Number Of Gallons In Circular Tanks And Wells

Diameter.

When the Depth is

Feet.

3 ft.

4 ft.

5 ft.

6 ft.

7 ft.

8 ft.

9 ft.

10 ft.

l1ft.

12 ft.

4

235

313

391

469

548

626

704

783

861

939

5

367

489

611

734

856

979

1101

1223

1346

1468

6

528

704

881

1057

1233

1409

1585

1762

1938

2114

7

719

959

1199

1439

1678

1918

2158

2398

2638

2878

8

939

1253

1566

1879

2192

2506

2819

3132

3445

3759

9

1189

1585

1982

2378

2775

3171

3568

3964

4361

4757

10

1468

1957

2447

2936

3426

3915

4405

4894

5384

5873

11

1776

2368

2961

3553

4145

4737

5330

5922

6514

7107

12

2114

2812

3524

4229

4933

5638

6343

7048

7753

8458

The contents in cubic feet and gallons may be found in the same way with water pots and hot-water pipes. Thus, a yard of 4-in. hot-water pipe contains 4 x 4 x .7854 = 125664 sq. in., the volume is 125664 X 36 = 452.3904 cub. in., and the water contained is something over 13 pt. Every foot run of 4-in. pipe holds .544 gal. of water weighing 5.44 lb.