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2 cards from this section. Quick, good the night before a test.
What does the letter 'n' represent in Manning's formula?
Think about what affects flow in a channel.
Define what a wetted perimeter is.
Consider where the water touches the channel.
What is the primary purpose of Manning's formula?
Think about what you need to know for water flow.
True or False: The wetted perimeter is the same as the total perimeter of the channel.
Consider where water flows in the channel.
A trapezoidal channel has a bottom width of 6 m, a slope of 2:1, and an n value of 0.025. What slope must the channel have to carry a discharge of 150 cubic meters per second at a depth of 4 m?
Don’t forget to check your area and perimeter calculations.
In a circular pipe with an diameter of 1.2 m flowing full, estimate the maximum discharge coefficient if its n value is 0.015 and it is inclined at 1 in 800.
You may need to find the hydraulic radius prior to plugging values into the equation.
4 more questions in this section. Enroll free to practise them all.
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