Designation:F386−11StandardTestMethodforThicknessofResilientFlooringMaterialsHavingFlatSurfaces1ThisstandardisissuedunderthefixeddesignationF386;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheDepartmentofDefense.1.Scope1.1Thistestmethodcoversthedeterminationofthicknessofresilientnontextilefloorcoveringsincludingtileandsheethavingflatsurfaces.Thistestmethodshouldnotbeusedonmaterialshavingafoamedlayer.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethodE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethods3.SignificanceandUse3.1Measurementofthethicknessoftheproductmayberequiredforqualitycontrolpurposesortoensurecompliancewithapplicablespecifications.4.Apparatus4.1Theapparatusshallconsistofacomparatorstandhavingaflatanvilbaseatleast6in.(15cm)square,equippedwithathicknessgagegraduatedto0.001in.(0.02mm).Thegageshallbeequippedwithaflatpresserfoot0.25060.01in.(6.3560.5mm)indiameter.Thefootshallexertaforceof1660.1ozf(4.4560.03N)maximum.4.1.1Thecontactsurfacesoftheanvilandthethicknessgagepresserfootshallbeparallelwithin0.0001in.(0.003mm).4.1.2Beforeplacingthemicrometerintooperation,thesurfacesshallbecleanedsothegagezerosproperly.5.TestSpecimens5.1Thetestspecimenshallbeaminimumofonetileora12by12-in.(300by300-mm)pieceofsheetfl...
