TABLE OF CONTENTS P.4.1 Classify the trapezoidal channels listed below as mild, steep, horizontal, critical, or adverse.
| Channel | Q (cfs) | b (ft) | m | n | S 0 |
|---|---|---|---|---|---|
| 1 | 300 | 5.0 | 2.0 | 0.016 | 0.0004 |
| 2 | 350 | 4.5 | 2.0 | 0.022 | 0.0001 |
| 3 | 200 | 5.0 | 1.5 | 0.0 | 0 |
| 4 | 300 | 5.0 | 1.5 | 0.013 | 0.01 |
| 5 | 250 | 4.5 | 1.0 | 0.013 | 0.02 |
| 6 | 300 | 5.0 | 0 | 0.022 | 0.001 |
P.4.2 Classify the trapezoidal channels listed below as mild, steep, horizontal, critical, or adverse.
| Channel | Q (m 3 /s) | b (m) | m | n | S 0 |
|---|---|---|---|---|---|
| 1 | 30 | 5.0 | 1.0 | 0.013 | 0.0001 |
| 2 | 18 | 3.0 | 2.0 | 0.016 | 0.01 |
| 3 | 22 | 3.5 | 1.5 | 0.020 | 0 |
| 4 | 20 | 3.0 | 2.0 | 0.021 | 0.005 |
| 5 | 100 | 15.0 | 3.0 | 0.020 | 0.0002 |
| 6 | 50 | 8.0 | 2.0 | 0.016 | 0.004 |
P.4.3 Suppose that both channels shown in Figure P.4.1 are trapezoidal, infinitely long, and have a bottom width of b = 5 ft and side slopes of m = 2.
Figure P.4.1: Problems P.4.3 P.4.8 and P.4.11 P.4.12
The discharge is Q = 300 cfs. Determine the type of the water surfaces profiles...
