1、Designation:E251811Standard Specification forCargo Bed Cover,Type IV(M923,5 Ton Cargo Truck/M1083,5 Ton Medium Tactical Vehicle(MTV)/M1082,5 Ton MTVTrailer)1This standard is issued under the fixed designation E2518;the number immediately following the designation indicates the year oforiginal adopti
2、on or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the general requirements forthe Type IV Cargo Bed Cover
3、(CBC).The Type IV CBC is aremovable general purpose rigid wall enclosure that is mountedto the following model 5 ton cargo trucks:(1)the M923Medium Tactical Vehicle(MTV)and(2)the M1083 MTV.Italso can be mounted on the M1095 5 Ton MTV Trailer.TheCBC provides environmental protection and security for
4、mis-sion equipment and items of general transport.1.2 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.1.3 The following safety hazards caveat pertains only to thetest required portion,Section 4,of this specification:Thiss
5、tandard does not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory require-ments prior to use.2.Referenced Documents2.1 AS
6、TM Standards:2E1925 Specification for Engineering and Design Criteria forRigid Wall Relocatable StructuresF501 Test Method for Aerospace Materials Response toFlame,with Vertical Test Specimen(for Aerospace Ve-hicles Standard Conditions)(Withdrawn 1998)32.2 Federal Standards:4FED-STD-595 Colors Used
7、in Government Procurement2.3 Military Standards:4MIL-STD-209 Slinging and Tiedown Provisions for Liftingand Tying Down Military EquipmentMIL-STD-810 Environmental Test Methods and Engineer-ing GuidelinesMIL-STD-1366 Transportability CriteriaMIL-STD-1472 Design Criteria:Human EngineeringMIL-DTL-53039
8、 Coating,Aliphatic Polyurethane,SingleComponent,Chemical Agent ResistantMIL-DTL-53072 ChemicalAgentResistantCoating(CARC)SystemApplication Procedures and Quality Con-trol Inspection2.4 Military Handbooks:4MIL-HDBK-759 Human Engineering DesignMIL-HDBK-1791 Designing for Internal Aerial Delivery inFix
9、ed Winged Aircraft2.5 OSHA Documents:5Title 29 CFR 19102.6 ACGIH Documents:6ACGIH Threshold Limit Values3.General Requirements3.1 First ArticleWhen specified(see 6.2),a sample shallbe subjected to first article inspection in accordance with 4.1.1.A first article is defined as a pre-production or an
10、initialproduction sample consisting of one or more of each type ofcompleted CBC.3.2 ConformanceItems furnished under this specificationshall be subjected to conformance inspection in accordancewith 4.1.2.1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings a
11、nd is the direct responsibility of Subcommittee E06.53on Materials and Processes for Durable Rigidwall Relocatable Structures.Current edition approved Sept.1,2011.Published October 2011.Originallyapproved in 2006.Last previous edition approved in 2006 as E2518 06.DOI:10.1520/E2518-11.2For referenced
12、 ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.o
13、rg.4Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/www.dodssp.daps.mil.5Available from Occupational Safety and Health Administration(OSHA),200Constitution Ave.,NW,Washington,DC 20210,http:/www.osha.gov.6Available from America
14、n Conference of Governmental Industrial Hygienists,Inc.(ACGIH),1330 Kemper Meadow Dr.,Suite 600,Cincinnati,OH 45240,http:/www.acgih.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.3 Operating RequirementsUnless otherwise specified,t
15、he Type IV CBC shall meet the following operating require-ments in both the height extended and height retracted con-figurations.3.3.1 ConfigurationsThe Type IV CBC shall have twoconfigurations,height extended and height retracted.Theheight extended configuration is the normal operating configu-rati
16、on for the CBC and provides for maximum usable volume.The height retracted configuration provides less usable volumebut is capable of being loaded on the C-130 and C-141 MilitaryAirlift Command(MAC)fixed wing aircraft.Unless otherwisespecified,the CBC shall meet all the requirements of thisspecification sheet in both the height extended and heightretracted configurations.3.3.2 Height Adjustment DeviceIn both its payloaded(see3.3.8)and non-payloaded configurations the Type IV CBCshall be capable
