Designation:D642−20StandardTestMethodforDeterminingCompressiveResistanceofShippingContainers,Components,andUnitLoads1ThisstandardisissuedunderthefixeddesignationD642;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoverscompressiontestsonshippingcontainers(forexample,boxesanddrums)orcomponents,orboth.Shippingcontainersmaybetestedwithorwithoutcontents.Theproceduremaybeusedformeasuringtheabilityofthecontainertoresistexternalcompressiveloadsappliedtoitsfaces,todiagonallyoppositeedges,ortocorners.Thistestmethodcoverstestingofmultiplecontainersorunitloads,inadditiontoindividualshippingcontainers,components,materials,orcombinationthereof.1.2Thetestmethodofapplyingloadmaybeusedtocomparethecharacteristicsofagivendesignofcontainerwithastandard,ortocomparethecharacteristicsofcontainersdifferinginconstruction.1.3ThistestmethodisrelatedtoTAPPIT804.ThistestmethodfulfillstherequirementsofInternationalOrganizationforStandardization(ISO)TestMethod12048.TheISOstan-dardsmaynotmeettherequirementsforthistestmethod.1.4Thetestmaybeconductedwiththecontainerloadedwithcontentsandinteriorpackagingincaseswherethecontentssharetheload.1.5Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.7Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedinthe...
