A_NFPA92B

NFPA92BGuideforSmokeManagementSystemsinMalls,Atria,andLargeAreas2000EditionNFPA,1BatterymarchPark,POBox9101,Quincy,MA02269-9101AnInternationalCodesandStandardsOrganizationNFPALicenseAgreementThisdocumentiscopyrightedbytheNationalFireProtectionAssociation(NFPA),1BatterymarchPark,Quincy,MA02269-9101USA.Allrightsreserved.NFPAgrantsyoualicenseasfollows:TherighttodownloadanelectronicfileofthisNFPAdocumentfortemporarystorageononecomputerforpurposesofviewingand/orprintingonecopyoftheNFPAdocumentforindividualuse.Neithertheelectronicfilenorthehardcopyprintmaybereproducedinanyway.Inaddition,theelectronicfilemaynotbedistributedelsewhereovercomputernetworksorotherwise.Thehardcopyprintmayonlybeusedpersonallyordistributedtootheremployeesfortheirinternalusewithinyourorganization.8/00Copyright©NFPAOneBatterymarchParkQuincy,Massachusetts02269IMPORTANTNOTICEABOUTTHISDOCUMENTNFPAcodes,standards,recommendedpractices,andguides,ofwhichthedocumentcontainedhereinisone,aredevelopedthroughaconsensusstandardsdevelopmentprocessapprovedbytheAmericanNationalStandardsInstitute.Thisprocessbringstogethervolunteersrepresentingvariedviewpointsandintereststoachieveconsensusonfireandothersafetyissues.WhiletheNFPAadministerstheprocessandestablishesrulestopromotefairnessinthedevelopmentofconsensus,itdoesnotindependentlytest,evaluate,orverifytheaccuracyofanyinformationorthesoundnessofanyjudgmentscontainedinitscodesandstandards.TheNFPAdisclaimsliabilityforanypersonalinjury,propertyorotherdamagesofanynaturewhatsoever,whetherspecial,indirect,consequentialorcompensatory,directlyorindirectlyresultingfromthepublication,useof,orrelianceonthisdocument.TheNFPAalsomakesnoguarantyorwarrantyastotheaccuracyorcompletenessofanyinformationpublishedherein.Inissuingandmakingthisdocumentavailable,theNFPAisnotundertakingtorenderprofessionalorotherservicesfororonbehalfofanypersonorentity.NoristheNFPAundertakingtoperformanydutyowedbyanypersonorentitytosomeoneelse.Anyoneusingthisdocumentshouldrelyonhisorherownindependentjudgmentor,asappropriate,seektheadviceofacompetentprofessionalindeterminingtheexerciseofreasonablecareinanygivencircumstances.TheNFPAhasnopower,nordoesitundertake,topoliceorenforcecompliancewiththecontentsofthisdocument.NordoestheNFPAlist,certify,testorinspectproducts,designs,orinstallationsforcompliancewiththisdocument.AnycertificationorotherstatementofcompliancewiththerequirementsofthisdocumentshallnotbeattributabletotheNFPAandissolelytheresponsibilityofthecertifierormakerofthestatement.Seeinsidebackcoverforadditionalimportantnoticesandinformation.NOTICESAllquestionsorothercommunicationsrelatingtothisdocumentandallrequestsforinformationonNFPAproceduresgoverningitscodesandstandardsdevelopmentprocess,includinginformationontheproceduresforrequestingFormalInterpretations,forproposingTentativeInterimAmendments,andforproposingrevisionstoNFPAdocumentsduringregularrevisioncycles,shouldbesenttoNFPAheadquarters,addressedtotheattentionoftheSecretary,StandardsCouncil,NationalFireProtectionAssociation,1BatterymarchPark,P.O.Box9101,Quincy,MA02269-9101.UsersofthisdocumentshouldbeawarethatthisdocumentmaybeamendedfromtimetotimethroughtheissuanceofTentativeInterimAmendments,andthatanofficialNFPAdocumentatanypointintimeconsistsofthecurrenteditionofthedocumenttogetherwithanyTentativeInterimAmendmentsthenineffect.InordertodeterminewhetherthisdocumentisthecurrenteditionandwhetherithasbeenamendedthroughtheissuanceofTentativeInterimAmendments,consultappropriateNFPApublicationssuchastheNationalFireCodesSubscriptionService,visittheNFPAwebsiteat(NFPA).Bymakingthisdocumentavailableforuseandadoptionbypublicauthoritiesandothers,theNFPAdoesnotwaiveanyrightsincopyrighttothisdocument.1.AdoptionbyReference—Publicauthoritiesandothersareurgedtoreferencethisdocumentinlaws,ordinances,regulations,administrativeorders,orsimilarinstruments.Anydeletions,additions,andchangesdesiredbytheadoptingauthoritymustbenotedseparately.ThoseusingthismethodarerequestedtonotifytheNFPA(Attention:Secretary,Stan