1、Designation: E 2518 06Standard 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 E 2518; the number immediately following the designation indicates the year oforig
2、inal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the general requirements forthe Type
3、 IV Cargo Bed Cover (CBC). The Type IV Cargo BedCover is a removable general purpose rigid enclosure for thecargo bed of the M923, 5 Ton Cargo Truck/M1083, 5 TonMedium Tactical Vehicle (MTV)/M1095, 5 Ton MTV Trailer.The CBC provides environmental protection and security formission equipment and item
4、s of general transport.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parenthesis are forinformation only.1.3 The following safety hazards caveat pertains only to thetest required portion, Section 4, of this specification: Thisstandard does not purpo
5、rt 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 ASTM Standards:2E 192
6、5 Specification for Engineering and Design Criteriafor Rigid Wall Relocatable StructuresF 501 Test Method for Aerospace Materials Response toFlame, with Vertical Test Specimen (For Aerospace Ve-hicles Standard Conditions)32.2 Federal Standard:4FED-STD-595 Colors Used in Government Procurement2.3 Mil
7、itary 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-DTL-53039 Coating, Aliphatic Polyurethane, SingleComponent, Chemical Agent ResistantMIL
8、-DTL-53072 Chemical Agent Resistant Coating(CARC) SystemApplication Procedures and Quality Con-trol Inspection2.4 Military Handbook:MIL-HDBK-1791 Designing for Internal Aerial Delivery inFixed Winged Aircraft42.5 OSHA Documents:5Occupational Safety and Health Act (OSHA), Title 29 CFR19102.6 The Amer
9、ican Conference of Governmental IndustrialHygienists (ACGIH):ACGIH Threshold Limit Values63. 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 initialprod
10、uction 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 4.1.2.3.3 Operating RequirementsUnless otherwise specified,the Type IV CBC shall meet the following operating req
11、uire-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-ration for the CBC and provides for maximum usable volu
12、me.1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.53on Materials and Processes for Durable Rigid Wall Relocatable Structures.Current edition approved Oct. 1, 2006. Published October 2006.2For referen
13、ced 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.3Withdrawn.4Available from Standardization Documents Order Desk, DODSSP,
14、Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, 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 American Conference of Governmental Industrial Hygienis
15、ts,Inc. (ACGIH), 1330 Kemper Meadow Dr., Suite 600, Cincinnati, OH 45240,http:/www.acgih.org.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.The height retracted configuration provides less usable volumebut is capable of being loaded
16、 on the C-130, and C-141Military Airlift Command (MAC) fixed wing aircraft. Unlessotherwise specified, the CBC shall meet all the requirements ofthis specification sheet in both the height extended and heightretracted configurations.3.3.2 Height Adjustment DeviceIn both its payloaded (see3.3.8) and
17、non-payloaded configurations the Type IV CBCshall be capable of being manually extended from its retractedconfiguration and vise versa by 2 soldiers in 20 minutes usingonly the tools of the Basic Issue Items (BII) and theAdditionalAuthorization List (AAL) as described in the carriers Opera-tors Manu
18、al, and tools supplied with the CBC. Any hardwareor special tools required for extending/retracting the CBC shallbe provided as part of the CBC. Additional materials handlingequipment shall not be required. The CBC shall be capable ofmultiple extension/retraction cycles, in accordance with itsmanual
19、, without damage or degradation to either the CBC, itscarrier, or its height adjustment devise.3.3.3 CBC Service Life, Reliability and MaintainabilityThe service life for the CBC shall be at least 15 years. Themean time to repair at the organizational and intermediate levelshall not exceed 4 hours a
20、t the 90th percentile. Gaskets, seals,flaps and other materials shall be fixed to the CBC and shall bereplaceable.3.3.4 Personnel Hazards3.3.4.1 MechanicalThe CBC shall conform to regulatoryand consensus design safety standards, unless military appli-cations require more stringent limits, and reflec
21、t applicablesystem and personnel safety factors. The CBC shall providepersonnel maximum access and safety while installing, oper-ating, and maintaining the equipment.3.3.4.2 Edge RoundingAll exposed edges and cornersshall be rounded. Sharp edges and corners that can present apersonnel safety hazard
22、or caused equipment damage duringoperation and maintenance shall be rounded or suitably pro-tected.3.3.5 Toxicity3.3.5.1 MaterialsCertain chemicals have been identifiedin the Occupational Safety and Health Act (OSHA), as cancer-producing substances (carcinogens). Materials used in the CBCshall not c
23、ontain these chemicals. Consideration of the humantoxicity of a substance should be given prior to materialselection.3.3.5.2 Gases or VaporsThe materials, as installed in theequipment and under service conditions specified in the equip-ment specification, shall not liberate noxious odors, toxic orco
24、rrosive gases, or vapors that would be detrimental to thehealth of personnel.3.3.6 VentsThe CBC shall include 2 vents for fresh airventilation.The vents shall be located to facilitate fresh air flowthrough the cargo area. The vents shall prevent intrusion ofdriven rain and have provisions for blacko
25、ut. Vents shall becapable of providing ventilation when the vehicle is bothstationary and on the move. Vents requiring operation shall becapable of being operated manually. The interior surface of thedoor shall have a warning in at least 112 2 inch high letterscontrasting the color of the door. The
26、warning shall say“WarningSuffocation hazard, door must remain open whileoccupied.” This requirement shall apply to the Type IV CBCsin the height extended configuration only.3.3.7 Roof LoadsThe CBC roof shall be capable ofsupporting, without structural damage, degradation or perma-nent deformation: (
27、1) a uniformly distributed load of 40 lbs/ft2over the entire surface and (2) a concentrated load of 660 lbsovera1ft3 2 ft area applied anywhere on the roof.3.3.8 Interior Payload ProvisionsThe CBC shall be ca-pable of accepting threaded fasteners such as rivnuts andinserts for mounting equipment to
28、the interior of the CBC. TheType IV CBC and its Interior Payload Provisions shall becapable of supporting at least 1100 pounds of payload duringits stationary, rail transport, ground mobility and crane liftingoperation modes without damage or degradation to either theCBC or its interior payload prov
29、isions. The payload shall beattached to the interior surfaces using interior payload provi-sions and shall be distributed as follows: 200 pounds mountedto each of the four wall surfaces, or 400 pounds mounted toeach of the two side wall surfaces, and 300 pounds mounted tothe ceiling.3.3.9 Personnel
30、Door Loads3.3.9.1 Personnel Door StructureThe personnel door, in-cluding its frame(s) and hardware, shall be capable of support-ing a 200 lb static load without damage or degradation to eitherthe CBC or its personnel door, frame(s) and hardware.The loadshall be applied parallel to the hinge line, al
31、ong the door edgeopposite the hinge, with the personnel door open to 90 degrees.The personnel door shall operate freely after application of theload.3.3.9.2 Door StopThe personnel door, including itsframe(s) and hardware, shall withstand a wind gust of 60 mphin any direction when the door is secured
32、 by its door stop.3.3.10 Surface Impact ResistanceThe exterior surface ofthe CBCs roof shall be capable of withstanding a blow from a30 lb steel cylinder, 3 inches in diameter with a hemisphericalend, dropped from a height of 30 inches, without structuraldegradation.All other exterior wall surfaces
33、shall be capable ofwithstanding a blow from the same steel cylinder, droppedfrom a height of 16 inches, without structural degradation.3.3.11 Tailgate OperationThe CBC, when mounted on itscarrier, shall not inhibit operation of the carriers tailgate.3.3.12 BlackoutThe CBC/carrier combination, with t
34、hepersonnel door and ports closed, shall not permit a light sourcefrom within to emit detectable amounts of light. This require-ment shall apply to the Type IV CBCs in the height extendedconfiguration only.3.4 Support and Ownership RequirementsUnless other-wise specified, the Type IV CBC shall meet
35、the followingsupport and ownership requirements in both the height ex-tended and height retracted configurations.3.4.1 WeightThe Type IV CBC, including its heightadjustment devise, but not its hardware/adapter kit, shall weighno more than 800 pounds.3.4.2 Personnel DoorThe Type IV CBC shall beequipp
36、ed with a vertically hinged single personnel door,centrally located in the rear wall. The door opening shall be aminimum of 48.00 inches wide by 60.00 inches high in theE2518062height extended configuration and shall be a minimum of 48.00inches wide by 24.00 inches high in its height retractedconfig
37、uration. The personnel door shall swing to the outside.The personnel doors fully opened position shall be at least 135degrees from its closed position. A door stop, for securing thepersonnel door in its fully opened position, shall be provided.In its closed position the personnel door shall prevent
38、theintrusion of driven rain and dust and shall provide blackoutprotection.3.4.2.1 Door HandleThe personnel door shall beequipped with a door handle that provides positive closure.From either side, the door handle shall be capable of beingmoved to its opened or closed position with a maximum forceof
39、30 lbs applied to the door handle. The personnel door shallbe capable of being padlocked from the outside securing theCBC from the exterior.3.4.2.2 Secondary ExitAsecondary exit shall be providedwithin the personnel door. The secondary exit opening shall bea minimum of 35.00 inches wide by 30.00 inc
40、hes high. Thesecondary exit shall be capable of being opened with amaximum force of 30 lbs applied to the release mechanismfrom inside of the CBC with: (1) the tailgate closed and thepersonnel door locked (2) the tailgate closed and the personneldoor unlocked and (3) the tailgate open and the person
41、nel doorlocked. With the personnel door locked, the secondary exitshall not be capable of being opened from outside the CBC.The secondary exit shall provide unobstructed egress formilitary personnel. This requirement shall apply to the Type IVCBC in the height extended configuration only.3.4.3 Ladde
42、rA ladder shall be provided to allow militarypersonnel to safely enter and exit the CBC/carrier combinationutilizing the CBCs Personnel Door. The ladder shall becapable of supporting at least 400 lbs applied to any individualstep without damage or degradation to either the CBC, carrieror ladder. The
43、 CBC shall have a stowage location for the laddercapable of securely retaining the ladder in all transportationmodes without impeding any operations of the CBC or itscarrier. The M1083 and M1095 carriers applicable to the TypeIV CBC are equipped with a ladder.3.4.4 Roof Access Handholds/FootholdsRoo
44、f accesshandholds/footholds shall be provided for safe access from theground to and descend from the roof when the CBC is mountedon its carrier. The roof access handholds/footholds shall eitherbe built into the CBC or attached to the exterior. The roofaccess handholds/footholds shall be designed suc
45、h that theCBC/carrier combination does not: (1) exceed the legal high-way size limitations imposed by states and foreign countriesand (2) limit any other modes of transportation (e.g., rail, air,ship). The roof access handholds/footholds shall be designedfor the 5th percentile female through the 95t
46、h percentile malemilitary personnel. Each roof access handhold/footholds shallbe capable of supporting 400 lbs without damage or degrada-tion to either the CBC or the roof access step/handhold.3.4.5 Power and Signal Entry PortsTwo ports shall beprovided in the side walls as forward as practicable to
47、 permitthe pass through of power and signal lines into the CBCenclosed area when the CBC is in its height extended configu-ration. One port shall be located on the drivers side and theother port shall be located on the passengers side. Each portshall be a minimum of four inches in diameter and not a
48、llowthe intrusion of driven rain and dust into the CBC and haveprovisions for blackout. The power and signal access portsshall have provisions for blackout.3.4.6 TransportabilityThe CBC/carrier combination shallbe capable of obtaining transportability approval from theMilitary Traffic Management Com
49、mand transportability Engi-neering Agency (MTMCTEA) based on the requirements fortransport in the following modes:3.4.6.1 RailThe CBC/carrier combination with payloadshall: (1) meet the Gabarit International de Chargement (GIC)equipment gauge envelope as defined in interface standardMIL-STD-1366, and (2) be capable of withstanding multiplerail impacts without damage or degradation to either the CBCor its carrier and without damage to the tiedown cables, orblocking or bracing.3.4.6.2 Fixed WingThe CBC/carrier combination shall betransportable in
