QUESTION 1 A trapezoidal, concrete lined channel is to be constructed to carry floodwater. The slope...
QUESTION 1
A trapezoidal, concrete lined channel is to be constructed to carry floodwater. The slope of the ground surface is 1 in 500. The design discharge is 10 m3/s. Calculate the dimensions of the trapezoidal channel that will minimize excavation and results in the optimum hydraulic section. (Take Manning’s n = 0.015).
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QUESTION 1
A trapezoidal, concrete lined channel is to be constructed to
carry floodwater. The slope...
Determine the cross section of the greatest hydraulic efficiency for a trapezoidal channel with side slope...
Determine the cross section of the greatest hydraulic efficiency for a trapezoidal channel with side slope of 1 vertical to 2 horizontal if the design discharge is 250 m3/s. The channel slope is 0.001 and Manning’s roughness factor is 0.020.
Determine the cross-section of the greatest hydraulic efficiency for a trapezoidal channel with side slope of...
Determine the cross-section of the greatest hydraulic efficiency for a trapezoidal channel with side slope of 1 vertical to 2 horizontal if the design discharge is 10 m3/s. The channel slope is 0.001 and Manning’s roughness factor is 0.020.
A 2.44 wide channel with a bed slope of 0.0004 has a depth of flow of...
A 2.44 wide channel with a bed slope of 0.0004 has a depth of flow of 0.61 m. (a) Determine the discharge of the channel. The manning coefficient is 0.015. (b) Determine the normal depth if the channel has a flow rate of 2.85 m3/s. (c) Determine the cross section of greatest hydraulic efficiency for a trapezoidal channel if the design discharge is 10 m3/s, the channel slope is 0.0052 and manning’s n = 0.025.
A concrete-lined (smooth) trapezoidal channel with a bottom width of 10 ft and side slope 2...
A concrete-lined (smooth) trapezoidal channel with a bottom width of 10 ft and side slope 2 horizontal to 1 vertical has a slope 0,002 and is designed for a discharge of 160 cts. Determine the water depth in the channel,
Question 6 A concrete-lined trapezoidal channel with uniform flow has a normal depth of 1.5 m. The base width is 4 m and the side slopes are equal at 1 vertical to 2 horizontal. Mannin‘s n-0015....
Question 6 A concrete-lined trapezoidal channel with uniform flow has a normal depth of 1.5 m. The base width is 4 m and the side slopes are equal at 1 vertical to 2 horizontal. Mannin‘s n-0015. The bed slope 0.001 Compute the mean velocity and discharge. If the above channel were to be designed for flooding, it may have a section like in Figure below 8 m 8 m 4 m When the flow goes over the top of the...
A trapezoidal channel has a bottom width, b, of 10.0 m and a side slope ratio...
A trapezoidal channel has a bottom width, b, of 10.0 m and a side slope ratio of 3:1. The Manning’s n of the channel is 0.025, and it is laid on a slope of 0.001. If the water depth is 2 m at the downstream end, write and submit an R script to compute the water surface profile for a discharge of 30 m3 /s. Also submit a plot of the water profile in elevation (m) for 1000 m channel...
Design a trapezoidal channel that is capable of conveying 45 cfs from an elevation of 5000...
Design a trapezoidal channel that is capable of conveying 45 cfs from an elevation of 5000 feet to an elevation of 4500 feet. The total length from one point to another is 15 miles. The channel is to be rough concrete lined (n = 0.02). Try to minimize the amount of excavation required for the channel. If excavation costs are $5/cubic yard, determine the excavation costs. You should try to find the most efficient channel section. Use the area of...
A trapezoidal channel has a side slope of 1:1 and a bed width of 6.0 m....
A trapezoidal channel has a side slope of 1:1 and a bed width of 6.0 m. A hydraulic jump with a height of 0.5 m (i.e. the difference between water surface elevation upstream and downstream of the jump) is encountered in the channel. If the channel has a discharge of 10 m3/s, determine the critical depth in the channel. Plot the momentum curve and determine the flow depth immediately upstream and downstream of the jump.
A trapezoidal channel to be excavated into the ground will be sized to carry Q-200 cfs...
A trapezoidal channel to be excavated into the ground will be sized to carry Q-200 cfs at normal flow. The bottom slope is So 0.0004 and the Manning roughness factor is n= 0.020. The land surface also has a slope of 0.0004. If cost of excavation is the main concern, which of the alternatives listed below is the best? Neglect free board. b (ft) 10 10 10 rn 1.5 2.0 2.5
Design a concrete trapezoidal channel with best hydraulic cross-section that can handle the flow from the...
Design a concrete trapezoidal channel with best hydraulic cross-section that can handle the flow from the development above. The slope of the channel is 0.05. Describe the flow condition in the channel. 3. art ii-open books and notes (20 points each - use NRCS methods to solve these problems) A proposed 40 ha development in Jackson, Mississippi, includes 10 ha parking lot, 10 ha buildings, and the rest is grass area which includes 1 ha detention pond. The runoff from...
A concrete-lined (smooth) trapezoidal channel with a bottom width of 10 ft and side slope 2 horizontal to 1 vertical has a slope 0,002 and is designed for a discharge of 160 cts. Determine the water depth in the channel,
Question 6 A concrete-lined trapezoidal channel with uniform flow has a normal depth of 1.5 m. The base width is 4 m and the side slopes are equal at 1 vertical to 2 horizontal. Mannin‘s n-0015. The bed slope 0.001 Compute the mean velocity and discharge. If the above channel were to be designed for flooding, it may have a section like in Figure below 8 m 8 m 4 m When the flow goes over the top of the...
A trapezoidal channel to be excavated into the ground will be sized to carry Q-200 cfs at normal flow. The bottom slope is So 0.0004 and the Manning roughness factor is n= 0.020. The land surface also has a slope of 0.0004. If cost of excavation is the main concern, which of the alternatives listed below is the best? Neglect free board. b (ft) 10 10 10 rn 1.5 2.0 2.5
Design a concrete trapezoidal channel with best hydraulic cross-section that can handle the flow from the development above. The slope of the channel is 0.05. Describe the flow condition in the channel. 3. art ii-open books and notes (20 points each - use NRCS methods to solve these problems) A proposed 40 ha development in Jackson, Mississippi, includes 10 ha parking lot, 10 ha buildings, and the rest is grass area which includes 1 ha detention pond. The runoff from...
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