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Emgine Pressure
NP + FL +/- Head + Appliance
Net Pump Pressure
Hydrant = EP - Intake Pressure
Drafting = EP + Pressure Correction (
^{Feet of Lift + FL}
)
^{2.3 }
2 (Q)
^{2 }
x L
Q = Quantity of water flowing
L = 100' Lengths of 2
^{1/2 }
Hose
Volume of a Cylinder
.7854 x D
^{2}
X H or L = Cubic Feet
D
^{2}
6L = Gallons
Pressure at the bottom of a container
Height x .5 = Pressure (Field)
Height x .434 = Pressure (True)
Pressure at the bottom of a container
*PSI are given
PSI @ bottom x 2.304 = Height
Fire Flow Solid Stream
29.7 x D
^{2}
x Square Root NP = GPM
30 x D
^{2}
x Square Root NP (
Field
) = GPM
Fire Flow Solid Stream (Open Butt)
29.7 x D
^{2}
x Square Root NP x .9
Nozzle Reaction Solid Stream
1.5 x D
^{2}
x NP
True = 1.57 x D
^{2}
x NP
Nozzle Reaction Fog Stream
.5 x GPM
True = .0505 x GPM x Square Root NP
Round Pools
(Amount in Gallons)
3.14 x R
^{2}
x D x 7.5
Square / Rectangular Pools
(Amount in Gallons)
L x W x D x 7.5
Author
Neptune2633
ID
26489
Card Set
Formulas
Description
Various Formulas
Updated
2010-07-16T02:24:04Z
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