Planning Drop Downs; Calculating Duct Resistance - Grizzly G0637 Owner's Manual

Planning Drop Downs

Figure 69.

Calculating Duct Resistance

Duct Approximate
Dia. Static Pressure
Loss Per Foot of
Rigid Pipe
Fitting 90˚
Dia. Elbow Elbow
Figure 70.
To calculate the static pressure of any given
line in the system, follow these steps:
1.
2.
Approximate
Static Pressure
Loss Per Foot
of Flex Pipe
45˚ 45˚ 90˚
Wye(Y) Wye(Y)