Designation:D5780−10StandardTestMethodsforIndividualPilesinPermafrostUnderStaticAxialCompressiveLoad1ThisstandardisissuedunderthefixeddesignationD5780;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThesetestmethodshavebeenpreparedtocovermethodsofaxialloadtestingofpilesinpermafrost.Theprovisionspermittheintroductionofmoredetailedrequirementsandprocedureswhenrequiredtosatisfytheobjectivesofthetestprogram.Theprocedureshereinproducearelationshipbetweenappliedloadandpilesettlementforconditionsofgroundtemperatureatthetimeoftest.Theresultsmaybeinterpretedtoestablishlong-termloadcapacityofpilesinpermafrost.1.Scope*1.1Thesetestmethodscoverproceduresfortestingindi-vidualverticalpilestodetermineresponseofthepiletostaticcompressiveloadappliedaxiallytothepile.Thesetestmethodsareapplicabletoalldeepfoundationunitsinperma-frostthatfunctioninamannersimilartopilesregardlessoftheirmethodofinstallation.Thisstandardisdividedintothefollowingsections:SectionReferencedDocuments2Terminology3SignificanceandUse4InstallationofTestPiles5ApparatusforApplyingLoads6ApparatusforMeasuringMovements7SafetyRequirements8LoadingProcedures9StandardTestProcedures10ProceduresforMeasuringPileMovements11Report12PrecisionandBias13Keywords14NOTE1—Apparatusandproceduresdesignated“optional”aretoberequiredonlywhenincludedintheprojectspecificationsorifnotspecified,maybeusedonlywiththeapprovaloftheengineerresponsibleforthefoundationdesign.Theword“shall”indicatesamandatoryprovisionand“should”indicatesarecommendedoradvisoryprovision.Imperativesentencesindicatemandatoryprovisions.Notes,illustrations,andappendixesincludedhereinareexplanatoryoradvisory.NOTE2—Thisstandarddoesnotincludetheinterpretationoftestresultsortheapplicationoftestresultstofoundationdesign.SeeAppendixX1forcommentsregardi...
