1、ANSI-ASC A14.7-2011American National StandardsAmerican National Standard for Mobile Ladder Stands and Mobile Ladder Stand PlatformsANSI-ASC A14.7-2011Revision of ANSI A14.7-200nullAmerican National Standard SafetnullRenullirements for Mobile Ladder Stands and Mobile Ladder Stand PlatformsSecretariat
2、American Ladder Institnulle Approved January 20, 2012American National Standards InstitnullenullInc.For information on possible errata sheets and other ANSI-ASC A1null Standards please refer to the Anull nullbsite located atnullnullnull.americanladderinstitnulle.ornulliAn American National Standard
3、implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether they
4、 have approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest editions and errata sheets.The American N
5、ational Standards nullstitute does not develop standards and will in no circumstances give an interpretation of any American National Standard. nullreover, no persons shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National St
6、andards nullstitute.CAUTION NOTICE: This American National Standard may be revised or withdrawn at anytime. The procedures of the American National Standards Institute renullire that action be tanullen to reaffirmnullrevisenullor withdraw this standard no later than five years from the date of publi
7、cation. nullrchasers of American National Standards may receive current information on all standards by callinnullor writinnullthe American National Standards Institute.nullblished byAmerican nulldder Institute nullnullN. nullchinulln AvenuenullChicanullnullInullnullnullnullnullpyright nullnull by A
8、NSnullAccredited Standards nullmmittee nullSnull Anull All rights reserved.No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.nullinted in the nullited States of AmericaAmerican National Sta
9、ndardiinullrenullrdnullhis forward is not a part of American National Standard Anull.nullnullnull.nullThis standard is a revision of American National Standard Anull.nullnullnull. null is one of a series of many standards approved by the Accredited Standards nullmmittee nullSnull Anull.nullrior to t
10、he initial publishing of Anullnull.nullnullnullnullnullnull, the product types covered by this standard were found in Anull.null nullher products found in Anull.null such as manually propelled scaffolds nullowersnull are now under the jurisdiction of Anull.nullnulle very important distinction to be
11、made about the products identified in this standard is that these products are primarily used in the workplace, generally purchased to perform a specific task, and nulluite often remain in the same work area throughout their useful life. They are not intended to be broken down and rebuilt once initi
12、ally constructed.The majority of changes in the current revision are administrative in nature to provide additional clarity and direction to manufacturers and users. nullere differences had existed, for example, denullitions or testing criteria, Anull.nullhas been brought in line with other Anull st
13、andards. Suggestions for improvement of this standard will be welcome. They should be sent to the American nulldder nullnstitute, nullnullnull North nullichigan Avenue, nullhicago, nulllinois nullnullnullThis standard was processed and approved for submittal to ANSnullby the accredited American Nati
14、onal Standards nullmmittee on Safety in the nullnstruction, nullre, and nulle of nulladders, Anullnull. nullommittee approval of the standard does not necessarily imply that all the committee members voted for its approval. At the time it approved this standard the Anull nullmmittee had the followin
15、g membersnullnullick nullox, nullairmannullve nullotner, nullice nullairnullnet nullpp, SecretariatiiiOrnullninulltion nullpresented Name of nullpresentativeAmerican nullsurance Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16、. . . nullorge nullrhartAmerican nulldder nullstitute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nulln Schwartnullnullrc nullnullnnell nullltnullAmerican Society of Safety nullgineers . . . . . . . . . . . . . . . .
17、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullchael nullrennullAssociated nullneral nullntractors of America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullarles null nullrdnullnadian Standards Association . . . . .
18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nulleste Simonettanullsco nullme and nullfice nulloducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullic nulluseT
19、erry nullerson nullltnullnullatherlite nulldustries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullrry Turgeon nullolfgang nulllhard nullltnullnulllinois Association of nullilding nullintenance nullntractors
20、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullrl nulldersen nullmes nulleil nullltnullnullternational nullotherhood of nullectrical nullorkers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullmes Tomaseskinullternational
21、 nullotherhood of nullainters and Allied Trades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nulleg nullnnenulln nullnski nullltnullnullternational nullion of nullicklayers nullAllied nullaftsmen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22、 . . . . . . . .nullrald Scaranonulluisville nulldder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Tom SchmittNational nullre nullotection Association . . . . . . . . . . . . . . . . . . . . . . . . . .
23、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Scott nullamerSamuel null nullamer nullltnullNational nullame nullilders Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stan nullirklernullecision nulldders
24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nulln nullnullnneySteve nullchey nullltnullnullsk nulltention Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25、. . . . . . . . . . . . . . . . . . . . .nullaul null nullniusnullbert null Stuligross nullltnullScaffold nulldustry Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Alan nulline nullouise Schultnullnullltnull
26、Steel nullate nullabricators Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nulln nullkernullS. nullnsumer nulloduct Safety nullmmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、. . . . . . . . . Thomas nulltonnullnullrk null nullumagainullnullltnullnullS. nullpt. of nullbor nullnull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullirginia nulltnullernullnullbert nullllnullnullltnullnullerner nulldde
28、r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullett nulltimernullle nullng nullltnullnulldependent Specialists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、 . . . . . . . . . . . . . . . . . . null. nullnald nulloswicknull. nullorge null nullyankanull. nullving nullalvonullonnulloting advisory memberivSubcommittee Anull.nullnullbile nulldder Stands and nullbile nulldder Stand nullatforms, which developed this standard, had the following membersnullnull
30、rtin Silverman, nullairmannullederick nullrtnickinullnald nullnnettThomas nullesnahanScott nullamernullilliam null. nullameTony nullffine nulleceasednullnullm nullerrnullick nulloxnullic nullcekTom nullchardsonTom Schmittnullilliam null Switalskinullm Tomaseskinullke nullan nulleenullvid nulloungvSe
31、ction Panullnulltroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnull Scope and nullrpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnull Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullrpose . . . . . . . .
33、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullceptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34、. . . . . . . . . . .nullnull nullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnull Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullterpretations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullfective nullte .
36、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullfinitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37、. . . . . . . . . . . . . . . . . nullnull nullnullirements for nullbile nulldder Stands and nullbile nulldder Stand nullatforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullneral nullnullirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnull nullad nullting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnull nullsign nullnullirements nullnullbile nul
39、ldder Stands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnull nullsign nullnullirements nullnullbile nulldder Stand nullatforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullrformance nullnu
40、llirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullneral nullnullirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41、. . . . . . . . . . . . . nullnullnull Stability Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullad Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullbeling Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullre and nulle of nullbile null
43、dder Stands and nullbile nulldder Stand nullatforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnull nullbeling nullnullrking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .n
44、ullnullnull nullneral nullnullirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnull nullnufacturersnullnulloduct nullta nullformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
45、. . . . . . . . . . . . . . . . . . . . .nullnullnull Additional nuller nullformation and nullnull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnull nullintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
46、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnull nullnufacturersnullnullstructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnull nullnersnullnull
47、sponsibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullresFigure 1 Stability Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48、 . . . . . . . . . . . . . . . . . .9Figure null Step/Platform and Unit Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10AnullendicesAppendix A (1) Mobile Ladder Stand Nomenclature . . . . . . . . . . . . . . . . . .
49、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Appendix A nullnullnull Mobile Ladder Stand Platform Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12Appendix A (3) Mobile Ladder Stand Platform Nomenclature (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Appendix B Examples of Some Typical Mobile Ladder Stands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Appendix C Examples of Some Typical Mobile Ladder Stand Platforms . . . . . . . .
