Input Arguments
Parameter Value Units
Dia:
n:
S:
Q:

Assume uniform flow, small slope, and constant n.

At input slope, maximum open channel flow = 5.393 ft**3/sec .

At input slope, pipe full flow = 5.013 ft**3/sec .

Input flow exceeds pipe full flow.

There are two open channel flow solutions. Results for input flow: (rounded to three places)
Parameter Open-Flow, Deep Open-Flow, Shallow Circular Pipe Full Open-Flow, Critical
Slope (unit/unit) 0.006023 0.006023 0.00648 0.008048
Theta (rad) 5.931 4.736 6.283 4.142
Depth (ft) 1.24 1.072 1.25 0.925
Rh (ft) 0.331 0.378 0.313 0.376
A (ft**2) 1.226 1.12 1.227 0.973
Vel (ft/sec) 4.242 4.642 4.237 5.342
Top Width (ft) 0.219 0.873 0.000 1.097
Vel h (ft) 0.28 0.335 0.279 0.444
Nf 0.316 0.723 n/a 1
ref: Chow, Ven Te. Open-Channel Hydraulics, McGraw-Hill, 1959

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