Design a trapezoidal channel to pass a discharge of 10m3/s and the channel will be excavated...

Design a trapezoidal channel to pass a discharge of 10m3/s and the channel will be excavated through rock by blasting. The topography in the area is such that a bottom slope of 1 in 4000 will be suitable. Assume that n = 0.030 and select a value for the side slope, Z, as 1 horizontal to 4 verticals. Sketch the diagram for all calculated dimensions.

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Ally Wells answered 1 year ago

Unlined trapezoidal channel to be excavated in fine sand soil to convey 350 ft3/s. The slope...

Unlined trapezoidal channel to be excavated in fine sand soil to convey 350 ft3/s. The slope is 0.0025. Determine the width of the bottom and the depth of water of the cross section of the channel b and y.

3. a) A trapezoidal open channel is being designed to convey a discharge of 11.0 m3/sec....

3. a) A trapezoidal open channel is being designed to convey a discharge of 11.0 m3/sec. The channel will be excavated into clay and will have the following properties: side slope of m = 1.5, the bottom slope of So = 0.001, Manning’s n = 0.022, and bottom width b = 1.0 m. For these conditions is there a risk of channel erosion? b) The earth-works contractor that will carry out the excavation suggests that the side slope angle can...

Design a canal having a trapezoidal cross section to carry a design discharge of irrigation water...

Design a canal having a trapezoidal cross section to carry a design discharge of irrigation water of 900 cfs. The slope of the canal is to be 0.002. The canal is to be lined with concrete, and it is to have the best hydraulic section for the design flow. Adopt a Manning’s roughness coefficient ? for lined canals under (troweled concrete) ? = 0.012.

You are to design a most-efficient trapezoidal channel to carry a flow of 1300 cfs. The...

You are to design a most-efficient trapezoidal channel to carry a flow of 1300 cfs. The channel has a bed slope of 0.003 ft/ft. You can select to design the channel with either 1-in or 2-in gravel rip-rap. Which of these two materials would you choose? Support your answer.

A rectangular channel 10m wide carries a discharge of 40m3 /s. If at a section in...

A rectangular channel 10m wide carries a discharge of 40m3 /s. If at a section in this channel the depth is 1.5m, how far (upstream or downstream) from this section will the depth be 2.0m.Take So=0.00009and manning’s constant n=0.017.

A rectangular channel with a base width of 3 m carries a discharge of 6 m3/s...

A rectangular channel with a base width of 3 m carries a discharge of 6 m3/s at a depth of 1.1 m. At downstream, there is a gradual rising of a channel bed of 0.1 m. a) Plot the specific energy curve from y = 0.4 m to 1.3 m in a step 0.1 m and from the curve, determine the depth of flow at the downstream section. Label the graph and show your working answers clearly on the graph....

Design a canal culvert 75 metres long to pass a normal full supply discharge of 4...

Design a canal culvert 75 metres long to pass a normal full supply discharge of 4 m3/s with 0.3m head loss. The upstream and downstream canal parameters are as given in the following. Ymax=1.40 m Vmax=0.830 m/s Ymin=1.05 m V min =0.74 m/s At 5 m3/s, the normal upstream depth of flow = 1.28 m, assume a square box section DxD is to be used with a rounded entrance so that K1=0.30. if R = D/4 for a single box...

13.(LAB) A discharge of 25 m3/s is passing in a rectangular channel of bed width 8.0...

13.(LAB) A discharge of 25 m3/s is passing in a rectangular channel of bed width 8.0 meters and water depth 3.0 meters. The channel bed width is gradually contracted from 8.0 meters at section (1) to 6.0 meters at section (2). In the contraction zone, a smooth hump is placed in the channel in which the bed level is gradually increased by 1.00 m. Determine: (i) The change in water levels, (ii).The minimum height of hump so that y2 =...

Design an overflow spillway profile for a design discharge of 1200 m3/s. The upstream water surface...

Design an overflow spillway profile for a design discharge of 1200 m3/s. The upstream water surface level is at an elevation of 220 m and the upstream channel floor is at 180 m. The spillway, having a vertical face, is 40 m long.

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?

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