rectangular channel 4.61 m. wide by 1.48 m. deep is lined with a smooth stone (n = 0.019), well laid, and has a hydraulic slope of 0.018. what would be the base (in meters) considering the most efficient proportion of the rectangular open channel?
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a rectangular channel 4.61 m. wide by 1.48 m. deep is lined with a smooth stone (n = 0.019), well laid, and has a hydraulic slope of 0.018. what would be the base (in meters) considering the most efficient proportion of the rectangular open channel?
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- A trapezoidal channel having side slopes of 2 3 horizontal and 1 vertical discharges 14.35 m/s of water at a velocity of 1.0m/s. The channel lining has a roughness coefficient, n = 0.013. Find the dimensions of the channel for the least expenditure of energy. Find also the slope of the bedWhat is the hydraulic radius of a trapezoidal section with a bottom width of Bo = 4 m, sidewall slope of m = 2, and water depth of y = 1.83 m? a) 0.85 b) 1.15 c) 1.35 d) 1.5516. The side slope of the section is 2.5:1. Determine the value of x. 25 a) 7.5 m c) 10 m 17. Determine y in item 16. a) 7.5 m c) 10 m 18. The borrow pit divided into grids is to be excavated into depths indicated as a source for embankment materials. Determine the volume of b) 13.5 m d) 12 m b) 13.5 m d) 12 m materials to be excavated. A(24.8) B(22.3) C/20 2) 20 20 20 D(21.5) E(19.3) F(21.9) 20 3) G(19 2) H(16.3) I(17.9) GRID SHOWNG THE HEIGHTS OF EXCAVATION a) 487300 m c) 320330 m b) 33230 m d) 32330 m?
- A rectangular channel 5.2 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n = 0.013. 1. What is its yield in m³/s? a. 16.63 b. 12.47 c. 19.12 d. 14.14 2. What savings in earth excavation could be realized by using most economical proportion? a. 0.85 cum b. 0.96 cum c. 1.05 cum d. 0.92 cum 3. What savings in lining per meter length could be realized by using most economical proportion? a. 0.8 m b. 0.944 m c. 1.13 m d. 1.04 mWhat is the area of cut in square metre? what is the average cut in metres? what is the volume of cut in cubic metres? what is the area of the fill in metre square? what is the average fill? what is volume of full in cubic metres? QUESTION 3. Determine the fill and cut volumes of the 10 m by 10 m grid below. A B 0.7 F 0.7 C 0.8 F 0.8 C 2 1 2The figure shows a weir, the base of which is 6m below the ground. The necessary flow net has also been drawn assuming Kx = Kv = K. K = 0.005 m⁄sec. Compute the following: rate of seepage through the foundation in liters/sec. uplift pressure at“f”. uplift force per unit length measured along the axis of the
- A triangular channel has a 40-degree walls with respect to the horizontal. A smooth asphalt (n = 0.014) lining is used and the channel slopes at 2.0%. If the water speed is measured at 1.6 m^3/s, what is the water depth in the channel?The figure shows a weir, the base of which is 6m below the ground. The necessary flow net has also been drawn, assuming Kx = Kv = K. K = 0.005 m⁄sec. Compute the following: a. rate of seepage through the foundation in liters/sec. b. uplift pressure at“f”. c. uplift force per unit length measured along the axis of theHw Trapezoidal section Q = 120 m³/s S = 12 cm/km , Side slope 2:1, n= 0.0182 Compare the dimensions for two cases: 1. B/y = 4 , %3D 2. best hydraulic section
- A rectangular channel 5.8 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n = 0.013. 1. What is its yield in cubic meter per second? 2. What savings in earth excavation could be realized by using most economical proportion? 3. What savings in lining per meter length could be realized by using most economical proportion?Prob.5. A new canal is excavated to a aepth of 5 m below ground level, through a soil having the following characteristics - Cu=15 kN/m², p=15%, e = 0.78 and G = 2.72. The slope of banks is 1 in 1. Calculate the factor of safety with respect to cohesion when the canal runs full (Sn = 0.083). If it is suddenly and completely emptied (Sn = 0.122), what will be the factor of safety ?A rectangular channel 5.8 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n = 0.013. (a) What is its yield in cubic meter per second? (b) What savings in earth excavation could be realized by using most economical proportion? (c) What savings in lining per meter length could be realized by using most economical proportion?