This section is from the "Farm And Garden Rule-Book" book, by L. H. Bailey. Amazon: Farm and garden rule-book
Quantity of water held by pipes of various sizes
Diameter of Contents of 100 feet
Bore in Length gal. 1/2....................... 1.02
11/2....................... 9.18
2 ....................... 16.32
21/2....................... 25.50
3 ....................... 36.72
4 ....................... 65.28
Number of gallons in circular tanks and wells
To find the contents in gallons of circular tanks, square the diameter in feet, multiply by the depth, and then multiply by 5.875.
Diameter | 3 ft. | 4 ft. | 5 ft. | 6 ft. | 7 ft. | 8 ft. | 9 ft. | 10 ft. | 11 ft. | 12 ft. |
ft. | ||||||||||
4 | 282.00 | 376.00 | 470.00 | 564.00 | 658.00 | 752.00 | 846.00 | 940.00 | 1034.00 | 1128.00 |
5 | 440.63 | 587.50 | 734.38 | 881.25 | 1028.13 | 1175.00 | 1321.89 | 1468.76 | 1615.63 | 1762.50 |
6 | 634.50 | 846.04 | 1057.50 | 1269.00 | 1480.50 | 1692.00 | 1903.50 | 2115.00 | 2326.50 | 2538.00 |
7 | 863.63 | 1151.50 | 1439.38 | 1727.25 | 2015.13 | 2303.00 | 2590.89 | 2878.76 | 3166.63 | 3454.50 |
8 | 1128.00 | 1504.00 | 1880.00 | 2256.00 | 2632.00 | 3008.00 | 3384.00 | 3760.00 | 4136.00 | 4512.00 |
9 | 1427.63 | 1903.50 | 2379.38 | 2855.26 | 3331.13 | 3807.04 | 4282.89 | 4758.76 | 5234.63 | 5710.52 |
10 | 1762.52 | 2350.00 | 2937.52 | 3525.00 | 4112.52 | 4700.00 | 5287.56 | 5875.04 | 6461.52 | 7050.00 |
11 | 2132.63 | 2843.50 | 3554.38 | 4265.26 | 4976.12 | 5687.00 | 6397.89 | 7108.76 | 7819.63 | 8530.52 |
12 | 2538.00 | 3384.00 | 4230.00 | 5076.00 | 5922.00 | 6768.00 | 7614.00 | 8460.00 | 9306.00 | 10152.00 |
Approximate contents of cylinders
Diam. Depth Quantity
13/4 in. X 3 in. contains 1 gill.
31/2 in. X 3 in. contains 1 pint.
31/2 in. X 6 in. contains 1 quart.
7 in. X 6 in. contains 1 gallon.
14 in. X 12 in. contains 8 gallons.
14 in. X 15 in. contains 10 gallons.
Number of gallons in square-built tanks
To find the number of gallons in any square or oblong vessel, multiply the number of cubic feet contained in it, by 7.4805; or, to find the contents of a depth not given in this table, multiply the contents of tank one foot deep by the required depth in feet.
For other comparable figures, see page 531; for capacities of silos, pages 473 to 477; for capacities of reservoirs, page 497. Various pipe figures may be found in Chapters XI and XXV.

 
Continue to: