Designation:D5848−20StandardTestMethodforMassPerUnitAreaofPileYarnFloorCoverings1ThisstandardisissuedunderthefixeddesignationD5848;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthemeasurementofmassperunitareaofmachine-madewoven,knitted,andtuftedpileyarnfloorcoveringbothbeforeandafteranadhesive-backcoatingapplication.1.2Thistestmethodencompassesthreetechniquesfordeterminationofmassperunitareaasapplicable:1.2.1Section7,fordeterminingtotalmassperunitarea,appliestobothcoatedanduncoated(unfinished)pilefloorcoverings.1.2.2Section8,fordeterminingcomponentmassperunitarea,appliesonlytouncoated(unfinished)pileyarnfloorcoverings.1.2.3Section9,fordeterminingpileyarnmassperunitarea,appliesonlytoback-coated,orfinished,pileyarnfloorcoverings.1.3DeterminationofmassperunitareaofpileyarnfloorcoveringswaspreviouslycontainedwithinTestMethodsD418.Foruserconvenience,SubcommitteeD13.21subdi-videdTestMethodsD418intoseparatestandards,ofwhichthistestmethodisone.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonly(exceptwhereshownin1.4.1)andarenotconsideredstandard.1.4.1ThefollowingsectionsaremeasuredinSIunits:Table1,sections9.8.4.2,9.8.6.3to9.8.6.10,A2.1,A2.2,andA2.3.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.Specificprecautionarystatementsaregivenin9.5.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,G...
