An irrigation canal with trapezoidal cross-section has the following elements. Bottom width = 2.1 m depth of 1.0m, side slope of 1.5 horizontal to 1 vertical, slope of canal bed = 0.0001, coefficient of roughness = 0.02. The canal will serveclay-loam rice land.40. What is the hydraulic radius in meters?41. What is the mean velocity of the flow in m/s42. If the canal will serve a clay-loam rice land, determine the area in hectares it can serve if the duty of the water per hectareis 1.355 L/s

The objective of the question is to calculate the hydraulic radius, mean velocity of the flow, and…

Answered: An irrigation canal with trapezoidal…

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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The velocity of a trapezoidal canal with a bottom width of 3.2 m and side slopes of 3H:2V is 2.2 m/s. Calculate the following if the flow depth is 2.18 m and the channel bed slope is 5m per 3 kilometers. a. Flow rate, Q b. Roughness coefficient, n c. Shearing stress at the boundary of the canal, τ
A trapezoidal canal with a base of 2.2 m has sides sloping at 45⁰ with the horizontal. If water flows at a depth of 1.1 m, find the hydraulic radius.0.71 m0.62 m0.77 m0.68 m
Determine the slope of the channel bed, expressed in the unit of horizontal length to vertical length, given the cross-sectional area of 8 square meters, the wetted perimeter of 8 meters, a volumetric flow rate of 33.33 cubic meters per second, and a Manning's coefficient of 0.012, using the hydraulic principles and the Manning's equation for open channel flow.
A trapezoidal canal has bottom width of 2m and side slope of 2V:3H is laid on the slope of 2 meters per kilometer and has a roughness coefficient n=0.018. Evaluate the normal depth when the flow of waetr is 8.5m3/s.
The bottom width of a trapezoidal canal is 2.5m and its sides are both inclined at 60 degree with the horizontal. Water flows at a depth of 3m. Calculate the discharge of the slope of the canal is 0.0008 with a coefficient of roughness n=0.03
Determine the critical depth for best hydraulic cross-section of a trapezoidal channel that carries a flow of 6.5 m³/ s. Note: For Best Hydraulic Cross-Section; T = 2 z where T – top width and z-side length, and R = y/2.
Consider a farm irrigation ditch in a loam soil having the following dimensions: bottom width= 0.6 m, total depth, 0.5 m, side slopes= 1.5 horizontal to 1 vertical, and depth of water= 0.4 m. If the bottom of the ditch has a uniform slope of 2 m/km, and if the bottom & sides are kept smooth and free from weeds, what will be the mean velocity(m/s) of flow and discharge in m^3/s? Use n = 0.02. Find the shear stress at the watersurface, at half flow depth, and the canal bottom in N/m2 (or Pa). What is the shear velocity in m/sec?
There is a rectangular channel that will be excavated downstream of a dam after a stilling basin both with a width of 15 meters. The depth of the wather flow upstream of the dam is 4.27 meters and the discharge flow above the dam is 112.5 cubic meters per second. the channel wil be excavated in earth and n = .o25 and maintains a uniform flow depth under a subcritical flow regime. I need to determine 1. the bottom channel slope needed in the downstream channel and 2. the length of the stilling basin if the dissipation stucture starts at dissipated along the structure. The design should consider that the flow depth at the end of the still basin is similar to the flow depth in the channel. For a more realistic approach in the design, the head loss between the station upstream of the dam and the station at the beginning of the still basin is 10% of the velocity head observed at the beginning of the basin
The bed width of a trapezoidal channel is 5.0 m, 5,= 0.0004, the side slope is m = 2 horizontal: 1 vertical, and the n value is 0.02: y = 3.0 m is the normal depth of flow. Calculate and plot the resulting gradually varied flow using the direct step method, when the channel flows into a pool at the downstream end and the pool elevation is 1.25 m higher than the channel bed elevation at the downstream end. Estimate the length of the gradually varied flow that the pool elevation produces.
In a rectangular canal with energy height E= 3,5 m, the floor width is given as B= 5,6 m. Neglecting the effects of friction; a) Find the critical depth. b) Calculate the maximum flow that can pass at the given energy level. c) calculate the flow that can pass at a depth of h=2,3 m d) Determine at what depths and regimes the flow of Q= 27 m^3/sec flows. e) Draw the Koch parabola using the data you have obtained.
A channel having a cross-section shown below has a flow rate of 0.023 m^3/s. Compute the hydraulic radius if f=0.022
Find the discharge through a trapezoidal channel of 8 m wide and side slopes of 1 horizontal to 3 vertical. The depth of flow is 2.4 m and Chezy’s constant C = 55. The slope of bed of the channel is 1 in 4000

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