ISO INTERNATIONAL 8686-3 STANDARD Second edition 2018-09 Cranes Design principles for loads and load combinations Part 3: Tower cranes Appareil de levage a charge suspendue - Principes de calcul des charges et des combinaisons de charges - Partie3:Grues a tour Reference number IS0 8686-3:2018(E) ISO @ IS0 2018 IS0 8686-3:2018(E) COPYRIGHTPROTECTEDDOCUMENT @IS02018 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 beloworIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Fax: +4122 749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii IS02018-Allrights reserved IS0 8686-3:2018(E) Contents Page Foreword iv 1 Scope 1 2 Normative references. 3 Terms and definitions. .1 4 Symbols and abbreviated terms. .2 5 General. .2 6 Loads .2 6.1 2 General 6.2 Loads and values for dynamic factors, Φi 2 6.3 Loads due to out-of-service wind 4 6.3.1 General. 4 Loads due to out-of-service wind from rear 6.3.2 6 6.3.3 Loads due to out-of-service wind from front 7 6.3.4 Loads due to out-of-service wind from side 7 6.4 Loadscausedbyerection,dismantlingandtransport 8 6.5 Loadsonmeansprovidedforaccess 9 7 Load combinations. .10 7.1 General 10 7.2 Favourable and unfavourable masses 10 7.3 Partial safety factors for the mass of the crane 13 7.4 High risk applications.. 14 7.5 Load combinations for the proof of strength 14 7.6 Load combinations for the proof of fatigue 17 7.7 Load combinations for the proof of stability 17 7.8 Resistance to drifting caused by wind (travelling cranes) 19 Loads on crane support structure 8 .19 8.1 General 19 8.2 Load combinations .20 Annex A (normative) Loads and load combinations for climbing systems .21 Bibliography 23 @ IS0 2018 - All rights reserved iii