ISO INTERNATIONAL STANDARD 16754 First edition 2008-06-15 Earth-moving machinery - Determination of average ground contact pressure for crawler machines EnginsdeterrassementDeterminationdelapressionmoyennede contactausoldesenginsachenilles Reference number ISO 16754:2008(E) @ISO 2008 ISO16754:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHTPROTECTEDDOCUMENT ISO 2008 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 so at the address below or ISO copyright office Case postale 56.CH-1211Geneva 20 Tel. + 4122 749 0111 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ISo2008All rights reserved ISO 16754:2008(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (isO member bodies)._The work of preparing International Standards is normally carried out through isO technical committees. Each member body interested in a subject for which a technical committee has been International Electrotechnical Commission (IEC)on all matters of electrotechnical standardization. adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Testmethodsrelatingtomachineperformance. @ISO2008-Allrights reserved INTERNATIONALSTANDARD ISO16754:2008(E) Earth-moving machinery Determination of average ground contactpressureforcrawlermachines Scope This International Standard specifies a uniform method for calculating the average ground contact pressure of self-propelled and towed crawler (track-laying) earth-moving machines, as defined in IsO 6165, on soft surfaces with empty equipment orattachment. The average ground contact pressure value is used only for comparing different machine models. Actual ground contact pressure values under operating conditions will vary depending on load, position of the centre of gravity, terrain, track shoe type and size, and surface conditions. NOTE 1 Alternative methods for determining ground contact pressure could apply to some specific machine families. NOTE 2 The calculation makes allowance for some penetration into the supporting soil surface and the resulting increase in support area. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments)applies. Iso6165:2006,Earth-movingmachinery—Basictypes—ldentificationandtermsanddefinitions Iso6746-1:2003,Earth-movingmachinery-Definitions of dimensionsandcodes-Part1:Basemachine 3 Terms and definitions For the purposes of this document, the terms and definitions given in IsO 6746-1 and the following apply 3.1 operatingmass OM with sprinkler water tank(s) half-full NOTE 1 The mass of an operator is not included for non-riding machines. NOTE 2 Ballast mass included at delivery can be included if specified by the manufacturer. NOTE 3 The operating mass is expressed in kilograms. [ISO 6016] @ ISO 2008 - All rights reserved 1 ISO 16754:2008(E) 3.2 overallcrawlerlengt