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Storm/Flood Engineering
- Thread starter 24J
- Start date
Use HEC12 Chart 11, choose which flow is present.
For weir flow, depth = [Qt/(Cw*P)]^(2/3), ft
P=perimeter of grate, I use 3.0 for Cw
For orifice flow, depth = [Qt/(Co*A*2g)]^(1/0.5), ft
A=effective flow area of grate, I use 0.67 for Co
For weir flow, depth = [Qt/(Cw*P)]^(2/3), ft
P=perimeter of grate, I use 3.0 for Cw
For orifice flow, depth = [Qt/(Co*A*2g)]^(1/0.5), ft
A=effective flow area of grate, I use 0.67 for Co
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