| Standard Gauge | Decimal | Weight per Square Foot (lb.) |
|---|---|---|
| 7 | 0.1793 | 7.500 |
| 8 | 0.1644 | 6.875 |
| 9 | 0.1494 | 6.250 |
| 10 | 0.1345 | 5.625 |
| 11 | 0.1196 | 5.000 |
| 12 | 0.1046 | 4.375 |
| 13 | 0.0897 | 3.750 |
| 14 | 0.0747 | 3.125 |
| 15 | 0.0673 | 2.812 |
| 16 | 0.0598 | 2.500 |
| 17 | 0.0538 | 2.250 |
| 18 | 0.0478 | 2.000 |
| 19 | 0.0418 | 1.750 |
| 20 | 0.0359 | 1.500 |
| 21 | 0.0329 | 1.375 |
| 22 | 0.0299 | 1.250 |
| 23 | 0.0269 | 1.125 |
| 24 | 0.0239 | 1.000 |
| 25 | 0.0209 | 0.875 |
| 26 | 0.0179 | 0.750 |
| 27 | 0.0164 | 0.6875 |
| 28 | 0.0149 | 0.625 |
| 29 | 0.0135 | 0.5625 |
| 30 | 0.0120 | 0.500 |