Area of a Tank and Cubic Feet Per Foot of Bed

In Reference to Carbon Towers and Activated Carbon Filtration (GAC)

DIAMETER
IN FEET

DIAMETER
IN INCHES

AREA
SQ.FT.

VOL.
CF/1FT
OF BED

VOL.
CF/2FT
OF BED

VOL.
CF/3FT
OF BED

VOL.
CF/4FT
OF BED

VOL.
CF/5FT
OF BED

VOL.
CF/6FT
OF BED
0.5 6 0.2 0.2 0.39 0.59 0.79 0.98 1.18
0.6 7 0.27 0.27 0.53 0.8 1.07 1.34 1.6
0.7 8 0.35 0.35 0.7 1.05 1.4 1.75 2.09
0.8 9 0.44 0.44 0.88 1.33 1.77 2.21 2.65
0.8 10 0.55 0.55 1.09 1.64 2.18 2.73 3.27
0.9 11 0.66 0.66 1.32 1.98 2.64 3.3 3.96
1 12 0.79 0.79 1.57 2.36 3.14 3.93 4.71
1.1 13 0.92 0.92 1.98 2.76 3.68 4.6 5.52
1.2 14 1.13 1.13 2.26 3.39 4.52 5.65 6.78
1.3 15 1.23 1.23 1.46 3.69 4.92 6.15 7.38
1.3 16 1.4 1.4 1.8 4.2 5.6 7 8.4
1.4 17 1.57 1.57 3.14 4.71 6.28 7.85 9.42
1.5 18 1.77 1.77 3.54 5.31 7.08 8.85 10.62
1.6 19 1.96 1.96 3.92 5.88 7.84 9.8 11.76
1.7 20 2.18 2.18 4.36 6.54 8.72 10.9 13.08
1.8 21 2.41 2.41 4.82 7.23 9.64 12.05 14.46
1.8 22 2.64 2.64 5.28 7.92 10.56 13.2 15.84
1.9 23 2.89 2.89 5.78 8.67 11.56 14.45 17.34
2 24 3.14 3.14 6.28 9.42 12.56 15.71 18.85
2.5 30 4.91 4.91 9.82 14.73 19.63 24.54 29.45
3 36 7.07 7.07 14.14 21.21 28.27 35.34 42.41
3.5 42 9.62 9.62 19.24 28.86 38.48 48.11 57.73
4 48 12.57 12.57 25.13 37.7 50.27 62.83 75.4
4.5 54 15.9 15.9 31.81 47.71 63.62 79.52 95.43
5 60 19.63 19.63 39.27 58.9 78.54 98.17 117.8
5.5 66 23.76 23.76 47.52 71.27 95.03 118.8 142.6
6 72 28.27 28.27 56.55 84.82 113.1 141.4 169.7
6.5 78 33.18 33.18 66.37 99.55 132.7 165.9 199.1
7 84 28.48 28.48 76.97 115.5 153.9 192.4 230.9
7.5 90 44.18 44.18 88.36 132.5 176.7 220.9 265.1
8 96 50.27 50.27 100.5 150.8 201.1 251.3 301.6
8.5 102 56.75 56.75 113.5 170.2 227 283.7 340.5
9 108 63.62 63.62 127.2 190.9 254.5 318.1 381.7
9.5 114 70.88 70.88 141.8 212.7 283.5 354.4 425.3
10 120 78.54 78.54 157.1 235.6 314.2 392.7 471.2
10.5 126 86.59 86.59 173.2 259.8 346.4 433 519.5
11 132 95.03 95.03 190.1 285.1 380.1 475.2 570.2
11.5 138 103.9 103.9 207.7 311.6 415.5 519.3 623.2
12 144 113.1 113.1 226.2 339.3 452.4 565.5 678.6
12.5 150 122.7 122.7 245.4 368 490.9 613.6 736.3