Question 5.4: A long channel has a compound cross section (Fig. 5-11) and ...
A long channel has a compound cross section (Fig. 5-11) and a free overfall at the downstream end. The channel discharge is 2.5 m³/s, and the Manning n for the main channel and for the floodplain are 0.013 and 0.0144 respectively. Discuss and sketch the water surface profiles for the following four channel bottom slopes, S_{0} = 0.0094, 0.0049, 0.0029 and 0.001.
Given:
Q = 0.5 m³/s;
n_{m} = 0.013
n_{f} = 0.0144
Channel cross section, as shown in Fig. 5-11.
Determine:
Water-surface profiles for S_{o} = 0.0094, 0.0049, 0.0029, and 0.001.
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