11.26. A trapezoidal channel is designed to carry a dischargeof 1800 cfs at normal depth on a slope of 0.0005 ft/ft.The side slopes of the channel must be 1.5 H/1Vand the Manning n value is 0.035. If the channel isto be a regular earthen canal in good condition, whatshould be its dimensions for maximunm hydraulicefficiency?

Given discharge Q=1800cfs slope S=0.0005 Side slopes 1.5H/1V n value =0.035

11.26. A trapezoidal channel is designed to carry a discharge of 1800 cfs at normal depth on a slope of 0.0005 ft/ft. The side slopes of the channel must be 1.5 H/iv and the Manning n value is 0.035. If the channel is to be a regular earthen canal in good condition, what should be its dimensions for maximunm hydraulic efficiency?

11.26. A trapezoidal channel is designed to carry a discharge of 1800 cfs at normal depth on a slope of 0.0005 ft/ft. The side slopes of the channel must be 1.5 H/iv and the Manning n value is 0.035. If the channel is to be a regular earthen canal in good condition, what should be its dimensions for maximunm hydraulic efficiency?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A trapezoidal channel has a bottom width of 5.0m and its sideslopes at an angle of 45o. If the depth of flow is 2.0 m calculatethe area of flow A, the wetted perimeter P, and the hydraulicradius R. If the flow is expected to be critical calculate thedischarge in the channel.
A trapezoidal channel lined with grass (n=0.027) has a bottom widith of 4.25ft, side slopes of 2 horizontal to 1 vertical, and a slope of 1.1%. Water is flowing at a depth of 2.35ft. What is the discharge and the velocity?
4. A trapezoidal channel with 3 meters bottom width, side slope 2H:1V, channel gradient of 0.002, and n= 0.025, carries a discharge of 200m^3/min. Compute the normal depth and velocity.
Q1 Determine the floew in a long convcrete lined rectangula channel of 12M wide and 40M deep,with a bed slope of 1:400 and with a Manning ,n of 0.016.If the flow is halved,what is its depth. Q2. Determine the flow depth ina long length of lined trapezoid channel of base width 3.5M and side slope of 1:1,when the flow rate is 20m3/s.Manning'n+0.016,assuming the channel can be considered as wide.
4. A trapezoidal channel with 3 meters bottom width, side slope 2H:1V, channel gradient of 0.002, and n = 0.025, carries a discharge of 200 m3 /min. Compute the normal depth and velocity.
A trapezoidal canal with side slope of 2H to 1V has a base width of 4m. What is the hydraulic radius when the depth of flow is 1.5m?
A trapezoidal channel is 6.0m wide and has side slope of 0.5 H: 1 V. If the bed slope of the channel is 0.0004 and the Manning's n=0.02, find the discharge which can make the channel a hydraulically efficient section.
Discharge in a concrete channel with bottom width of 3m is 10 cumecs. Bed slope of a givenchannel is equal to 1 in571. Solve forthe normal, critical and hydraulic depths offlowif[CLO2](10)a)the channel has verticalsidesb)the channel is trapezoidal with 3H:2Vc)the channel is triangular with apex angle equal to1000
Design a trapezoidal open channel (n=0.014) that is anticipated to convey 20cumecs of water. The slope of the channel bed is 0.0015. Solve the hydraulic radius of the designed section.
What flow can be exerted in a 1.2m wide rectangular, cement lined channel (n=0.015)laid on a slope of 4m in 10km, if the water flows 0.6m deep?
Design a semi-circular open channel (n=0.014) that is anticipated to convey 25cumecs of water. The slope of the channel bed is 0.0015. Solve the hydraulic depth of the designed section.
A rectangular channel 6.1 m wide with n = 0.014 is laid on a slope of 0.001 and terminates in a free overfall. Upstream 300 m from the overfall is a sluice gate that produces a depth of 0.47 m immediately downstream. (a) For a discharge of 17.0 m3 /s, draw the NDL. CDL and the water surface profile that occurs in the channel. Do you expect a hydraulic jump to occur in the channel? (b) From the overfall up to a location where the depth is 1.2 m, compute and plot the water surface profile using the direct step method. please solve it in a simple way