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 MIL-HDBK-1013/12
Table C-23
Minimum Thickness of Thermally Tempered Glass (in.) to Survive Incident
Overpressure from 500-lb TNT, Aspect Ratio, a/b = 2.0
Plate
Dimensions
Standoff Distance (ft)
(in.)
a
b
60
100
200
300
24
12
1/2,
3/8
1/4, 1/4
1/8,
1/8
1/8,
1/8
36
18
5/8,
1/2
3/8, 3/8
1/4,
1/8
1/4,
1/8
48
24
3/4,
3/4
1/2, 3/8
1/4,
1/4
1/4,
1/8
60
30
5/8,
5/8, 5/8
5/8, 1/2
3/8,
1/4
1/4,
1/4
72
36
3/4,
3/4, 3/4
5/8 ,5/8
3/8,
3/8
3/8,
1/4
84
42
5/8,
5/8, 5/8,
3/4, 5/8
1/2,
3/8
3/8,
1/4
5/8
Cross-section is too thick for typical security frame, requires
special consideration.
Table C-24
Minimum Thickness of Thermally Tempered Glass (mm) to Survive Incident
Overpressure from 230-kg TNT, Aspect Ratio, a/b = 2.0
Plate
Standoff Distance (m)
Dimensions
(m)
a
b
20
30
60
90
0.60
0.30
12, 9
6, 6
3, 3
3, 3
0.90
0.45
16, 12
9, 9
6, 3
6, 3
1.20
0.60
19, 19
12, 9
6, 6
6, 3
1.50
0.75
16, 16, 16
16, 12
9, 6
6. 6
1.80
0.90
19, 19, 19
16, 16
9, 9
9, 6
2.10
1.05
16, 16, 16,
19, 16
12, 9
9, 6
16
Cross-section is too thick for typical security frame, requires
special consideration.
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