Designation:E2964−14StandardTestMethodforMeasurementoftheNormalizedInsertionLossofDoors1ThisstandardisissuedunderthefixeddesignationE2964;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThistestmethodispartofasetofstandardsforevaluatingthesound-insulatingpropertiesofbuildingelementsandthesoundisolationbetweenspaces.Itisdesignedtomeasurethefieldsoundisolationperformanceofdoors.Othersinthesetcovertheairbornesoundtransmissionlossofanisolatedpartitionelementinacontrolledlaboratoryenvironment(TestMethodE90),fieldmeasure-mentsofthesoundisolationbetweenroomsinbuildings(TestMethodE336),thelaboratorymeasurementofimpactsoundtransmissionthroughfloors(TestMethodE492),themeasurementofimpactsoundtransmissioninbuildings(TestMethodE1007),themeasurementofsoundtransmissionthroughbuildingfacadesandfacadeelements(GuideE966),andthemeasurementofsoundtransmissionthroughacommonplenumbetweentworooms(TestMethodE1414).1.Scope1.1ThesoundinsulationpropertiesofadooraremeasuredinalaboratoryasthesoundtransmissionlossinaccordancewithTestMethodE90.Usingthosedatasinglenumberratingsoundtransmissionclass(STC)isassigned.Inthefield,theroomsononeorbothsidesofapartitioncontainingadoorareofteneithertoosmallortoolargeandabsorptivetoallowtheapparenttransmissionloss(ATL)ofthepartition-doorassem-blytobemeasured.Evenifthatisnotthecase,theresultmeasuredisthecompositeATLofthepartitionincludingthedoor,andnotthatofthedooritself.TestMethodE336actuallystatesthatitisimpossibletomeasuretheATLofaportionofapartitionsuchasadooraccordingtotheproceduresofthatstandard.Thistestmethodprovidesamethodofevaluatingdoorsinsuchcasesusinganormalizedinsertionlosswitharesultingsinglenumberratingdoortransmissionclass,DTC.Thismethodisintendedprimarilyforhingedpersonneldoorswithlatchingmechanismsandislimitedtodooropeni...
