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 TABLE 30
Recommended Design Criteria for Maximum Blast Pressure
Capacity for Glass Mounted in Rigid Window Frames
(Peak Incident or Reflected Pressure, psi)
Triangular load duration, msec
Type of Glass
<10
10-20
21-40
41-100
>100
Tempered
3.0
2.5
2.0
1.5
1.0
1/8 in
Tempered
6.0
4.5
4.0
3.0
2.5
1/4 in
Tempered
8.0
7.0
6.0
5.0
4.0
3/8 in
Regular
1/8 in
0.4
0.3
0.25
0.15
0.1
Regular
1/4 in
0.7
0.6
0.5
0.4
0.3
Regular
3/8 in
0.9
0.8
0.7
0.6
0.5
Notes:
1.
Rigid window frame provides continuous support for glass.
2.
Blast capacities are applicable to glass area of 20 sq ft or less.
3.
Tempered glass shall meet the requirements of ANSI Z97.1.
2.08-234
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