Designation:E1123−86(Reapproved2016)StandardPracticesforMountingTestSpecimensforSoundTransmissionLossTestingofNavalandMarineShipBulkheadTreatmentMaterials1ThisstandardisissuedunderthefixeddesignationE1123;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThesepracticesdescribetestspecimenmountingstobeusedfornavalandmarineshipapplicationsduringsoundtransmissionlosstestsperformedinaccordancewithTestMethodE90.1.2Thestructurespecifiedinthesepracticesisintendedformountingofsingle-layertreatmentsorcompositetreatmentsconsistingofvariousmaterialsandconfigurations.Acousticaltreatmentmaterialsmaybecombinationsofacousticalabsor-bentmaterials,limpmassseptums,andinsulationmaterials.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C634TerminologyRelatingtoBuildingandEnvironmentalAcousticsE90TestMethodforLaboratoryMeasurementofAirborneSoundTransmissionLossofBuildingPartitionsandElements3.SignificanceandUse3.1Thesoundtransmissionlossprovidedbyamaterialthatcoversaflatsurfacedependsnotonlyonthephysicalproper-tiesofthematerialbutalsoonthetypeofstructuretowhichitismountedandthemountingmethodused.3.2Navalandmarinearchitectsanddesignengineersre-quirespecifictransmissionlosscharacteristicsofacousticaltreatmentmaterialsastheywouldexhibitinstalledonaship’sstructure.Themountingstructureandproceduresspecifiedinthesepracticesareintendedtosimulatesuchashipboardenvironment.3.3TestreportsmayrefertothismountingbyPracticesE1123insteadofprovidingadetailedd...
