PART B - FORMULA
Tank Capacity
Fire Wall
Inner Dimensions
(Gallons)
Dimensions (Feet)
(Feet)
10,000
3 high, 1.5 wide
26 by 26
20,000
4 high, 1.5 wide
31 by 35
50,000
4 high, 1.5 wide
73 by 33
210,000
5.5 high, 1 wide
73 by 73
6.5 wide at bottom
The formula for determining the inside diameter of the firewall is:
c
d = 2.68 X
h 1
c = Tank capacity [known, (in barrels)]
h = Height of firewall [known, (in feet)]
d = Diameter of firewall (unknown)
Example:
We must construct a six foot berm around a 3000 bbl tank.
3000
d = 2.68 x
6 1
3000
d 2. 68 x
5
d 2.68 x600 2.68x24.5 67.5
d 67.5 ft
The formula for determining the height of a firewall based on the
diameter is:
c
h
1
2
D 2.68
Example:
Capacity of the storage tank is 3000 bbl, the diameter is 67.5:
3000
h
1
2
67.5 2.68
3000
h
1
634.36
h 4.73 1 5.73or 6 feet
12-85
QM 5099
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