MIL-PRF-32504
The shelter shall also provide additional blackout capability when viewed by night vision devices at a
distance of 1,650 feet while using the general illumination lighting system supplied with the shelter.
3.1.5 Shelter weather barrier: The shelter fabric shall meet the requirements in Table II Fabric
Requirements. The shelter shall be constructed of tear resistant PVC coated synthetic scrim material
weighing 24 (+/- 2) oz/yd and strong enough to meet the structural requirements of the shelter. See
Section 3.1.5.1 All of the shelter s fabric materials shall meet Berry Amendment requirements. The
shelter s fabric exterior color shall match Tan # 33446 and the interior shall match White, Untinted
#17925 - both as per FED-STD 595C.
3.1.5.1 Shelter Fabric Specifications:
Table II. Fabric requirements
Item
Standard
Base Fabric Type
Polyester
5.0 oz/yd2
Base Fabric Weight (nominal)
24 oz/yd2
Finished Coated Weight
+
2
ASTM D751
/- 2oz/yd
8" x 10" sample @ 12 in/min
Tongue Tear
ASTM D751
160/160 lbf
Trapezoid Tear
50/60 lbf
ASTM D751
Grab Tensile
375/350 lbf
ASTM D751
Strip Tensile
300/275 lbf/in
ASTM D751 Procedure B
Adhesion
10 lbf/in
ASTM D751 Dielectric Weld
Hydrostatic Resistance
500 psi
ASTM D751 Procedure A
Dead Load
2 inch seam, 4 hour, 1 inch strip
ASTM D751
106 lbf @ room temperature
53 lbf @ 1600F
Pass -400F
Low Temperature
ASTM D2136 LTC
1/8" mandrel, 4 hr LTC
7
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