Designation:C1542/C1542M−16aStandardTestMethodforMeasuringLengthofConcreteCores1ThisstandardisissuedunderthefixeddesignationC1542/C1542M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodisusedtodeterminethelengthofacoredrilledfromconcrete.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C42/C42MTestMethodforObtainingandTestingDrilledCoresandSawedBeamsofConcreteC125TerminologyRelatingtoConcreteandConcreteAg-gregatesC174/C174MTestMethodforMeasuringThicknessofCon-creteElementsUsingDrilledConcreteCoresC670PracticeforPreparingPrecisionandBiasStatementsforTestMethodsforConstructionMaterialsC1604/C1604MTestMethodforObtainingandTestingDrilledCoresofShotcrete3.Terminology3.1Definitions:3.1.1Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyC125.4.SignificanceandUse4.1Thistestmethodprovidestwoproceduresfordetermin-ingthelengthofacoreobtainedinaccordancewitheitherTestMethodC42/C42MorTestMethodC1604/C1604M.Thislengthisusedinconjunctionwithconditionsurveys,densityandvoidsanalysis,andotherapplications.4.2Thisproceduredoesnotintendtoincludeinthelengthmeasurementadheredparticlesnotpartoftheconcretemix-ture.4.3TestMethodC174/C174Malsodeterminesthelengthofconcretecoresusingadifferentmeasuringapparatusandprocedure.NOTE1—TestMethodC174/C174Musesanapparatusthatestablishestwopara...
