ASME_A120-1-2008.pdf

AN AMERICAN NATIO NAL STANDARDSafety Requirements for Powered Platforms and Traveling Ladders and Gantries for Building MaintenanceASME A120.1-2008(Revision of ASME A120.1-2006)Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies/5914950002 Not for Resale,05/13/2009 00:13:17 MDTNo reproduction or networking permitted without license from IHS-,-,-ASME A120.1-2008(Revision of ASME A120.1-2006)Safety Requirementsfor Powered Platformsand Traveling Laddersand Gantries forBuilding MaintenanceAN AMERICAN NATIONAL STANDARDCopyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies/5914950002 Not for Resale,05/13/2009 00:13:17 MDTNo reproduction or networking permitted without license from IHS-,-,-Date of Issuance:September 5,2008The next edition of this Standard is scheduled for publication in 2011.There will be no addendaissued to this edition.ASME issues written replies to inquiries concerning interpretations of technical aspects of thisStandard.Interpretations are published on the ASME website under the Committee Pages athttp:/cstools.asme.org as they are issued.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards.The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate.The proposed code or standard was madeavailable forpublic review andcomment thatprovides an opportunityfor additional publicinput from industry,academia,regulatory agencies,and the public-at-large.ASME does not“approve,”“rate,”or“endorse”any item,construction,proprietary device,or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document,and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent,nor assumes any such liability.Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights,and the risk of infringement of such rights,isentirely their own responsibility.Participation by federal agency representative(s)or person(s)affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies,which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersThree Park Avenue,New York,NY 10016-5990Copyright 2008 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.Copyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies/5914950002 Not for Resale,05/13/2009 00:13:17 MDTNo reproduction or networking permitted without license from IHS-,-,-CONTENTSForeword.ivCommittee Roster.vCorrespondence With the A120 Committee.viSummary of Changes.vii1General Recommendations and Definitions.12Building Design Requirements.53Equipment Design and Construction Requirements.74Traveling Ladders and Gantries.195Inspections,Tests,Operation,and Maintenance.21Table4.3.2Access.20Mandatory AppendixIOperating Manual Layout.23iiiCopyright ASME International Provided by IHS under license with ASME Licensee=FMC Technologies/5914950002 Not for Resale,05/13/2009 00:13:17 MDTNo reproduction or networking permitted without license from IHS-,-,-FOREWORDThis Standard provides for the safe design of powered platforms for building maintenance,where window cleaning and related services are accomplished by means of suspended equipmentat heights in excess of 35 ft(11 m)above a safe surface,e.g.,grade,street,floor,or roof level.The provisions of the Standard are intended to apply to all known systems used to supportsuspended maintenance equipment as well as the suspended equipment itself(either permanentlyinstalled or transportable equipment).Guidelines are also included for a buildings structuralsupport areas as well as the building surfaces that actually interface with the equipment.The Standard does not apply to other suspended powered platforms used for remedial renova-tions or modifications to buildings.The safe use of these types of scaffolds is addressed byAmerican National Standard ANSI A10.8.The A120.1 Standard also does not relate to any serviceperformed by persons supported by equipment covered by any of the ANSI A92 standards.The purpose of this Standard is to ensure the protection of all powered platform users as wellas persons potentially exposed to use of the equipment.In developing thi