Designation:D7570−09StandardTestMethodforEvaluationofDimensionalStabilityofPileYarnFloorCovering1ThisstandardisissuedunderthefixeddesignationD7570;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthedeterminationofdimen-sionalchangesinthelengthwiseandwidthwisedirectionanddistortionlikelytooccurwhenpilefloorcoveringsareexposedtovariousconditionsofmoistureandheat.Thismethodisapplicabletoallpilefloorcoveringsincludingcarpetmoduleform.1.2Thismethodisapplicabletomachinemadepileyarnfloorcovering.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversiontoSIunitsthatareprovededforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D123TerminologyRelatingtoTextilesD1776PracticeforConditioningandTestingTextilesD5684TerminologyRelatingtoPileFloorCoveringsE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethodsE691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod3.Terminology3.1ForallterminologyrelatingtoD13.21,PileYarnFloorCoverings,refertoTerminologyD5684.3.2Thefollowingtermsarerelevanttothisstandard:backing,carpet,dimensionalstability,cutpileyarnfloorcovering,finishedpileyarnfloorcovering,floorcovering,lengthwisedirection,pileyarnfloorcovering,textilefloorcovering,tuftedfabric,widthwisedirection3.3Fordefinitionsofothertermsrelatedtotextiles,refertoTerminologyD123.4.SummaryofTestMethod4.1Thistestmethoddescribesthedimensionalstabilityofmachinemadepileyarnfloorcoveringswhensubjectedto...
