ISO INTERNATIONAL STANDARD 4301-5 First edition 1991-09-15 Cranes-- Classification Part 5: Overhead travelling and portal bridge cranes Appareils delevage a charge suspendue --Classification- Partie5:Ponts roulants etpontsportiques Referencenumber ISO 4301-5:1991(E) ISO4301-5:1991(E) Foreword iso (the International Organization for Standardization) is a woridwide federation of nationaf standards bodies (iso member bodies).The work of preparing International Standards is normally carried out through Iso technicalcommittees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso,also take part in the work.Iso collaborates closely with the International Electrotechnical Commission (IEC)on allmatters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75%of the member bodies casting a vote. International StandardIso4301-5waspreparedbyTechnical Committee ISo/TC 96, Cranes, Sub-Committee SC g.Bridge andgantry cranes. ISO4301 consists of the following parts, under the general title Cranes -- Classification: Part1:General -Part2:Mobilecranes -Part3:Towercranes -Part4:Jibcranes Part5:Overheadtravellingandportalbridgecranes ISO 1991 All rights reserved.No partof this publication may be reproduced or utilized in anyform or byany means,electronicor mechanical, including photocopying and microfilm,without permission in writing from the publisher. InternationalOrganizationfor Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland ii ISO 4301-5:1991(E) INTERNATIONALSTANDARD Cranes sClassification Part 5: Overhead travelling and portal bridge cranes Scope tion of the standard indicated below. Members of 1 IEC and ISO maintain registers of currently valid This partofIsO4301establishesthe classification InternationalStandards. of overhead travelling cranes and portal bridge Iso 4301-1:1986.Cranes and lifting appliances cranes based on the number of operating cycles to Classification-Part 1:General. be carried out during the expected life of the ap- pliance and its mechanisms,and aload spectrum factor which represents the nominal state of loading. 3 Classification The crane as a whole and its mechanisms shall be 2 Normative reference classified inaccordance withisO4301-1. The folfowing standard contains provisions which, Guidance as to typical classifications for overhead through reference in this text, constitute provisions travelling cranes andportal bridge cranes in relation of this part of IsO 4301.At the time of publication, to usage is given in table 1. the edition indicated was valid. All standards are subjecttorevision,andpartiestoagreementsbased Where the class of utitization and state of loading onthis partof isO4301areencouragedtoinvesti- are not known,the classification should be regarded gate the possibitity of applying the most recent edi- as a minimum.