Design a channel to carry a flow of 6 m3/s. The channel will be excavated through...
Unlined channel to be excavated in stiff clay to convey 9 m3/s. The slope is 0.0028. Design the dimensions.
2. 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.
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
15. A rectangular open concrete (n-0.012) channel is to be designed to carry a flow of 5 m/s. The slope is 0.003 m/m and the bottom width of the channel is 5 meters. Determine the normal depth that will occur in this channel. (A) 0,4 m (B) 0.47 m (C) 0.5 m (D) 0.77 m
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 trapezoidal channel with bottom width of 10 m and side slopes of 1V:1.5H is carrying a flow of 80 m3/s. The channel bottom slope is 0.002 and n = 0.015. A dam is planned that will raise the flow depth to 10 m. Compute the flow depth by using standard step method in the channel 250, 500, and 750 m upstream of the dam.
Determine the flow velocity (ft/s) a most hydraulically efficient trapezoidal channel (m=2) would be designed to carry water on a slope of 0.0015‐m/m excavated in coarse gravel with D75 of 1.2‐in (n=0.03). Consider the angle of repose for the gravel to be 40o and the critical shear stress of the coarse gravel to be 0.456lb/ft2.
(b) It is required to design a new canal to carry a flow due to a heavy storm runoff in a new township to mitigate flash flood problem. The canal is to carry 40 mº/s of water, and to be cut in an alluvial soil of median size 1.0 mm. The canal is a trapezoidal shape with side slope 0.5 H: 1 V. Use Lacey theory to design the canal. Also calculate the Manning's n.
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).
water flows at a rate of 20 m3/s through a rectangular channel 4.0 m wide from a "steep slope" to a 'mild slope", creating a hydraulic jump. The upstream depth of flow is 1.20 m Find the following: (a) the downstream depth of flow, (b) the energy loss in the jump, anid (c) the upstream and downstream velocities 2)