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 MIL-HDBK-1013/12
English Units
Metric Units
Air Gap
(a)
(a)
Annealed Glass
Table 29
Table 30
Chemically Strengthened Glass (CS)
Table 29
Table 30
Extruded Ionomer
(b)
(b)
Heat Strengthened Glass (HS)
Table 29
Table 30
Polycarbonate
Table 31
Table 32
Thermally Tempered Glass (TTG)
Table 29
Table 30
(a) Use a cost factor of 40.0 per unit area and weight of 0.0
lb/sq-ft (0.0 kg/sq-m) for all air gaps.
(b) Extruded ionomer cost factors are not included in the
handbook. The analyst is advised to contact a security
window vendor for cost information.
Table 29
Glass Cost Factors and Weight per Unit Area (English Units)
Glass Type
Thickness
1/8
1/4
3/8
1/2
5/8
3/4
inch
inch
inch
inch
inch
inch
Annealed
1.0
2.1
4.6
6.0
12.5
15.0
Chemically Strengthened
4.3
5.4
7.9
N/A
N/A
N/A
Heat Strengthened
4.5
5.5
8.0
9.3
15.8
18.3
Thermally Tempered
4.5
5.5
8.0
9.3
15.8
18.3
Weight (lb/sq-ft)
1.6
3.1
5.3
6.6
8.5
10.1
Table 30
Glass Cost Factors and Weight per Unit Area (Metric Units)
Glass Type
Thickness
3 mm
6 mm
10 mm
12 mm
16 mm
19 mm
Annealed
1.0
2.1
4.6
6.0
12.5
15.0
Chemically Strengthened
4.3
5.4
7.9
N/A
N/A
N/A
Heat Strengthened
4.5
5.5
8.0
9.3
15.8
18.3
Thermally Tempered
4.5
5.5
8.0
9.3
15.8
18.3
Weight (kg/sq-m)
7.8
15.1
25.9
32.2
41.5
49.3
Table 31
Polycarbonate Cost Factors and Weight per Unit Area (English Units)
Property
Thickness
1/16
1/8
3/16
1/4
3/8
1/2
inch
inch
inch
inch
inch
inch
Cost Factor
7.5
12.6
18.6
22.0
41.1
57.5
Weight (lb/sq-ft)
0.4
0.7
1.1
1.4
2.1
2.8
83
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