1、ANSI-ASC A14.9-2010Revision of A14.9-2004American National StandardsAmerican National Standard Safety Requirements for DisanullearinnullAttic StairnullysANSI-ASCA14.9-2010Revision of ANSI A14.9-2004American National Standard Safety Requirements for DisanullearinnullAttic StairnullysSecretariatAmeric
2、an nulldder Institute Approved April 30, 2010American National Standards InstitutenullInc.For information on possible errata sheets and other ANSI-ASC A14 Standards please refer to the ALI nullbsite located atnullnullnull .americanladderinstitute.ornulliAn American National Standard implies a consen
3、sus 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 have approved t
4、he 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 National Standard
5、s 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 Standards nullstit
6、ute.CAUTION NOTICE: This American National Standard may be revised or withdrawn at anytime.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 publication. nullrcha
7、sers 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 by ANSnullAccredited Standard
8、s 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 Standardiinullrenullrdnullhi
9、s nulloreword is not a part of the American National Standard Anull.nullnull nullnullnullnullThis standard is the revised version of the American National Standard Safety nullnullirements for nullsappearing Attic Stairways nullormerly nulliling nullunted nullsappearing nullimbing Systems, ANSnullAnu
10、ll.nullnullnullnull null is one of a series of seven standards prepared under the supervision of the American National Standards nullstitute. The other safety standards includenull Anull.nullnullrtable nullood nullddersnullnullnull.null nulletal nulladdersnull Anullnull.null nullixed nulladdersnull
11、nullnull.null nullobnullnullade nullddersnullAnull.nullnullrtable nullinforced nullastic nulldders and Anull.nullnullbile nulldder Stands and nullbile nulldder Stand nullatforms.All seven standards derive from the original American National Standard Safety nullode for nullonstruction, nullare and nu
12、lle of nulldders, Anull, which was first approved in nullnull. nullvisions were approved over the years as renullired.Subcommittee Anullnull.null was created for the purpose of developing rules to govern the safe design, construction, testing, care and use of permanently installed folding or collaps
13、ible fixed aluminum or wood attic ladders of various types. All parts and appurtenances necessary for safe and efficient attic ladders shall be considered integral parts of the design. The Anull.nullstandard was submitted to the ASnullAnull nullmmittee for review in November of nullnull and approved
14、 on April null, null nullThis standard does not apply where training, supervision or established safety procedures are in conflict with or serve in lieu of this standard.Suggestions for improvement of this standard will be welcome. They should be sent to the ASnull Anullnull nullommittee cnull the A
15、merican nulldder nullstitute at nullnullN. nullchigan Avenue, Suite nullnull, nullicago, null nullnullnull All comments must be sent on the nullficial nullmment nullorm that can be found on the last page of this document. nullch comment must include a rationale.This standard was processed and approv
16、ed for submittal to ANSnullby American National Standards nullmmittee on the safety renulluirements for nullisappearing Attic Stairways, ASnull Anullnull.null. nullommittee approval of the standard does not necessarily imply that all the committee members voted for its approval. At the time it appro
17、ved this standard, the ASnullAnull nullmmittee had the following membersnullnullick nullox, nullairmannulln nullbson, nullice nullairnullnet nullpp, SecretariatiiiOrnullninulltion nullpresented Name of nullpresentativeAmerican nullsurance Association . . . . . . . . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullor ge nullrhartThomas nullrray nullltnullAmerican nulldder nullstitute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullrc nullnullnnellAmerican Society
19、 of Safety nullgineers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullchael nullrennullAssociated nullneral nullntractors of America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . null
20、arles nullrdnullchele nullers nullltnullnullnadian Standards Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullalter nullcknullsco nullme and nullfice nulloducts . . . . . . . . . . . . . . . . . . . . . . . . .
21、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullic nulluseTerry nullerson nullltnullnullsappearing Attic Stairway Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnnis nullilliamsnullad nulldspeth nulll
22、tnullnulllinois Association of nullilding nullintenance nullntractors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullrl nulldersen nullmes nulleil nullltnullnullternational nullotherhood of nullectrical nullorkers . . . . . . . . . . . . . . . . . . . . . . . . . .
23、 . . . . . . . . . . . . . . . . . . nullmes Tomaseskinullternational nullotherhood of nullainters and Allied Trades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullian nullstinenullternational nullion of nullicklayers nullAllied nullaftsmen . . . . . . . . . .
24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnry nullamernullk e nullssman nullltnullnulltal nulldder nullnufacturers Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .null ve nullotnernullle nullng nullltnullNa
25、tional nullre nullotection Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Samuel null nullamernullnald nullnnett nullltnullNational nullame nullilders Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . . . . . . . . . . .Stan nullirklernullecision nulldders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nulln nullnullnneySteve nullchey nullltnullnullsk nulltention Services . . .
27、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullaul null nullniusnullbert null Stuligross nullltnullScaffold nulldustry Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28、 . . . . . . . . . . . . . . . .Alan nulline nullltnullSteel nullate nullabricators Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullallace nulllvinnullS. nullnsumer nulloduct Safety nullmmission . . . . . . . . . . . .
29、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Thomas nulltonnullnullrk null nullumagainullnullltnullnullS. nullpt. of nullbor nullnull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullirginia nulltnu
30、llernullnullbert nullllnullnullltnullnulldependent Specialists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnald nulloswicknullhn null nullhnsonnullor ge null nullyankanullving nullalvoSteven nullamernullonnulloti
31、ng advisory memberivSubcommittee Anull.nullnullsappearing Attic Stairways, which developed this standard, consisted of the following membersnullnulln nuller nulllen, nullairmannullger nullllTom nulloderickAndy nullvisnullwin nullvisnullad nulldspethTony nullffinenullle nullngnullorge nullyankanulln
32、nullnullnneynullchael nullan nulleenullnnis nullilliamsThomas nulleaglinvSection nullnullnull Scope and nullrpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull Scope . . . . . . . .
33、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullrpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34、. . . . . . . . . . . . . . . . . . .nullnull nullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull Application . . . . . . . . . . . . . . . . . . . . . . . . .
35、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullterpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnu
36、llnull nullndatory and Advisory nullovisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nulluivalent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37、. . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullfective nullte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullfer enced Standards. . . . . . . . . . . . . . . . .
38、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullfinitions and Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull n
39、ullterials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullfinition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullrdware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullasteners . . . . . . . . . . .
41、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42、 . . . . . . . . . . . .nullnullnull nullsis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
43、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullood Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull Struct
44、ural nullood nullarts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
45、. . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull Side nullil nullading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull Step nullading . . . . . . . . . . . . . . . . . . . .
46、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull Step Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .null
47、Contentsvinull Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull Tests for nullsappearing Attic Stairways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullbeling Tests . . . . . . . . .
49、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullbelinnull nullnullrnullnnull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnull nulloduct nullta nullformation nullrkings . . . . . . . . . . . .
