Reference Info
U.S. Gallons in Round Tanks
| Dia. Tanks | No. U.S. Gals. | Cu. Ft and Area in Sq. Ft. | |
|---|---|---|---|
| 1 | 0 | 5.87 | 0.785 |
| 1 | 1 | 6.89 | 0.922 |
| 1 | 2 | 8 | 1.069 |
| 1 | 3 | 9.18 | 1.227 |
| 1 | 4 | 10.44 | 1.396 |
| 1 | 5 | 11.79 | 1.5765 |
| 1 | 6 | 13.22 | 1.767 |
| 1 | 7 | 14.73 | 1.969 |
| 1 | 8 | 16.32 | 2.182 |
| 1 | 9 | 17.99 | 2.405 |
| 1 | 10 | 19.75 | 2.64 |
| 1 | 11 | 21.58 | 2.885 |
| 2 | 0 | 23.5 | 3.142 |
| 2 | 1 | 25.5 | 3.409 |
| 2 | 2 | 27.58 | 3.687 |
| 2 | 3 | 29.74 | 3.976 |
| 2 | 4 | 31.99 | 4.276 |
| 2 | 5 | 34.31 | 4.587 |
| 2 | 6 | 36.72 | 4.909 |
| 2 | 7 | 39.21 | 5.241 |
| 2 | 8 | 41.78 | 5.585 |
| 2 | 9 | 44.43 | 5.94 |
| 2 | 10 | 47.16 | 6.305 |
| 2 | 11 | 49.98 | 6.681 |
| 3 | 0 | 52.88 | 7.069 |
| 3 | 1 | 55.86 | 7.467 |
| 3 | 2 | 58.92 | 7.876 |
| 3 | 3 | 62.06 | 8.296 |
| 3 | 4 | 65.28 | 8.727 |
| 3 | 5 | 68.58 | 9.168 |
| 3 | 6 | 71.97 | 9.621 |
| 3 | 7 | 75.44 | 10.085 |
| 3 | 8 | 78.99 | 10.559 |
| 3 | 9 | 82.62 | 11.045 |
| 3 | 10 | 86.33 | 11.541 |
| 3 | 11 | 90.13 | 12.048 |
| 4 | 0 | 94 | 12.566 |
| 4 | 1 | 97.96 | 13.095 |
| 4 | 2 | 102 | 13.635 |
| 4 | 3 | 106.12 | 14.186 |
| 4 | 4 | 110.32 | 14.748 |
| 4 | 5 | 114.61 | 15.321 |
| 4 | 6 | 118.97 | 15.9 |
| 4 | 7 | 123.42 | 16.5 |
| 4 | 8 | 127.95 | 17.1 |
| 4 | 9 | 132.56 | 17.72 |
| 4 | 10 | 137.25 | 18.35 |
| 4 | 11 | 142.02 | 18.99 |
| 5 | 0 | 146.88 | 19.63 |
| 5 | 1 | 151.82 | 20.29 |
| 5 | 2 | 156.83 | 20.97 |
| 5 | 3 | 161.93 | 21.65 |
| 5 | 4 | 167.12 | 22.34 |
| 5 | 5 | 172.38 | 23.04 |
| 5 | 6 | 177.72 | 23.76 |
| 5 | 7 | 183.15 | 24.48 |
| 5 | 8 | 188.66 | 25.22 |
| 5 | 9 | 194.25 | 25.97 |
| 5 | 10 | 199.92 | 26.73 |
| 5 | 11 | 205.67 | 27.49 |
31-1/2 GALLONS EQUAL 1 BARREL
To find the capacity of tanks greater than the largest given in the table, look in the table for a tank of one-half of the given size and multiply its capacity by 4, or one of one-third its size and multiply its capacity by 9, etc.
A gallon of water (U.S. Standard) weights 8-1/3 pounds and contains 231 cubic inches.
A cubic foot of water contains 7-1/2 gallons, 1728 cubic inches, and weighs 62-1/2 pounds.
To find the pressure in pounds per square inch of a column of water, multiply the height of the column in feet x .434.
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