Va 2:(A) On testing the water content for asoil Sample, we have got the followpng date wI = 58.7 gm wie lo5.| gm , wz = lo 8.7gm
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- pesign a rectangular sedimentation tank to treat 120000 m3/day flows. ssume the SOR=30 m/day, L= 32 m, LW-4:1. D.T-3hr?Q#4: Design an irrigation channel to carry 35.5cumecs of discharge with B/D ratio as 2.38 The critical velocity ratio is 1.2. Assume a suitable value of kutter’srugosity coefficient and use kennedy’s method? Subject: Irrigation Engineering Note: Write the answer in word format.Q#4: Design an irrigation channel to carry 35.5 cumecs of discharge with B/D ratio as 2.38 The critical velocity ratio is 1.2. Assume a suitable value of kutter’s rugosity coefficient and use kennedy’s method?
- Q In a cell with upper and lower bounds that are 1.4 m and 1.2 m above the datum, determine the average water content. The following criteria apply to it: n =1.5, α = 0.06, zt = 2 m, zWT = 1 m, θs = 0.45, and θr = 0.08.5. The coefficient of permeability of a sand at a void ratio of 0.62 is 0.03 cm/sec. Estimate the coefficient of permeability at a void ratio of 0.48. Using Casagandre equation Using Kozeny-Carman equation Find the difference in the rate of flow using the results of “a” and “b” if i = 0.70 and A = 0.6 m2.a) With the aid of relevant equations explain what is meant by "settling ratio" b) Explain the difference between free settling and hindered settling c) Why is sizing helpful for gravity concentrator feed to have a narrow particle size distribution? d) The shaking table is frequently used for final concentration of gold. Describe this unit showing how operating variables can be adjusted to optimise its performance
- A concrete dam retains water to a height of 9 m. It has rows of sheet piling at both heeland toe which extend half way down to an impervious stratum. From a flow net sketchedon a transformed section, it is found that there are four flow channels and sixteen headdrops. The average horizontal and vertical permeabilities of the soil are 6 × 10^–3 mm/sand 2 × 10^–3 mm/s, respectively. What is the seepage in cubic meter per day, if the lengthof the dam is 150 meters?SHOW COMPLETE SOLUTION PLS VALUE: Y = 25A steep rectangular channel is to carry flow rate of 1.90 m3/s wirh a slope of 0.01 and roughness coefficient of 0.011, for a minimum area of the material to use, compute: Depth if the channel in m 0.15 1.51 1.15 0.51 Width of the channel in m .30 1.02 3.02 2.30 Area of the steel material to be used if the channel is 3m 4.56 0.52 0.45 6.12
- A 2 ft diameter well penetrates vertically through a confined aquifer 50 ft thick. Whenthe well is pumped at 500 gpm in 1 day, the drawdown in a well 50 ft away is 10 ft andin another well 100 ft away is 3 ft. The storativity of aquifer is 0.0005. What is the valuefor transmissivity and drawdown? Note; the piezometric head is 100ft from datum.Combination of thiem & thies equationH2 = 0.3’ h = 1.25’ H1 = 0.2’ d = 1.5” H = 0.5’ D = 4” Ksand = 0.000075 ft/min Ksilt = 0.0038 ft/min Determine: Determine the total flow of water q. Find the equivalent permeability for the soil.A pumping well was drilled penetrating straight into an unconfined aquifer withthe thickness of 42 m. The distance of pumping well with first extraction welland second extraction well are 20 and 180 m, respectively. Meanwhile, thedrawdown for the first extraction well is 4.5 m, and the second extraction wellis 1.5 m. The constant pumping rate has been set at 0.09 m3/s. Sketch the cross section of unconfined aquifer system and label the values. ? .