Problem 5. A small river is in flood stage and you need to estimate the flow rate through it. The main channel has a Manning coefficient of 0.025, while the flood plain is covered in light brush and has a larger Manning coefficient of 0.040. The idealized river cross-section is shown below (not to scale). Flood Plain Channel nu0.040 n=0.025 :2ft 500 ft 8 ft 100 ft

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Problem 5.
A small river is in flood stage and you need to estimate the flow rate through it. The main channel has
a Manning coefficient of 0.025, while the flood plain is covered in light brush and has a larger Manning
coefficient of 0.040. The idealized river cross-section is shown below (not to scale).
Flood Plain
Channel
n-0.040
n=0.025
:2tt
500 t
8 ft
100 ft
Transcribed Image Text:Problem 5. A small river is in flood stage and you need to estimate the flow rate through it. The main channel has a Manning coefficient of 0.025, while the flood plain is covered in light brush and has a larger Manning coefficient of 0.040. The idealized river cross-section is shown below (not to scale). Flood Plain Channel n-0.040 n=0.025 :2tt 500 t 8 ft 100 ft
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