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Symmetrical Lay-ups Data Chart |
| Glass Designation |
Construction (glass-PVB-glass) |
Weight |
Test Standards |
Traditional
inches |
Metric
mm |
Traditional
inches |
Metric
mm |
Traditional
lbs/ft2 |
Metric
kg/m2 |
Safety
Category(1) |
UL 972
Burglary |
| 1/4 |
5.8 |
Lami - 0.015 - Lami |
2.7 - 0.38 - 2.7 |
2.93 |
14.30 |
I |
- |
| 1/4 |
6.1 |
Lami - 0.030 - Lami |
2.7 - 0.76 - 2.7 |
3.01 |
14.69 |
II |
- |
| 1/4 |
6.4 |
1/8 - 0.015 - 1/8 |
3 - 0.38 - 3 |
3.33 |
16.26 |
I |
- |
| 1/4 |
6.8 |
1/8 - 0.030 - 1/8 |
3 - 0.76 - 3 |
3.42 |
16.70 |
II |
- |
| 5/16 |
7.5 |
1/8 - 0.060 - 1/8 |
3 - 1.52 - 3 |
3.58 |
17.48 |
II |
yes |
| 5/16 |
8.2 |
1/8 - 0.090 - 1/8 |
3 - 2.28 - 3 |
3.75 |
18.31 |
II |
yes |
| 3/8 |
10.8 |
3/16 - 0.030 - 3/16 |
5 - 0.76 - 5 |
5.05 |
24.65 |
II |
yes |
| 7/16 |
11.5 |
3/16 - 0.060 - 3/16 |
5 - 1.52 - 5 |
5.21 |
25.44 |
II |
yes |
| 7/16 |
12.2 |
3/16 - 0.090 - 3/16 |
5 - 2.28 - 5 |
5.38 |
26.27 |
II |
yes |
| 1/2 |
12.8 |
1/4 - 0.030 - 1/4 |
6 - 0.76 - 6 |
6.67 |
32.56 |
II |
yes |
| 9/16 |
13.5 |
1/4 - 0.060 - 1/4 |
6 - 1.52 - 6 |
6.83 |
33.34 |
II |
yes |
| 9/16 |
14.2 |
1/4 - 0.090 - 1/4 |
6 - 2.28 - 6 |
7.00 |
34.17 |
II |
yes |
| 13/16 |
21.5 |
3/8 - 0.060 - 3/8 |
10 - 1.52 - 10 |
10.09 |
49.26 |
II |
yes |
| 13/16 |
22.2 |
3/8 - 0.090 - 3/8 |
10 - 2.28 - 10 |
10.26 |
50.09 |
II |
yes |
This table shows data for symmetrical lay-ups. Asymmetrical lay-ups, having two different thickness of glass, are also available on request.
(1) Applies to CPSC 16 CFR 1201 and CAN/CGSB-12.1. All laminated safety glass also meets ANSI Z97.1.
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