Figure 55.
Duct
Dia.
Approximate
Static Pressure
Loss Per Foot of
Rigid Pipe
Approximate
Static Pressure
Loss Per Foot
of Flex Pipe
Fitting
Dia.
90˚
Elbow
45˚
Elbow
45˚
Wye(Y)
90˚
Wye(Y)
To calculate the static pressure of any given
line in the system, follow these steps:
1.
2.
Calculating Duct Resistance
To Planer
Blast Gate
Flex Pipe
Rigid Pipe
Rigid Pipe
(Main Line)
Elbow
Clamp
Y Branch
Figure 54.
Planning Drop Downs
Figure
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