A very wide rectangular channel is designed to carry a discharge of 5 m/s per meter width. The design is based on the Manning's equation with the roughness coefficient obtained from the grain size using Strickler's equation and results in a normal depth of 1.0 m. By mistake, however, the engineer used the grain diameter in the Strickler's equation instead of in meter. What should be the correct normal depth?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A very wide rectangular channel is
designed to carry a discharge of 5 m/s per
meter width. The design is based on the
Manning's equation with the roughness
coefficient obtained from the grain size
using Strickler's equation and results in a
normal depth of 1.0 m. By mistake,
however, the engineer used the grain
diameter in the Strickler's equation
instead of in meter. What should be the
correct normal depth?
Transcribed Image Text:A very wide rectangular channel is designed to carry a discharge of 5 m/s per meter width. The design is based on the Manning's equation with the roughness coefficient obtained from the grain size using Strickler's equation and results in a normal depth of 1.0 m. By mistake, however, the engineer used the grain diameter in the Strickler's equation instead of in meter. What should be the correct normal depth?
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