Quantcast Table C-38. Minimum Thickness of Polycarbonate (in.) to Survive Incident Overpressure from 1000-lb (460-kg) TNT

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MIL-HDBK-1013/12
Table C-38
Minimum Thickness of Polycarbonate (in.) to Survive Incident Overpressure from
1000-lb (460-kg) TNT, Aspect Ratio, a/b = 1.0
Standoff Distance,
Plate
ft
Dimensions,
in. (m)
a
b
60
100
200
300
(20 m)
(30 m)
(60 m)
(90 m)
12
12
7/8
1/2
1/4
1/4
(0.30)  (0.30)  (22 mm)
(12 mm)
(6 mm)
(6 mm)
18
18
1 1/4
5/8
3/8
1/4
(0.45)  (0.45)  (32 mm)
(16 mm)
(9 mm)
(6 mm)
24
24
1 1/2
3/4
3/8
3/8
(0.60)  (0.60)  (38 mm)
(19 mm)
(9 mm)
(9 mm)
30
30
1 3/4
7/8
1/2
3/8
(0.75)  (0.75)  (44 mm)
(22 mm)
(12 mm)
(9 mm)
36
36
2
1
5/8
3/8
(0.90)  (0.90)  (51 mm)
(25 mm)
(16 mm)
(9 mm)
42
42
2 1/8
1 1/8
5/8
1/2
(1.05)  (1.05)  (54 mm)
(28 mm)
(16 mm)
(12 mm)
48
48
2 1/4
1 3/8
3/4
1/2
(1.20)  (1.20)  (57 mm)
(35 mm)
(19 mm)
(12 mm)
54
54
2 3/8
1 3/8
3/4
5/8
(1.35)  (1.35)  (60 mm)
(35 mm)
(19 mm)
(16 mm)
60
60
2 5/8
1 1/2
7/8
5/8
(1.50)  (1.50)  (64 mm)
(38 mm)
(22 mm)
(16 mm)
Cross-section is too thick for typical security frame,
requires special consideration.
156





 


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