Designation:C174/C174M−17AmericanAssociationStateHighwayandTransportationOfficialsStandardAASHTONo.:T148StandardTestMethodforMeasuringThicknessofConcreteElementsUsingDrilledConcreteCores1ThisstandardisissuedunderthefixeddesignationC174/C174M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope*1.1Thistestmethodcoversthedeterminationofthethick-nessofaconcretepavement,slab,orstructuralelementusingdrillingcores.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C42/C42MTestMethodforObtainingandTestingDrilledCoresandSawedBeamsofConcreteC125TerminologyRelatingtoConcreteandConcreteAg-gregatesC670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterials2.2AASHTOStandards:3AASHTOT148MethodofTestforMeasuringLengthofDrilledConcreteCores3.Terminology3.1Definitions:3.1.1Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyC125.4.SignificanceandUse4.1Thistestmethodisusedtodeterminethecomplianceofconcreteconstructionwithd...
