof loading. 7 4.6 Hook body geometry 8 4.7 Hook shank machining. .9 4.8 Nut. 10 4.9 Hook suspension 11 5 Static strength .11 5.1 General. 11 5.2 Vertical design load 11 .12 5.3 Horizontal design force 5.4 Bendingmoment of the shank 12 5.5 Hook body, design stresses.. .16 5.6 Hook shank, design stresses. .18 5.7 Hook, proof of static strength 19 .20 6 Fatigue strength. 6.1 General 20 6.2 Vertical fatigue design force. 20 6.3 Horizontal fatiguedesign force. 21 6.4 Fatiguedesignbendingmoment ofshank 21 .22 6.5 Proof offatigue strength, hook body 6.6 .27 Proofoffatigue strength,hook shank 6.7 Fatigue design of hook shanks for serially produced hooks. .36 7 Verification ofconformitywiththe requirements .36 7.1 General. .36 7.2 Verification of manufacture. 36 7.3 Proof loading 36 7.4 None destructive testing (NDT) .36 7.5 Test sampling. .37 Information for use .37 8 8.1 Maintenanceand inspection .37 8.2 Marking .37 8.3 Safe use .38 AnnexA(informative)Samplesetsofsinglepointhooks .39 AnnexB(informative)Samplesetoframshornhooks .46 Annex C (informative) Annexes A and B static limit design forces for hook bodies. ..48 AnnexD (informative)Annexes Aand B fatiguelimit designforces for hookbodies .50 AnnexE (normative)Hookbodycalculationand specificspectrum ratiofactors .52 Annex F (informative) Sample fatigue strength calculations of proofed hooks (with proof load applied). .56 AnnexG (informative) Sample set of hook shank and thread designs .62 @ IS0 2014 - All rights reserved iii BS ISO 17440:2014 IS0 17440:2014(E) AnnexH (normative)Bending of curved beams 68 AnnexI (normative) Calculationof hook suspension tilting resistance, articulation bya hingeor rope reeving system 71 AnnexJ (informative)Guidanceforselection of hooksizeusingAnnexesCtoE 75 AnnexK(normative)Informatio