ASTM E1974-01a
(Specification)Standard Specification for Shelter, Electrical, Equipment S-250/G
Standard Specification for Shelter, Electrical, Equipment S-250/G
SCOPE
1.1 This specification covers one type of lightweight field and mobile shelter designed for transport by cargo truck, fixed or rotary winged aircraft, by rail, and ship, designated as Shelter, Electric Equipment S-250/G.
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 The following safety hazards caveat refers only to the test methods portion of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: E 1974 – 01a
Standard Specification for
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Shelter, Electrical, Equipment S-250/G
This standard is issued under the fixed designation E 1974; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope E 1800 SpecificationforAdhesiveforBondingFoamCored
SandwichPanels(160°FElevatedHumidityService),Type
1.1 This specification covers one type of lightweight field
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1 Panels
and mobile shelter designed for transport by cargo truck, fixed
E 1801 Practice for Adhesive Bonding of Aluminum Fac-
or rotary winged aircraft, by rail, and ship, designated as
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ings in Foam and Beam Type Shelters
Shelter, Electric Equipment S-250/G.
E 1851 Test Method for Electromagnetic Shielding Effec-
1.2 The values stated in inch-pound units are to be regarded
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tiveness of Durable Rigid Wall Relocatable Structures
as the standard. The values given in parentheses are for
E 1925 Specification for Engineering and Design Criteria
information only.
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for Rigid Wall Relocatable Structures
1.3 The following safety hazards caveat refers only to the
2.2 Federal Air Regulation (FAR):
test methods portion of this specification. This standard does
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FAR 25.853 Compartment Interior
not purport to address the safety concerns, if any, associated
2.3 Military Standards:
with its use. It is the responsibility of the user of the standard
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MIL-W-6858 Welding, Resistance: Spot and Seam
to establish appropriate safety and health practices and
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MIL-M-13231 Marking of Electronic Items
determine the applicability of regulatory limitations prior to
MIL-F-14072 Finishes for Ground Based Electronic Equip-
use.
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ment
2. Referenced Documents
MIL-DTL-55507 Shelter, Electrical Equipment (With or
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Without Equipment), Packaging of
2.1 ASTM Standards:
MIL-STD-252 Classification of Visual and Mechanical De-
C 273 TestMethodforShearPropertiesinFlatwisePlaneof
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fects for Equipment, Electronic, Wired, and Other De-
Flat Sandwich Constructions or Sandwich Cores
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vices
D 1621 Test Method for Compressive Properties of Rigid
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MIL-STD-810 Environmental Engineering Considerations
Cellular Plastics
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and Laboratory Tests
D 1622 Test Method forApparent Density of Rigid Cellular
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MIL-STD-1235 Single and Multi-Level Continuous Sam-
Plastics
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pling Procedures and Tables for Inspection by Attributes
D 2842 Test Method forWaterAbsorption of Rigid Cellular
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MIL-STD-2219 Fusion Welding for Aerospace Applica-
Plastics
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tions
E 1730 Specification for Rigid Foam for Use in Shelter,
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2.4 Drawings:
Sandwich Panel Cores
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DL-SM-B-563500 Shelter, Electrical Equipment, S-250/G
E 1749 Terminology Relating to Rigid Wall Relocatable
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DL-5M-B-649950 Mod, Kit, EMI, MK-1092/G
Shelters
DL-SM-B-650123 Shelter, Electrical Equipment, S-250/G
E 1773 Practice for Sealing Rigid Wall Tactical Shelters
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(Shielded)
with Polysulfide Based Sealants
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SM-D-208679 Outer Door Assembly
E 1793 Practice for Preparation of Aluminum Alloy for
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SM-D-208682 Inner Door Assembly
Bonding in Foam and Beam Type Transportable Shelters
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SM-C-435904 Latch Keeper
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SM-C-435937 Nameplate
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SM-B-563559 Adhesive
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This specification is under the jurisdiction of ASTM Committee E06 on
Performance of Buildings and is the direct responsibility of Subcommittee E06.53
on Materials and Processes for Durable Rigid Wall Relocatable Structures.
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Current edition approved Oct. 10, 2001. Published November 2001. Originally Available from Flight Standards Service, FederalAviationAdministration, 800
published as E 1974–98. Last previous edition E 1974–01. Independence Ave., SW, Washington, DC 20591.
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Annual Book of ASTM Standards, Vol 15.03. Available from Standardization Documents Order Desk Bldg. 4 Section D, 700
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Annual Book of ASTM Standards, Vol 08.01. Robbins Ave., Philadelphia, PA 19111–5094. Attn: NPODS.
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Annual Book of ASTM Standards, Vol 08.02. Available from USArmy Natick Soldier Center,ATTN:AMSRD-NSC-CP-CS,
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Annual Book of ASTM Standards, Vol 04.11 Kansas Street, Natick, MA 01760-5018.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E 1974 – 01a
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NOTE 1—Allotherterminologyrelatedtothisspecificationisdefinedin
SM-B-563655 Foam, Rigid, Plastic
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Terminology E 1749.
SM-D-563754 Diagram, Flatness and Squareness
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SM-C-564839 Gasket, Silicone
4. Materials Requirements
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SC-C-595337 Padlock and Key
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4.1 General—The materials and components shall be as
SC-B-595538 Bonding Procedure
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specified here
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