nd за Problem 4.5: An uncontrolled overflow spillway of 5 m height will be designed to evacuate Q. = 400 m³/s. The design tailwater depth is estimated to be 4 m. The approach channel and the downstream of the spillway are rectangular in cross- section having widths of 40 m. Headloss over the spillway face can be taken as 10% of the velocity head at the toe of the spillway. What kind of energy dissipating facility is to be selected? Answer: y₂ > y3 (4.33 m> 4 m) A suitable USBR-type stilling basin.

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Problem 4.5: An uncontrolled overflow spillway of 5 m height will be designed to
evacuate Q. = 400 m³/s. The design tailwater depth is estimated to be 4 m. The
approach channel and the downstream of the spillway are rectangular in cross-
section having widths of 40 m. Headloss over the spillway face can be taken as
10% of the velocity head at the toe of the spillway. What kind of energy
dissipating facility is to be selected?
Answer: y₂ > y3 (4.33 m> 4 m) A suitable USBR-type stilling basin.
Transcribed Image Text:nd ga Problem 4.5: An uncontrolled overflow spillway of 5 m height will be designed to evacuate Q. = 400 m³/s. The design tailwater depth is estimated to be 4 m. The approach channel and the downstream of the spillway are rectangular in cross- section having widths of 40 m. Headloss over the spillway face can be taken as 10% of the velocity head at the toe of the spillway. What kind of energy dissipating facility is to be selected? Answer: y₂ > y3 (4.33 m> 4 m) A suitable USBR-type stilling basin.
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