Table C-15. Minimum Thickness of Thermally Tempered Glass (in.) to Survive Incident Overpressure from 500-lb TNT

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MIL-HDBK-1013/12
Table C-14
Minimum Thickness of Thermally Tempered Glass (mm) to Survive Incident
Overpressure from 100-kg TNT, Aspect Ratio, a/b = 1.5
Standoff Distance (m)
Plate
Dimensions
(m)
a
b
20
30
60
90
0.45
0.30
6, 6
6, 3
3,
3
3,
3
0.68
0.45
9, 9
6, 6
3,
3
3,
3
0.90
0.60
12, 12
9, 6
6,
3
3,
3
1.12
0.75
16, 16
9, 9
6,
3
3,
3
1.35
0.90
19, 16
12, 9
6,
6
6,
3
1.58
1.05
19, 19
12, 12
6,
6
6,
3
1.80
1.20
16, 16, 16
16, 16
9,
6
6,
3
Table C-15
Minimum Thickness of Thermally Tempered Glass (in.) to Survive Incident
Overpressure from 500-lb TNT, Aspect Ratio, a/b = 1.5
Plate
Standoff Distance (ft)
Dimensions
(in.)
a
b
60
100
200
300
18
12
3/8,
3/8
1/4,
1/4
1/8,
1/8
1/8,
1/8
27
18
1/2,
1/2
3/8,
1/4
1/4,
1/8
1/8,
1/8
36
24
3/4,
3/4
3/8,
3/8
1/4,
1/4
1/4,
1/8
45
30
5/8,
1/2,
1/2
1/2,
1/2
3/8,
1/4
1/4,
1/8
54
36
5/8,
5/8,
5/8
5/8,
5/8
3/8,
1/4
1/4,
1/8
63
42
3/4,
3/4,
3/4
5/8,
5/8
3/8,
3/8
1/4,
1/4
72
48
5/8,
5/8,
5/8,  3/4,
3/4
3/8,
3/8
1/4,
1/4
5/8
Cross-section is too thick for typical security frame, requires
special consideration.
144