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 consens
3、us 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 th
4、e 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 Standards
5、 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 nullstitu
6、te.CAUTION NOTICE: This American National Standard may be revised or withdrawn at anytime.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. nullrchas
7、ers 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 Standards
8、 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 Standardiinullrenullrdnullhis
9、 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, ANSnullAnul
10、l.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 n
11、ullnull.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 nul
12、le 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 collapsi
13、ble 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 Am
15、erican 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 approve
16、d 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 approv
17、ed this standard, the ASnullAnull nullmmittee had the following membersnullnullick nullox, nullairmannulln nullbson, nullice nullairnullnet nullpp, SecretariatiiiOrnullninulltion nullpresented Name of nullpresentativeAmerican nullsurance Association . . . . . . . . . . . . . . . . . . . . . . . . .
18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullorge nullrhartThomas nullrray nullltnullAmerican nulldder nullstitute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullrc nullnullnnellAmerican Society o
19、f Safety nullgineers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullchael nullrennullAssociated nullneral nullntractors of America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullar
20、les nullrdnullchele nullers nullltnullnullnadian Standards Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullalter nullcknullsco nullme and nullfice nulloducts . . . . . . . . . . . . . . . . . . . . . . . . .
21、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullic nulluseTerry nullerson nullltnullnullsappearing Attic Stairway Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnnis nullilliamsnullad nulldspeth null
22、ltnullnulllinois 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 nullamernullke nullssman nullltnullnulltal nulldder nullnufacturers Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullve 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 null
30、tnullernullnullbert nullllnullnullltnullnulldependent Specialists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnald nulloswicknullhn null nullhnsonnullorge null nullyankanullving nullalvoSteven nullamernullonnullo
31、ting 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 nullyankanull
32、n nullnullnneynullchael nullan nulleenullnnis nullilliamsThomas nulleaglinvSection nullnullnull Scope and nullrpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullScope . . . . . . .
33、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullnullrpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34、. . . . . . . . . . . . . . . . . . . .nullnull nullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullApplication . . . . . . . . . . . . . . . . . . . . . . . . .
35、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullnullterpretation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . null
36、nullnullnullndatory and Advisory nullovisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullnulluivalent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
37、 . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullnullfective nullte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullferenced Standards . . . . . . . . . . . . . . . . .
38、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullfinitions and Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnull
39、nullterials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullnullfinition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullnullrdware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullnullasteners . . . . . . . . . . . .
41、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42、. . . . . . . . . . . .nullnullnullnullsis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullnullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
43、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnull nullood Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullStructur
44、al nullood nullarts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullnullame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
45、 . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullSide nullil nullading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullStep nullading . . . . . . . . . . . . . . . . . . . . . .
46、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullStep Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullCont
47、entsvinull Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullnullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullTests for nullsappearing Attic Stairways . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullnullbeling Tests . . . . . . . . . . .
49、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnull nullbelinnullnullnullrnullnnull . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .nullnullnullnullneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nullnullnullnulloduct nullta nullformation nullrkings . . . . . . . . . . . . . . . .
