This section is from the book "Notes On Building Construction", by Henry Fidler. Also available from Amazon: Notes on building construction.
Weight in lbs. of a Square Foot of Different Metals, in Thicknesses varying by 1/16th of an Inch.
Thickness. Inches. | Zinc. | Brass. | Gun Metal. | Tin. | Lead. | ||||
l/16 | 2.3 | 2.3 | 2.5 | 2.9 | 2.3 | 2.6 | 27 | 2.4 | 37 |
1/8 | 5.0 | 4.7 | 5.1 | 5.8 | 47 | 5.3 | 5.5 | 4.8 | 7.4 |
3/16 | 7.5 | 7.0 | 7.6 | 8.7 | 7.0 | 8.2 | 8.2 | 7.2 | 11.2 |
1/4 | 10.0 | 9.4 | 10.2 | 11.6 | 9.4 | 11.0 | 10.9 | 9.6 | 14-9 |
5/16 | 12.5 | 11.7 | 12.8 | 14.5 | 11.7 | 13.7 | 13.7 | 12.0 | 18.6 |
3/8 | 15.0 | 141 | 15.3 | 17.2 | 14.0 | 16.4 | 16.4 | 14.4 | 22.3 |
7/16 | 17.5 | 16.4 | 17.9 | 20.0 | 16.4 | 19.2 | 19.1 | 16.8 | 26.0 |
1/2 | 20.0 | 187 | 20.4 | 22.9 | 18.7 | 219 | 21.9 | 19.3 | 297 |
9/16 | 22.5 | 21.1 | 25.0 | 25.7 | 21.1 | 24.6 | 24.6 | 21.7 | 33.4 |
5/8 | 25.0 | 23.5 | 25.5 | 28.6 | 23.4 | 27.4 | 27.3 | 24.1 | 37.1 |
1 1/16 | 27.5 | 25.8 | 28.1 | 31.4 | 25.7 | 30.1 | 30.0 | 26.5 | 40.9 |
3/4 | 30.0 | 28.1 | 30.6 | 34.3 | 28.1 | 32.9 | 32.8 | 28.9 | 44.6 |
1 3/16 | 32.5 | 30.5 | 33.2 | 37.2 | 30.4 | 35.6 | 35.0 | 31.3 | 48.3 |
7/8 | 35.0 | 32.8 | 35.7 | 40.0 | 32.8 | 38.3 | 38.2 | 337 | 52.0 |
15/16 | 37.5 | 35.2 | 38.3 | 42.9 | 351 | 41.2 | 410 | 36.1 | 557 |
1 | 40.0 | 37.5 | 40.8 | 45.8 | 37.5 | 43.9 | 437 | 38.5 | 59.4 |
The weight per square foot to any gauge can easily be obtained from the above Table by multiplying the weight of a square foot of the metal 1 inch thick by the thickness of the gauge in inches or parts of an inch.
1 Hutton's Works Manager's Handbook, where very useful Tables of the weight of iron according to this and the Imperial Standard Gauge are given.
 
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