StandardPracticefor
InstallationofMetalCeilingSuspensionSystemsfor
AcousticalTileandLay-InPanels
1.1Thispracticecoverstheinstallationofsuspensionsys-
temsforacousticaltileandlay-inpanels.Itisapplicableto
contractorswhoseservicesareutilizedforinstallingacoustical
ceilingsandtoothertradesiftheiractivitiesareresponsiblefor
interferencewithceilingcomponentsorperformanceasde-
finedinthisrecommendedpractice.
1.2Whilethepracticesdescribedinthisdocumenthave
equalapplicationtoratedfire-resistivesuspensionsystems,
additionalrequirementsmayhavebeenimposedtoobtainthe
fireenduranceclassificationofparticularfloor-ceilingorroof-
ceilingassemblies.Thesedetailsshouldbeobtainedfromthe
manufacturers.
1.3Similarly,additionaldetailingmaybenecessarytomeet
soundattenuationrequirementswhenceilingplenumsextend
overcontiguousrooms.These,too,shouldbeobtainedfrom
themanufactureroftheacousticalmaterialemployed.
1.4ThevaluesstatedineitherSIunitsorinch-poundunits
aretoberegardedseparatelyasstandard.Thevaluesstatedin
eachsystemmaynotbeexactequivalents;therefore,each
systemshallbeusedindependentlyoftheother.Combining
valuesfromthetwosystemsmayresultinnon-conformance
withthestandard.
1.5Whilemanyofthepracticesdescribedinthispractice
haveapplicationtotheinstallationofmetalsuspensionsystems
inexteriorenvironments,thespecificdesignofexteriorceiling
installationsrequiresthereviewandapprovalofthearchitect
orengineer,orboth,whoareresponsiblefortheconstruction
ofthebuildingormodificationstoanexistingbuilding.While
recommendationsfromthemanufacturershouldbesolicited,it
remainsthefinalresponsibilityofthearchitect/engineerto
ensureproperapplicationofthematerialsinquestion.
1.6 Thisstandarddoesnotpurporttoaddressofthesafety
concerns,ifany,associatedwithitsuse.Itistheresponsibility1918