A trapezoidal channel with a bottom width of Bo = 4 m and a sidewall slope of m = 2 carries a discharge of 8 m3/s. what is the critical depth of the channel? ( Show calculation and sketch) a) 0.84 m b) 0.72 m c) 0.96 m d) 0.66 m

A trapezoidal channel with a bottom width of Bo = 4 m and a sidewall slope of m = 2 carries a discharge of 8 m3/s. what is the critical depth of the channel? ( Show calculation and sketch) a) 0.84 m b) 0.72 m c) 0.96 m d) 0.66 m

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Length and Length related Variables

Length can de defined as the measurement or extent of physical quantities or objects from one terminal to another terminal. Stone age humans used finger length, step length, and so on to measure the size or displacement of an object. Nowadays, depending on how precise the measurement requires to be and the object’s size is measured, we use measuring devices for measurements like rulers and steel tape. Most people have used a ruler or tape measure to measure a particular distance or the size of an object. For more precise measurements of tiny objects, the development of measurement tools such as the Vernier caliper, which permits us to measure dimensions within 1/1000 of an inch. In the last few decades, electronic distance measuring instruments (EDMI) have been implemented that permit us to measure distances from a few feet to many miles with reasonable accuracy.

Question

A trapezoidal channel with a bottom width of B_o = 4 m and a sidewall slope of m = 2 carries a discharge of 8 m³/s. what is the critical depth of the channel? ( Show calculation and sketch)

a) 0.84 m

b) 0.72 m

c) 0.96 m

d) 0.66 m

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A very wide rectangular channel is designed to carry a discharge of 5 m³/s per metre 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 mm in the Strickler's equation instead of in metre. What should be the correct normal depth?