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 MIL-HDBK-1013/12
Table C-18
Minimum Thickness of Thermally Tempered Glass (mm) to Survive Incident
Overpressure from 460-kg TNT, Aspect Ratio, a/b = 1.5
Standoff Distance (m)
Plate
Dimensions
(m)
a
b
20
30
60
90
0.45
0.30
12,
12
9, 6
3, 3
3, 3
0.68
0.45
19,
19
9, 9
6, 6
6, 3
0.90
0.60
16,
16, 16
12, 12
9, 6
6, 3
1.12
0.75
19,
19, 19
16, 16
9, 6
6, 6
1.35
0.90
19,
19, 16,
19, 19
9, 9
9, 6
16
1.58
1.05
16, 16, 16,
16, 12, 12
12, 9
9, 6
16, 16
16, 16, 16
12, 12
9, 9
1.80
1.20
19, 19, 19,
16, 16
Cross-section is too thick for typical security frame, requires
special consideration.
Table C-19
Minimum Thickness of Thermally Tempered Glass (in.) to Survive Incident
Overpressure from 50-lb TNT, Aspect Ratio, a/b = 2.0
Plate
Standoff Distance (ft)
Dimensions
(in.)
a
b
60
100
200
300
24
12
1/4,
1/8
1/8,
1/8
1/8,
1/8
1/8,
1/8
36
18
1/4,
1/4
1/4,
1/8
1/8,
1/8
1/8,
1/8
48
24
3/8,
1/4
1/4,
1/4
1/8,
1/8
1/8,
1/8
60
30
3/8,
3/8
1/4,
1/4
1/8,
1/8
1/8,
1/8
72
36
1/2,
3/8
3/8,
1/4
1/8,
1/8
1/8,
1/8
84
42
1/2,
1/2
3/8,
1/4
1/4,
1/8
1/8,
1/8
146
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