Example: We must construct a 6-foot berm around a 3,000-barrel tank.
D = 2.68 x
3,000___
61
D = 2.68 x
3,000___
5
D = 2.68 x
___
600
D = 2.68 x 24.49 = 65.6
D = 66 ft
The formula for determining the height of a firewall based on the diameter is:
H=
C
+ 1
(D / 2.68)
Example: Capacity of the storage tank is 3,000-barrels, and the diameter is 65.7 feet:
H=
3,000
+ 1
(65.7 / 2.68)
H=
3,000
+ 1
(24.51)
H = 4.99 + 1 = 5.99
H = 6 ft
Another important factor to be considered when constructing a berm is the amount of soil required. Figure 3-2
identifies the general dimensions that must be considered when using the formula below. Figure 3-3 and
Table 3-1, identify more specific dimensions for given tank sizes. The formula for determining the amount of soil
required for a particular sized berm is:
V=AxL
A = W + B (h)
2
V=
W + B (h) L
2
V (cubic yards) = V
27
Example: Amount of soil required for a berm around a 3,000-gallon tank:
3-3
QM 5096
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