D4169?09
portovera?oorhazarddescribedasfollows:amodi?ednominal2by6in.boardwithoneedgebeveledfullheightat45°(seeFig.1)shallbeplacedonthecourseinapositionwherebothlifttruckwheelsononesidemustpassoveritduringeachhandlingsequence,andasecondmodi?ednominal2by6in.boardshallbeplacedonthecourseafterthe90°turninsuchapositionthatbothlifttruckwheelsontheoppositesidemustpassoveritduringeachhandlingsequence.10.3.2.2AllMethodsofTruckHandling—ImpactallfoursidesoftheshippingunitinaccordancewithTestMethodD880ProcedureB.Alternately,useTestMethodD4003,MethodBusingashortdurationprogrammer,assumingthecoefficientofrestitutionis0.0andthetotalvelocitychangeisequivalenttothespeci?edimpactvelocity.
AssuranceLevel
IIIIII
ImpactVelocityft/s(m/s)
5.75(1.75)4.0(1.22)3.0(0.91)
10.2.4.2Thesetestsarerequiredonlyonceinanytestschedulesequence.
10.3MechanicalHandling—Thetestlevelsandthetestmethodforthisscheduleofthedistributioncycleareintendedtodeterminetheabilityoflargeandheavyshippingunits,singlepackageswithpalletorskid,andunitizedloadstowithstandthemechanicalhandlinghazardsthatoccurduringloading,unloading,sorting,orstacking.Forlargeshippingcasesandcratesandanysinglepackagewithpalletorskid,differenttestmethodsareusedversusunitloads.Forvarioustypesofunitloads,testmethodsalsovary,dependingonthemethodoftruckhandling:fork,clamp,spade,orpull/pack.10.3.1LargeShippingCasesandCratesandSinglePack-ageswithPalletorSkid—Performthefollowingtestse-quences:
TestMethod—D6179,D880,D4003.Conditioning—SeeSection6.
10.3.1.1ForkLiftTruckHandling—Onerotational?atdropfromeachoppositebaseedgeinaccordancewithMethodCofTestMethodsD6179andonerotationaldroponeachoftwodiagonallyoppositebasecornersinaccordancewithMethodBofTestMethodsD6179.
GrossWeight,lb(kg)0to500(0to226.8)Over500(226.8)
DropHeight,in.(mm)AssuranceLevelIIIIII12(305)9(229)6(152)9(229)6(152)3(076)
10.3.2.3ForkLiftTruckHandling—Onerotational?atdrop
fromeachoppositebaseedgeinaccordancewithMethodCofTestMethodsD6179.
GrossWeight,lb(kg)0to500(0to226.8)Over500(226.8)
DropHeight,in.(mm)AssuranceLevelIIIIII12(305)9(229)6(152)9(229)6(152)3(76)
10.3.1.2CraneHandling—(Conductthistestonlyifcranes
areusedforhandlinginthedistributionprocess.)Onedrop?atonbottomandonedroponbaseedgeinaccordancewithMethodDofTestMethodsD6179.Usethesamedropheightsversusshippingunitweightasin10.3.1.1.
10.3.1.3SideImpactTest—ImpactallfoursidesoftheshippingunitinaccordancewithTestMethodD880,ProcedureB.Alternately,useTestMethodD4003MethodBusingashortdurationprogrammer,assumingthecoefficientofrestitutionis0.0andthetotalvelocitychangeisequivalenttothespeci?edimpactvelocity.
AssuranceLevel
IIIIII
ImpactVelocityft/s(m/s)
5.75(1.75)4.0(1.22)3.0(0.91)
11.ScheduleB—WarehouseStackingandSchedule
C—VehicleStacking:11.1Thetestlevelsandthetestmethodsfortheseschedulesofadistributioncycleareintendedtodeterminetheabilityoftheshippingunittowithstandthecompressiveloadsthatoccurduringwarehousestorageorvehicletransport.Therequiredloadingmustconsidertheeffectsoflengthoftimeinstorage,thealignmentorstackingpatternofthecontainer,variabilityincontainerstrength,moisturecontent,temperature,previoushandlingandtransportation,methodofloadsupport,andvibration.TheminimumrequiredloadsfortypicalshippingunitswhichincludethecombinedeffectsoftheabovefactorsarerecommendedbelowforScheduleB—WarehouseStackingandScheduleC—VehicleStacking(selecttestlevelsforeitherwarehouseorvehiclestackingasde?nedinthedistributioncycle):
TestMethodD642.
Conditioning—73.462°F(2361°C),5062%relativehumidityinaccordancewithPracticeD4332.11.2Usethefollowingtestlevels:
10.3.1.4TipTest—InaccordancewithMethodFofTestMethodsD6179.
10.3.1.5TipoverTest—InaccordancewithMethodGofTestMethodsD6179ifshippingunitfailsTipTestabove.
10.3.2UnitizedLoads—Performthefollowingtestsse-quencesasappropriateforthemethodoftruckhandling:TestMethod—D880,D4003,D6055,D6179.Conditioning—SeeSection6.
10.3.2.1AllMethodsofTruckHandling—Pickup,transportaroundtestcourse,andsetdowninaccordancewithTestMethodsD6055,MethodAforforklift,MethodBforspadelift,MethodCforclamp,andMethodDforpullpack.
AssuranceLevel
IIIIII
Cycles(RoundTrips)
853
(1)Forshipmentsvialess-than-truckload(LTL),simulatetransferterminalhandlingbyperformingforklifttrucktrans-6
FIG.1FloorHazard
D4169?09
LMfJHhlwKF
=========
computedload,lbforN,
shippingdensityfactor,lb/ft3orkg/m3,1lbf/lbor9.8N/kg,
maximumheightofstackintransitvehicle(ifvehiclestackheightisunknown,use108in.(2.7m)),in.orm,seeNote3,
heightofshippingunitorindividualcontainer,in.orm,lengthofshippingunitorindividualcontainer,in.orm,widthofshippingunitorindividualcontainer,in.orm,1728in.3/ft3or1m3/m3,and
afactortoaccountforthecombinedeffectoftheindividualfactorsdescribedabove.
FFactorsAssuranceLevelScheduleScheduleB—WarehouseC—Vehicle
ShippingUnitConstructionIIIIIIIIIIII
1.Corrugated,?berboard,orplasticcontainer8.04.53.010.07.05.0
thatmayormaynothavestress–bearinginteriorpackagingusingthesematerials,andwheretheproductdoesnotsupportanyoftheload.
2.Corrugated,?berboard,orplasticcontainer4.53.02.06.04.53.0
thathasstress-bearinginterior
packagingwithrigidinsertssuchaswood.
3.Containersconstructedofmaterialsother3.02.01.54.03.02.0
thancorrugated,?berboard,orplasticthatarenottemperatureorhumiditysensitiveorwheretheproductsupportstheloaddirectly,forexample,compressionpackage.
4.Iftheproductsupportsaknownportionof
theload,theFfactoriscalculatedinthefollowingmanner:
NOTE3—ThevalueforH,whenunknown,isreducedto54in.(1.4m)from108in.(2.7m)forpackagesunder30lb(13.6kg)and2.0ft3(0.056m3)orlessinsizewhenappliedtoavehiclestackinghazardelementinLTLshipments.
F5P~Fp!1C~F
c!(1)
12.ScheduleD—StackedVibrationandSchedule
E—VehicleVibration:12.1Thetestlevelsandtestmethodsfortheseschedulesofthedistributioncycleareintendedtodeterminetheabilityofshippingunitstowithstandtheverticalvibrationenvironmentduringtransport,andthedynamiccompressionforcesresultingfromvehiclestacking.Thetestlevelsandmethodsaccountforthemagnitude,frequencyrange,duration,anddirectionofvibration.SelectaScheduleD—StackedVibrationorScheduleE—VehicleVibration(nostacking)testasde?nedbythedistributioncycle.Twotestmethodoptionsarepermitted,sineandrandom.Thetwomethodsarenotequivalent;theywillnotnecessarilyproducethesameresults.Therandomtestmethodresultsinabettersimulationofactualtransportvibrationenvironments,andisthepreferredmethodforquali?cation.Thesinetestmethodisoftenusedinconjunctionwiththerandommethodasameansofdeterminingandobservingsystemresonances.
12.2ScheduleD—StackedVibration—Performthetestalongtheverticalaxiswiththeloadinthenormalshippingorientationorwiththepredeterminedbottomorientation(asspeci?edinDC-3)facingdown.Itispermissibletouseaconcentrateddeadloadtosimulateanupperunitloadormixedcommodities.Theconcentratedloadmaybecalculatedfromtheformulasin11.3and11.4,withtheFfactorsetequalto1.Recommendedintensitiesanddurationsfortherandomtestsaregivenin12.4,andthoseforsinetestsaregivenin12.512.3ScheduleE—VehicleVibration—Performthetestforeachpossibleshippingorientation.Recommendedintensitiesanddurationsfortherandomtestsaregivenin12.4,andthoseforsinetestsaregivenin12.5.12.4RandomTestOption:
TestMethodD4728,MethodAorB.AConditioning—SeeSection6.
SpecialInstructions—Thefollowingpowerspectraldensities,asde?nedbytheirmodeoftransport,frequencyandamplitudebreakpoints,andtestdurationsarerecommended.TheTrucktestisrecommendedforDistributionCycles1,3,4,5and6.TheRailtestisrecommendedforDistributionCycles7,8and11.A60minTrucktestfollowedbya120minRailtestisrecommendedforDistributionCycles9and10.A60minTrucktestfollowedbya120minAirtestisrecom-mendedforDistributionCycles12and13.
where:
Fp=factorgivenaboveforcompressionpackage(construc-tionType3),
P=fractionofloadsupportedbyproduct,
Fc=factorgivenaboveforappropriatecontainerconstruc-tion,and
C=fractionofloadsupportedbycontainer.
Ifafullpalletloadistested,Ffactorsmaybereducedby30%.11.3Forwarehousestackingandvehiclestackingmadeupofidenticalshippingunits,loadtheshippingunittothecomputedloadvalue,ascalculatedbelow.Removetheloadwithin3safterreachingthespeci?edvalue.
L5M3J
H2h
3Fh(2)
where:
L=computedload,lbforN,
M=massofoneshippingunitorindividualcontainer,lbor
kg,
J=1lbf/lbor9.8N/kg,
H=maximumheightofstackinstorageortransitvehicle(if
vehiclestackheightisunknown,use108in.(2.7m)),in.orm,
h=heightofshippingunitorindividualcontainer,in.orm,
and
F=afactortoaccountforthecombinedeffectofthe
individualfactorsdescribedabove.11.4ForvehiclestackingmadeupofmixedcommoditiesandshippedinanLTLorsmallpackagedeliveryenvironment,loadtheshippingunittothecomputedloadvalue,ascalculatedbelow.Removetheloadwithin3safterreachingthespeci?edvalue.Iftheaverageshippingdensityfactor(Mf)forthespeci?cdistributionsystemisnotknown,useavalueof103lb/ft(160kg/m3).
L5Mf3J
l3w3hH2h
33FKh(3)
where:
7
Truck:
PowerSpectralDensityLevel,g2/Hz
AssuranceLevelAssuranceLevelAssuranceLevel
IIIIII0.00010.000050.0000250.020.010.0050.020.010.0050.0020.0010.00050.0020.0010.00050.000020.000010.0000050.730.520.37180180180
D4169?09
Assurance
LevelIIIIII
Amplitude(O-Peak),gRailTruck0.250.50.250.50.250.5
Dwell
Time,min15105
Frequency,Hz14164080200
Overall,grmsDuration,minBFrequencyRange,Hz
3to1003to1003to100
13.ScheduleF—LooseLoadVibration:
13.1Thetestlevelsandthetestmethodforthisscheduleofthedistributioncycleareintendedtodeterminetheabilityoftheshippingunittowithstandtherepetitiveshocksoccurringduringtransportationofbulkorlooseloads.Thetestlevelsandtestmethodaccountforamplitude,direction,anddurationoftherepetitiveshocks.
13.2Usethefollowingtestlevels:
TestMethod—D999,MethodA1orA2.Conditioning—SeeSection6.
SpecialInstructions—Dwelltimedistributed50%alongnormalverticalshippingaxisorwiththepredeterminedbottomorientation(asspeci?edinDC-3andDC-13)facingdownandremaining50%evenlyalongallotherpossibleshippingorientations
AssuranceLevel
IIIIII
DwellTime,min
604030
Frequency,Hz125090200
Overall,grmsDuration,minBRail:
PowerSpectralDensityLevel,g2/Hz
AssuranceLevelAssuranceLevelAssuranceLevel
IIIIII0.000020.000010.0000050.0020.0010.00050.0020.0010.00050.00080.00040.00020.000020.000010.0000050.410.290.20180180180Air:
PowerSpectralDensityLevel,g2/Hz
AssuranceLevelAssuranceLevelAssuranceLevel
IIIIII0.00040.00020.00010.020.010.0050.020.010.0050.000020.000010.0000051.491.050.74180180180
Frequency,Hz
212100300
Overall,grmsDuration,minBAIfMethodBisused,thedrivesignalmustbeequalizedforthespeci?cshakerandshippingunitdynamicsperTestMethodD4728,Section8.BForvehiclevibrationtestsinmultipleshippingunitorientations,thetotaldurationshouldbedistributedevenlybetweentheorientationstested.
14.ScheduleG—SimulatedRailSwitching:
14.1Thetestlevelsandtestmethodsforthisscheduleareintendedtodeterminetheabilityoftheshippingunittowithstandtheaccelerationlevelsandcompressiveforcesthatmightoccurduringrailswitchingoperations.
TestMethodD4003,TestMethodAorTestMethodD5277.Conditioning—SeeSection6.
SpecialInstructions—Threeimpactsshallbeperformed.Forrailcarswithstandarddraftgear,shockdurationsof40610msshallbeused,asmeasuredonthe?oorofthecarriage.Forrailcarswithlong–traveldraftgear,shockdurationsof300650msshallbeused.
NotethatTestMethodD5277isusedforstandarddraftgearonly.
Forpurposesofthistest,thecoefficientofrestitutionshallbeconsidered0.0,andthetotalvelocitychangeshallbeequiva-lenttothespeci?edimpactvelocity.Containerimpactsurfaceshouldbethesameasoccursinactualshipment.Ifmorethanoneorientationispossible,impactthatsurfacewhichisknowntobemostsensitivetodamage.
RefertoTestMethodsD4003orD5277forspeci?cinstruc-tionsonhowtoinstrumentandconductthetest.
14.2Procedure—Loadshippingunitoncarriageagainstbulkhead.Totalbackloadshallbeequivalenttoaminimumof3ftlineal(0.9m)ofcargo.Thepackageusedasbackloadincontactwiththetestpackagemustbeidenticaltothetestpackage.
14.3TestLevels—Allowthecarriagetoimpactacushionedbarrierinaccordancewiththefollowingassurancelevels:
8
12.4.1Ifmoredetailedinformationisavailableonthetransportvibrationenvironmentorthedamagehistoryoftheshippingunit,itisrecommendedthattheaboveprocedurebemodi?edtousesuchinformation.Theaveragetesttimerequiredtoreproduceshippingdamageisdependentonthemodeoffailure,aswellasthevibrationlevel.Someover-stressandabrasionmodesoffailurewilloccurinmuchlessthan3h,whilesomefatiguefailuremodesmayrequiremorethan3htooccur.Testdurationsrangingfrom30minto6hhavebeenusedsuccessfullyfordifferentproductorpackagetypes.Therecommended180-mindurationisreasonableintheabsenceofspeci?cshippingortestingexperience.
12.5SineTestOption:
TestMethodsD999,MethodBorC.Conditioning—SeeSection6.
SpecialInstructions—Dwelltimeisforeachnotedproductorpackageresonanceuptofourdiscreteresonances.Ifmorethanfourresonancesarenoted,testatthefourfrequencieswherethegreatestresponseisnoted.Infrequencysweepsitisadvisabletoconsiderthefrequencyrangesnormallyencoun-teredinthetypeoftransportationbeingconsidered.Theresonantfrequency(ies)mayshiftduringtestduetochangingcharacteristicsofthecontainersystem.Itissuggestedthatthedwellfrequencybevariedslightlyduringthetesttodetectanyshiftandtocontinuetestingatthefrequencyofmaximumresponse.Usethefollowingtestlevels:
ImpactVelocitymph(m/s)8(3.58)6(2.68)6(2.68)4(1.79)6(2.68)4(1.79)
D4169?09
NumberofImpacts
212112
AssuranceLevel
I
IIIII
14.4ProcedureModi?cation—Ifmoredetailedinformationisavailableonbackloadorshockcharacteristicsitisrecom-mendedthattheaboveprocedurebemodi?edtousesuchinformation.Thespeci?edbackloadandshockcharacteristicareintendedtosimulatetheconditionsthatoccuronrailcarsequippedwithstandardtypedraftgear.15.ScheduleH—EnvironmentalHazard:
15.1Thisscheduleisintendedtoprovidefortheanticipatedandoftenrapidchangesinambientconditionsassociatedwiththemilitarydistributionofmaterial.Thisscheduledeterminesthesusceptibilityofthetotalpacktotheeffectsofmoisture,temperatureshock,orthecombinedeffectsofcyclicexposure.Theresultofconditioningmayinvolvetheobservation/measurementofmoistureorwaterwithinpacks,evidenceofcorrosiononpackageditems,orcompromiseoftheenclosure’sstructuralintegritysuchthatphysicalprotectioncannolongerbeensured.TestingshallbeinaccordancewithTestMethodD951,wheresprayintensitiesof460.5in./h(100610mm/h)areusedforAssuranceLevelIand260.5in./h(50610mm/h)forLevelII.
15.2Testlevelsshallbeasfollows:
AssuranceLevelTemperature,°F(°C)WaterSprayDuration,h
I160±5(71±2)16
55±5(13±2)X2–10±5(–23±2)2160±5(71±2)X255±5(13±2)X232±5(0±2)16160±5(71±2)455±5(13±2)X2–65±5(–54±2)2160±5(71±2)1655±5(13±2)X2–65±5(–54±2)240±5(4±2)3160±5(71±2)16
II160±5(71±2)14
55±5(13±2)X2160±5(71±2)432±5(0±2)255±5(13±2)X2Thecyclicsequenceshallberepeatedonthree
consecutivedays.Attheendofthethreedayperiod,theunitpackbeingtestedshallthensetovernight160±5(71±2)16
IIINotapplicable
groundovermountainpasses.Thistestshallbeconductedin
accordancewithlevelsdescribedinTestMethodD6653.Thistestshouldbeincludedforproductsandpackagesthatcouldbesensitivetoalowpressureenvironment,forexample,sealed?exiblenon-porouspackages,liquidcontainers,orporouspackagesthatmaybepackedinsuchamannerastobeadverselyaffectedbylowpressureenvironments.ThistestmaybedeletedfromDC12and13whenshippingunitscontainprimarypackagesthathaveaporousmaterial(porouspackag-ingmaterialisde?nedinTerminologyF1327).
16.2Testthepackagestotheexpectedaltitudelevelsencounteredduringshipment.Ifthesearenotknownprecisely,uselevelsrecommendedbyTestMethodD6653ofpressureequivalentto4267m(14000ft.)foraperiodof60min.Thetestdurationandpressurelevelsmaybemodi?edbasedonknowledgeoftheshippingenvironment,productvalue,desireddamagelevelacceptances,orothercriteriaasdescribedinTestMethodD6653.
17.ScheduleJ—ConcentratedImpact
17.1Thisscheduleprovidesasimulationofanticipatedlowlevelconcentratedimpactsasreceivedbypackagesduringsortingoperationsandintransit.Thetestisonlyapplicabletolightweightsinglewallcorrugatedshippingcontainers(under275Burstor44ECT)andplastic?lmwrappedpackagesandunitizedloads.TesttheappropriatepackagesorunitloadsaccordingtoTestMethodD6344.
17.2Theimpactenergyforthistestshallbe4.0ft-lbf(5.4J)asimposedbythecylindricalmassfallingaverticaldropdistanceof32in.(0.8m).18.Report
18.1Reportfullyallthestepstaken.Ataminimum,thereportshouldinclude:
18.1.1Referencetothispractice,
18.1.2Descriptionofproductandshippingunit,includingorientationoftheproductwithintheshippingunit,18.1.3Distributioncycle(DC)andtestplan,18.1.4Assurancelevelsandrationale,18.1.5Numberofsamplestested,18.1.6Conditioningused,18.1.7Acceptancecriteria,
18.1.8Vibrationoptionused,randomorsine,
18.1.9Randomvibrationpowerspectraldensityplot,ifused,
18.1.10Pressurelevelsanddurationforhighaltitudeexpo-sure,ifused,
18.1.11Typeoflifttruckhandlingtestsused,ifany,18.1.12Variationfromrecommendedprocedures,and18.1.13Conditionofspecimensaftertest.
18.2GovernmentShipments—Inadditionto18.1.2-18.1.13,thecompletereportincludes:
18.2.1Party,otherthancontractor,performingtesting,18.2.2Testingfacilityused,otherthancontractor’s,
18.2.3Governmentrepresentativewitnessingtesting,and18.2.4Whenenvironmentalhazardisperformedforotherthansmallestcompleteshippingunit(see15.4).
9
15.3Durationtimeshallbemeasuredstartingthemomentatwhichtemperaturesettingischangedtonextcondition.15.4Whenspeci?edinthecontract,thistestshouldbeperformedaspartofthecompletedistributioncycleforthesmallestcompleteshippingunit,aspartofthecontract.16.ScheduleI—LowPressure(HighAltitude)Hazard16.1Thisscheduleisintendedtoprovidefortheanticipatedreductioninpressurewhenpackagedproductsaretransportedviacertainmodesoftransport,suchasfeederaircraftorby
D4169?09
20.Keywords
20.1compressiontest;distributioncycle;distributionenvi-ronment;droptest;mechanicalhandling;package;packaging;randomvibration;shippingcontainer;shippingunit;vacuum;vibration
19.PrecisionandBias
19.1Theprecisionandbiasofthispracticearedependentonthoseofthevarioustestmethodsused,andcannotbeexpresslydetermined.
ANNEX
(MandatoryInformation)
A1.DISTRIBUTIONCYCLEDC-18FORNON-COMMERCIALGOVERNMENTSHIPMENTSPERMIL-STD-2073–1
A1.1PerformanceTestScheduleSequenceA1.1
12345678
Handling(A1.2)
WarehouseorVehicleStacking(A1.3)Handling(A1.2)
LowPressureHazard(A1.4)EnvironmentalHazard(A1.5)LooseLoadVibration(A1.6)VehicleVibration(A1.7)Handling(A1.2)
A1.2Handling—ManualandMechanical
A1.2.1ManualHandling—Thistestscheduleappliestosmallshippingunits.Descriptionofthisscheduleisinaccor-dancewith10.2.3,exceptthattheheightofthelastimpactofthelastmanualhandlingsequenceisthesameasallotherimpacts.Usethe?rstsequenceimpactorientationsforthethirdhandlingschedule.Testsmallshippingunitsusingthefollow-ingtestlevels:
ShippingWeight,lb(kg)0to30(0to13.6)
over30to75(over13.6to34)over75to150(over34to68)
DropHeight,in.(mm)AssuranceLevel
III30(762)24(610)24(610)18(457)18(457)15(381)
A1.2.2MechanicalHandling:
A1.2.2.1Forlargeshippingunits,thisscheduleisintendedtoprovideanumberoftestingvariationsdescribingspeci?cmechanicalhandlinghazardsthatoccuringovernmentdistri-butionforshippingcases,crates,unitizedloads,andcylindricalcontainers.Requiredtestsforrectangularshippingunitsin-clude:tip/tipover;forklifttrucktransport;rotationaldrops,
bothedgewiseandcornerwise;andlateralimpacts.ForAssur-anceLevelI,shippingcasesandcratesandunitizedloadsshallalsobesubjectedtoslinghandling.Forcylindricalshippingunits,onlyrotationaledgewisedroptestsshallapply.TableA1.1shallbeusedasaguideindeterminingboththerequiredtestsandthesequencetobefollowed.A1.2.2.2Speci?ctestsrequired:
(1)ShippingCases,Crates,andUnitizedLoads–Tip/Tipover—ShippingcasesandcratesshallbesubjectedtobothtipandtipovertestsforAssuranceLevelI,followingtherequirementsofTestMethodD6179,MethodsFandG.Forunitizedloads,onlythetiptestwillberequired.ThetiptestshallbeperformedforAssuranceLevelIIforallrectangularshippingunits.Tip/tipoverrequirementsshallonlyberequiredduringthe?rsthandlingsequenceofDC-18.Thetiptestisusefulfordeterminingacceptableshippingunitdimensionandcenterofgravity.Fortipover,oneimpactisrequiredoneachoftwooppositesides,asdeterminedbytheinitialsidehavingthelowestheight–to–widthratio.
(2)ShippingCases,Crates,andUnitizedLoads—ForkLiftTruckTransport—Pickup,transportaroundtestcourseasde?nedinTestMethodsD6055,MethodA,foratotaloftwocycles(roundtrips)inthecaseofAssuranceLevelI,andonecycleforAssuranceLevelII.Withintheminimum100ft(30.5m)obstaclezone,parallelpairsof1by6in.(25by150mm)boards,ofalengthtoextendcompletelyacrosstheaisleandspaced54in.(1.37m)apart,arelaid?atatintervalsof30,60,
TABLEA1.1MechanicalHandlingforDC-18,RequiredTestsandSequence
LargeShippingUnit
ShippingCases&CratesUnitizedLoads
AssuranceLevelAIIIIIIIII
TipBTipoverBForkliftTransport2cycles1cycle2cycles1cycle
--EdgeXXXXXX
RotationalDrops
CornerXXXX--LateralImpactsCX-X---SlingHandlingDX-X---
XXXX--
X-----
Cylindrical
ABAsreferencedin3.2.2,AssuranceLevelsIandIIequatetomilitarylevelsofprotectionAandB,respectively.Testtobeperformedonlyduringthe?rsthandlingsequenceofDC-18.CTesttobeperformedonlyduringthesecondhandlingsequenceofDC-18.DTesttobeperformedonlyduringthethirdhandlingsequenceofDC-18.
10