Conditions for a best symmetrical trapezoidal section of an open channel
Answer:
- Half of the top width is equal to one of the side slope.
- Hydraulic Mean Depth = d/2.
Uniform Flow
- A trapezoidal channel is 10 m wide at the base and has a side slopes of 4 horizontal to 3 vertical. The bed slope is 0.002. The channel is lined with smooth concrete (Manning's n= 0.012). Hydraulic mean radius for a depth of flow of 3m is
- A rectangular channel 6m wide carries a discharge of 16 cumec uniform flow condition with normal depth of 1.60m. Assume Manning's n = 0.015. Find bed slope?
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- For a pipe of radius 'r' flowing under the action of gravity, the hydraulic depth is
- A Circular sewer 2 m diameter has to carry a discharge of 2 cumec when flowing nearly full. What is the minimum required slope to initiate the flow? Assume Manning's n = 0.015