Designation:C636/C636M−13StandardPracticeforInstallationofMetalCeilingSuspensionSystemsforAcousticalTileandLay-InPanels1ThisstandardisissuedunderthefixeddesignationC636/C636M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoverstheinstallationofsuspensionsys-temsforacousticaltileandlay-inpanels.Itisapplicabletocontractorswhoseservicesareutilizedforinstallingacousticalceilingsandtoothertradesiftheiractivitiesareresponsibleforinterferencewithceilingcomponentsorperformanceasde-finedinthisrecommendedpractice.1.2Whilethepracticesdescribedinthisdocumenthaveequalapplicationtoratedfire-resistivesuspensionsystems,additionalrequirementsmayhavebeenimposedtoobtainthefireenduranceclassificationofparticularfloor-ceilingorroof-ceilingassemblies.Thesedetailsshouldbeobtainedfromthemanufacturers.1.3Similarly,additionaldetailingmaybenecessarytomeetsoundattenuationrequirementswhenceilingplenumsextendovercontiguousrooms.These,too,shouldbeobtainedfromthemanufactureroftheacousticalmaterialemployed.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.5Whilemanyofthepracticesdescribedinthispracticehaveapplicationtotheinstallationofmetalsuspensionsystemsinexteriorenvironments,thespecificdesignofexteriorceilinginstallationsrequiresthereviewandapprovalofthearchitectorengineer,orboth,whoareresponsiblefortheconstructionofthebuildingormodificationstoanexistingbuilding.Whilerecommendationsfromthemanufacturershouldbesolicited,itremainsthefinalresponsibilityofthearchitect/engineertoensureproperapplicationofthematerialsinquestion.1.6Thisstandarddoesnotpurpo...
