Question

Design a triangular shaped concrete lined channel to carry a discharge of 4733ft^3/mint at a slope of 1:4733. the side of slopes of a channel are 1.25:1. Take a value of coefficient of roughness as 0.018.

Answer #1

Design a concrete-lined canal to carry a discharge of 10,000
cfs. The canal has a Manning’s n = 0.015 and is to be laid on a
longitudinal slope of 0.0007. If the canal is designed to have a
trapezoidal cross section with a side slope of Z = 1.5 and a bottom
width/normal depth ratio of b/yn = 3.0, determine its required
bottom width, depth, and free board. What is the Froude number
(Fr)? Will the canal have a supercritical...

Design a trapezoidal concrete lined channel (n = 0.013) to
convey 3m3 /sec on a slope of 0.0004. Assume the use of a best
hydraulic section for the design. Express your answers to the
nearest mm.

A discharge of 4.25 m3 /s occurs within a trapezoidal channel
with a base width of 3m, 3:1 side slopes (i.e. Z = 3), a
longitudinal bed slope of 0.0009 m/m with a Manning’s roughness
coefficient of 0.025 (i.e. sand). State the normal flow depth (yn)
critical flow depth (yc) and the Froude Number of the flowing
water.

7. A) Find the depth of water flowing through a triangular
channel having a bed slope of 1 in 3500 and side slope of 1:1, when
it carries 1.2 m3/s. Take Manning’s Coefficient N = 0.014
B) For a most economical trapezoidal section of side slope 2h: 5V,
bed slope of 1 in 2000 and C = 50. Find the rate of flow if the
bottom width of the channel is 5 m.

3. A trapezoidal channel has a base width b = 8 ft and side
slopes 6H:1V. The frictional slope is Sf = 0.035 and the Manning
roughness coefficient is n = 0.014. Design a channel if channel
discharge is = 15.45 m3 /s using Mannings
equation. The farmer land is 3.482 acre with a
length of 951.43 ft. what is the best length for the grass
waterway?
Depth of channel, d=? (5).
Top width of the channel=? (3)
Freeboard of...

Design a gravel riprap-lined trapezoidal channel to carry 11.33
m3/s by considering the best hydraulic section with a slope S0 =
0.0016. Solve the problem using the tractive force method from the
textbook (Chapter 15.3.2). (Note: you need to find the gravel size
so that the design criteria are satisfied).

The discharge in a channel with bottom width 3 m is 12 m3 s–1.
If Manning’s n is 0.013 m-1/3 s and the streamwise slope is 1 in
200, find the normal depth if:
(a) the channel has vertical sides (i.e. rectangular
channel);
(b) the channel is trapezoidal with side slopes 2H:1V.
(Answer with steps plz)

A trapezoidal channel is needed for a location where the bed
slope is 0.008 ft/ft, discharge is 150 cfs, and the soil is
alluvial silt, colloidal. Design a trapezoidal channel with 3:1
side slopes that will meet the limiting velocity if the flow is
clear water. Use the information in the limiting velocity table
that was distributed in the April 22 class notes.
Gravity: g ൌ 32.2 ft/sec2 Unit weight of water: ? ൌ 62.4 ??/??ଷ
Density of water: ?...

A rectangular concrete channel
with n=0.013 is to be constructed on 0.5% slope:
1. Design for a flow rate of Q=18 m^3/s.
2. A 30 cm high, 5 m long broad crested weir is placed
in the channel. Calculate the depth upstream y1 and downstream y2
from the weir then get the head loss due to the hydraulic
jump

3. Design a trapezoidal channel that has gabion as the liner.
The flow is 120 cfs, slope is 8%, and side slope is 1:1.

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