Quantity of water held by pipes of various sizes

Diameter of                                                                                          Contents of 100 feet

Bore                                                                                                       in Length gal. 1/2....................... 1.02

## 1 ....................... 4.08

11/2....................... 9.18

2      .......................      16.32

21/2.......................      25.50

3      .......................      36.72

4      .......................      65.28

## 6 .......................146.90

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.

## Gallons When The Depth Is

 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.