Question
In: Civil Engineering
A rectangular laboratory channel has a bottom width of 6.0 in, a Manning roughness coefficient of...
A rectangular laboratory channel has a bottom width of 6.0 in, a Manning roughness coefficient of n = 0.010, longitudinal slope of 2% (So = 0.02). The discharge is 180 gpm. Assume α = 1. The water depth is 2.5 inches at Point A, and 3.0 inches at Point B. The normal depth is 2.066 in and critical depth is 3.228 in.
(a) Use the direct step method with one step (Δy = 0.5 in) to determine the distance from Point A to Point B. Do this by hand, using a calculator. Show all work.
(b) Which point is upstream, A or B? Explain the reason for this answer.
Solutions
Ally Wells answered 11 months agoRelated Solutions
A rectangular channel 2 m wide has a bottom slope of 0.01 and a roughness coefficient...
A rectangular channel 2 m wide has a bottom slope of
0.01 and a roughness
coefficient of 0.017. A sluice gate 2 m wide is located in the
channel. The sluice
gate has a contraction coefficient of 0.61 and a discharge
coefficient of 0.58. The
depth of water just upstream from the gate is 2 m. The depth of
water just
downstream from the gate is 0.5 m. Determine how far upstream from
the gate
the depth of water will...
A trapezoidal channel that has a 15 foot bottom width, Manning’s roughness coefficient of 0.033, bed...
A trapezoidal channel that has a 15 foot bottom width,
Manning’s roughness coefficient of 0.033, bed slope of 0.0021
ft/ft, symmetrical side slopes of 4H:1V (s = 4), and conveys 250
cfs. It is dammed up to a depth of 4 feet. How far back upstream
will it take for the M1 curve to reach normal depth?
a. 1,430 ft.
b. 1,894 ft.
c. 2,302 ft.
d. 2,934 ft.
e. 3,486 ft.
Hydraulic engineering: A trapezoidal channel that has a 15 foot bottom width, Manning’s roughness coefficient of...
Hydraulic engineering:
A trapezoidal channel that has a 15 foot bottom width, Manning’s
roughness coefficient of 0.033, bed slope of 0.0021 ft/ft,
symmetrical side slopes of 4H:1V (s = 4), and conveys 250 cfs. It
is dammed up to a depth of 4 feet. How far back upstream will it
take for the M1 curve to reach normal depth?
a. 1,430 ft.
b. 1,894 ft.
c. 2,302 ft.
d. 2,934 ft.
e. 3,486 ft.
Consider a rectangular channel with a variable width b and horizontal channel bottom, a) Obtain the...
Consider a rectangular channel with a variable width b and
horizontal channel bottom, a) Obtain the equation of water surface
profile (dy/dx) as function of Froude number and channel width
change (db/dx) in a channel transition assuming that over a short
distance x, the energy losses can be neglected. b) Using the
equation you have obtained, draw the water surface profile if flow
is subcritical and if there is an enlargement in channel cross
section b in downstream section (2)...
Consider a rectangular channel with a variable width b and horizontal channel bottom, a) Obtain the...
Consider a rectangular channel with a variable width b and
horizontal channel bottom, a) Obtain the equation of water surface
profile (dy/dx) as function of Froude number and channel width
change (db/dx) in a channel transition assuming that over a short
distance x, the energy losses can be neglected. b) Using the
equation you have obtained, draw the water surface profile if flow
is subcritical and if there is an enlargement in channel cross
section b in downstream section (2)...
Consider a rectangular channel with a variable width b and horizontal channel bottom, a) Obtain the...
Consider a rectangular channel with a variable width b and
horizontal channel bottom, a) Obtain the equation of water surface
profile (dy/dx) as function of Froude number and channel width
change (db/dx) in a channel transition assuming that over a short
distance x, the energy losses can be neglected. b) Using the
equation you have obtained, draw the water surface profile if flow
is subcritical and if there is an enlargement in channel cross
section b in downstream section (2)...
A rectangular channel of bottom width B = 7 m carries an average discharge of Q...
A rectangular channel of bottom width B = 7 m carries an average
discharge of Q = 8 m3/s. There are two successive long
reaches. The first reach has s01=0.015 and
n1=0.010; and the second reach has s02=0.0017
and n2=0.021. Classify the slopes.
A a = 0.55 (m) × b = 0.3 (m) concrete box with Manning roughness coefficient...
A a = 0.55 (m) × b = 0.3 (m) concrete box with
Manning roughness coefficient of n = 0.016 is to
be placed under a roadway. During the T = 100
years design storm, it is expected that water will pond behind the
culvert to a height h = 0.2 (m) above the crown of
the culvert. If the culvert entrance is to be rounded with the exit
loss coefficient of Ke = 0.2 and discharge
coefficient of Cd...
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....
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...
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