Table C-17. Minimum Thickness of Thermally Tempered Glass (in.) to Survive Incident Overpressure from 1000-lb TNT

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MIL-HDBK-1013/12
Table C-16
Minimum Thickness of Thermally Tempered Glass (mm) to Survive Incident
Overpressure from 230-kg TNT, Aspect Ratio, a/b = 1.5
Standoff Distance (m)
Plate
Dimensions
(m)
a
b
20
30
60
90
0.45
0.30
9, 9
6, 6
3, 3
3, 3
0.68
0.45
12, 12
9, 6
6, 3
3, 3
0.90
0.60
19, 19
9, 9
6, 6
6, 3
1.12
0.75
16, 12, 12
12, 12
9, 6
6, 3
1.35
0.90
16, 16, 16
16, 16
9, 6
6, 3
1.58
1.05
19, 19, 19
16, 16
9, 9
6, 6
1.80
1.20
16, 16, 16,
19, 19
9, 9
6, 6
16
Cross-section is too thick for typical security frame, requires
special consideration.
Table C-17
Minimum Thickness of Thermally Tempered Glass (in.) to Survive Incident
Overpressure from 1000-lb TNT, Aspect Ratio, a/b = 1.5
Plate
Standoff Distance (ft)
Dimensions
(in.)
a
b
60
100
200
300
18
12
1/2,
1/2
3/8,
1/4
1/8,
1/8
1/8,
1/8
27
18
3/4,
3/4
3/8,
3/8
1/4,
1/4
1/4,
1/8
36
24
5/8,
5/8, 5/8
1/2,
1/2
3/8,
1/4
1/4,
1/8
45
30
3/4,
3/4, 3/4
5/8,
5/8
3/8,
1/4
1/4,
1/4
54
36
3/4,
3/4, 5/8,
3/4,
3/4
3/8,
3/8
3/8,
1/4
5/8
63
42
5/8, 5/8, 5/8,  5/8, 1/2, 1/2
1/2, 3/8
3/8, 1/4
5/8, 5/8
72
48
3/4, 3/4, 3/4,  5/8, 5/8, 5/8
1/2, 1/2
3/8, 3/8
5/8, 5/8
Cross-section is too thick for typical security frame, requires
special consideration.
145