Designation:D7616/D7616M−11(Reapproved2017)StandardTestMethodforDeterminingApparentOverlapSpliceShearStrengthPropertiesofWetLay-UpFiber-ReinforcedPolymerMatrixCompositesUsedforStrengtheningCivilStructures1ThisstandardisissuedunderthefixeddesignationD7616/D7616M;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribestherequirementsforsamplepreparationandtensiletestingofsingle-lapshearsplicesformedwithfiber-reinforcedpolymer(FRP)compositemate-rialscommonlyusedforstrengtheningofstructuresmadeofmaterialssuchasmetals,timber,masonry,andreinforcedconcrete.Theobjectiveofthismethodistodeterminetheapparentshearstrengthofanoverlapsplicejointthroughtheapplicationofafar-fieldtensileforce.Themethodappliestowetlay-upFRPmaterialsystemsfabricatedonsiteorinalaboratorysetting.TheFRPcompositemaybeofeitherunidirectional(0°)orcross-ply(0/90type)reinforcement.Forcross-plylaminates,theconstructionmaybeachievedusingmultiple-layersofunidirectionalfibersateither0or90°,oroneormorelayersofstitchedorwoven0/90fabrics.Thecompos-itematerialformsarelimitedtocontinuousfiberordiscon-tinuousfiber-reinforcedcompositesinwhichthelaminateisbalancedandsymmetricwithrespecttothetestdirection.Themethodisoftenusedtodeterminethelengthoftheoverlapspliceneededtoensurethatatensionfailureoccursinthematerialawayfromthespliceratherthanthespliceconnectionitself.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.2.1Withinthetext,theinch-poundunitsareshowninbrackets.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibil...
