Problem 2. A 25-foot wide rectangular channel with Manning’s n of 0.025 is carrying 5000 cfs....

Problem 2. A 25-foot wide rectangular channel with Manning’s n of 0.025 is carrying 5000 cfs. The slope of the channel is 0.05% (0.0005 ft/ft). At a specific point, the slope changes abruptly to 5%. Using the direct step method, calculate the profile upstream of the break in slope, extending upstream to a point where the depth is within 5 percent of normal depth. (That means the final depth in your direct step method is between 0.95 and 1.05 times normal depth.) Classify the flow profile (M-1, S-1, etc.).

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Ally Wells answered 9 months ago

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