Unlined channel to be excavated in stiff clay to convey 9 m3/s. The slope is 0.0028. Design the dimensions.
Unlined channel to be excavated in stiff clay to convey 9 m3/s. The slope is 0.0028....
Design a channel to carry a flow of 6 m3/s. The channel will be excavated through loose sandy soil at a channel bottom slope of 0.003 (assume n 0.025)
Determine the channel slope for a 1 m diameter circular pipe running partially full at 0.7 m and is supposed to convey a flow of 2.3 m3 /s. Use Manning’s n = 0.02.
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.
Figure 3 A cutting 9 m deep is to be excavated in a saturated clay of unit weight of 19 kN/m2. The relevant shear strength parameters are Cu 30 kPa and Qu=0. A hard stratum underlies the clay at a depth of 11 m below the ground level. (a) Determine the slope angle at which failure would occur. (b) What is the allowable slope angle if the factor of safety FS-1.5 4
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).
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.
Water flows at 11 m3/s in a rectangular channel of width 5 m. The slope of the channel is 0.001 and the Manning roughness coefficient is equal to 0.035. If the depth of flow at a selected section is 2 m, calculate the upstream depth at 500 m from the selected section using the standard step method
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 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 8 m wide rectangular channel is carrying water at 180 m3/s. The channel is constructed of concrete (Manning's N = 0.013) and is laid at a slope of 0.28 %. Find the normal depth