Designation:E1975−15StandardSpecificationforShelter,Electrical,EquipmentS-280/G1ThisstandardisissuedunderthefixeddesignationE1975;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ThisstandardhasbeenapprovedforusebyagenciesoftheU.S.DepartmentofDefense.1.Scope1.1Thisspecificationcoversonetypeoflightweightfieldandmobileshelterdesignedfortransportbycargotruck,fixedorrotarywingedaircraft,byrail,andship,asShelter,ElectricalEquipmentS-280/G(see15.5).1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thefollowingsafetyhazardscaveatrefersonlytothetestmethodsdescribedinthisspecification.Thisstandarddoesnotpurporttoaddressthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthestandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C273/C273MTestMethodforShearPropertiesofSandwichCoreMaterialsD1621TestMethodforCompressivePropertiesofRigidCellularPlasticsD1622/D1622MTestMethodforApparentDensityofRigidCellularPlasticsD2842TestMethodforWaterAbsorptionofRigidCellularPlasticsE631TerminologyofBuildingConstructionsE864PracticeforSurfacePreparationofAluminumAlloystoBeAdhesivelyBondedinHoneycombShelterPanelsE1730SpecificationforRigidFoamforUseinStructuralSandwichPanelCoresE1749TerminologyRelatingtoRigidWallRelocatableSheltersE1773PracticeforSealingRigidWallTacticalShelterswithPolysulfideBasedSealantsE1794SpecificationforAdhesiveforBondingFoamCoredSandwichPanels(200°FElevatedHumidityService),TypeIIPanelsE1801PracticeforAdhesiveBondingofAluminumFacingsinFoamandBeamTypeSheltersE1851TestMethodforElectromagneticShieldingEffec-ti...