Question
In: Civil Engineering
A trapezoidal channel carrying 280 cfs has a bottom width of 12 ft, side slope of...
A trapezoidal channel carrying 280 cfs has a bottom width of 12 ft, side slope of 2 and a longitudinal bottom slope of 0.001. The critical depth is 2.25 ft and the normal depth is 2.78. The flow depth at the downstream end of this channel is 3.12 ft. Determine which of the statements below is correct.
Select one:
a.
The flow depth decreases in the flow direction.
b.
None of the above.
c.
A flow depth of 2.55 ft will not occur in this channel.
d.
If the channel is very long, a hydraulic jump will occur.
Solutions
Ally Wells answered 7 months agoRelated Solutions
A trapezoidal channel has a bottom width of 3.25 m and sides with a slope of...
A trapezoidal channel has a bottom width of 3.25 m and sides
with a slope of 1 vertical
to 1.5 horizontal. The slope of the bed is 1 in 2000 and the
depth of water is 1.2 m.
a) Using the Manning Formula with n = 0.025, calculate the velocity
and
the discharge rate of the flow.
b) Calculate the Chezy number for the channel and use that to
re- calculate the velocity and the discharge rate of the flow....
For a trapezoidal-shaped, concrete-finished gravel bottom channel along a 0.5% slope, with a bottom width of...
For a trapezoidal-shaped, concrete-finished gravel bottom
channel along a 0.5% slope, with a bottom width of 8 feet, a top
width of 32 feet, and side slopes of 4:1, calculate:
a. the channel’s full capacity discharge,
b. velocity at full capacity discharge, and
c. discharge and velocity when stream flow is 0.5 feet from the top
of the channel.
B. A trapezoidal channel with a bottom width of 4 m and side slopes 4H: 1V...
B. A trapezoidal channel with a bottom width of 4 m and side
slopes 4H: 1V carries a discharge of 30 m3 /s. The channel has bed
slope= 0.1 % and manning roughness coefficient = 0.015. Determine
the following:
i. the minimum specific energy
ii. the normal depth iii. the critical slope
iv. state of the flow in the channel
A trapezoidal earthen channel that is straight and in good condition with a bottom width of...
A trapezoidal earthen channel that is straight and in good
condition with a bottom width of 5.0 ft with side slopes on the
left side of 2H to 1V and on the right side of 3H to 1V (two
different side slopes) carries a discharge of 200 cfs for a 15-year
design storm. The channel slope is 0.001 ft/ft. Determine the
following: a) Normal Depth b) Critical Depth c) Critical Slope d)
Froude number f) What is the flow type?
Compute the normal depth (y) in a trapezoidal channel having a bottom-width 10 m, side slopes...
Compute the normal depth (y) in a trapezoidal channel
having a bottom-width 10 m, side slopes 1H to 1V and carrying a
flow of 30 m3/s. The slope of the channel bottom is
So = 0.001 and n = 0.013.
A.
B.
C.
D.
Question 1 Calculate the Hydraulic Radius for a trapezoidal channel that has a bottom width of...
Question 1
Calculate the Hydraulic Radius for a trapezoidal channel that
has a bottom width of 4 feet, side slopes, s = 20, a
Manning’s n value of 0.012, and bottom slope of 1.5%, and
a depth of flow of 1 foot.
a.
0.54 ft
b.
1.3 ft
c.
2.1 ft
d.
2.9 ft
e.
3.7 ft
2 points
Question 2
A trapezoidal channel that has a bottom width of 4 feet, side
slopes 2:1 (H:V) and bottom slope of...
A trapezoidal channel having bottom width 6m ,side slopes 2 horizontal to 1 vertical ,Mannings n=...
A trapezoidal channel having bottom width 6m ,side slopes 2
horizontal to 1 vertical ,Mannings n= 0.025 and bottom slope 0.016
,carries a discharge of 10 m3/sec . Compute the back water profile
created by the dam which backs up the water to a depth of 2.0 m
immediately behind the dam ((Direct method if it is possible))
A trapezoidal channel having bottom width 6m ,side slopes 2 horizontal to 1 vertical ,Manning’s n=...
A trapezoidal channel having bottom width 6m ,side slopes 2
horizontal to 1 vertical ,Manning’s n= 0.025 and bottom slope 0.016
,carries a discharge of 10 m3/sec . Compute the back
water profile created by the dam which backs up the water to a
depth of (3) immediately behind the
dam.
[
5 Marks ]
( THIS SHOULD BE DONE USING
EXCEL SHEET )
A trapezoidal channel has a base of 25 ft and side-slopes of 1v:3h. It has a...
A trapezoidal channel has a base of 25 ft and side-slopes of
1v:3h. It has a manning n = 0.022 and α = 1.22. The slope of the
channel is 0.323%. What are the nominal and critical
depths if the flow is 500 cfs? What type of profile will the
channel have if the depth of flow entering the channel is
1.2ft?
A trapezoidal channel has a base of 25 ft and side-slopes of 1v:3h. It has a...
A trapezoidal channel has a base of 25
ft and side-slopes of 1v:3h. It has a manning n = 0.022 and α =
1.22. The slope of the channel is 0.323%. What are the
nominal and critical depths if the flow is 500 cfs? What type of
profile will the channel have if the depth of flow entering the
channel is 1.2ft?
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