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Table Of Contents
Calculating Pipe Flow and Other Hydraulic Values by Using the Hazen-Williams Equations
519
the pipe is calculated and displayed at the bottom left of the dialog box. This
information is for display only and cannot be edited.
NOTE
If the data you entered has an error, the pipe graphic image does not
display. Check for an error message at the bottom of the dialog box.
9 Click OK to exit the dialog box.
Calculating Orifice Values
Use the Orifice Calculator to calculate hydraulic values for orifices.
The following illustration shows orifice values:
Orifice values
The Orifice Calculator uses the following formula:
QcA gH
2
where:
Q = Design flow rate
c = Orifice coefficient
A = Cross-sectional area
g = Acceleration due to gravity (32.174 ft/s
2
or 9.807 m/s
2
)
H = Total head (Headwater minus Tailwater)