1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2012 SAE International All rights reserved. No part of this pub
3、lication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970
4、(outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1257_201202SURFACEVEHICLERECOMMENDEDPRACTICEJ1257 FEB2012 Issued 1979-04Reaffirmed
5、2012-02 Superseding J1257 OCT1980 Rating Chart for Cantilevered Boom Cranes RATIONALEJ1257 has been reaffirmed to comply with the SAE five-year review policy. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from
6、IHS-,-,-SAE J1257 Reaffirmed FEB2012 Page 2 of 34 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J1257 Reaffirmed FEB2012 Page 3 of 34 REAFFIRMED BY THE SAE CRANES AND LIFTING DEVICES COMMITTEE
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17、t license from IHS-,-,-SAE J1257 Reaffirmed FEB2012 Page 19 of 34 Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J1257 Reaffirmed FEB2012 Page 20 of 34 Copyright SAE International Provided by IH
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