Three piezometers have been installed in the onfined aquifer having a uniform thickness of .6 m. and a hydraulic conductivity of x 104 m/s. B 140m 6lm S10m 235m EL 122.92m El 122.03m E 120 Slm
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Three piezometers have been installed in the confined aquifer having a uniform thickness of 4.6 m. and hydraulic conductivity of 2 x 104 m/s.
a) Compute the hydraulic grądient.
b) Compute the transmissivity in m2/day.
c) Compute the flow rate per unit width of the aquifer in liters/day.
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- Direction: Choose A- When both statements are true; B - When both statements are false; C- When the first statement is true and the second statement is false; D- When the first statement is false and the second statement is true. First Statement: The piezometric surface of an aquifer confined by an aquiclude is higher than that of an unconfined. Second Statement: Hydraulic conductivity is a measure of permeability or impermeability of a geologic unit. OA B. D.Three piezometers have been installed in the confined aquifer having a uniform thickness of 4.6 m. and a hydraulic conductivity of 2 x 104 m/s. Be 140m 61m S10m 235m C EL 12292m EL 122.03m E 120.5 Im Aquiclude Aquifer 6m Aquiclude a) Compute the hydraulic gredient. b) Compute the transmissivity in m2/day. c) Compute the flow rate per unit width of the aquifer in liters/day.Situation XX: In the figure shown, z, = 4 m, length of pipe from the reservoir to the pump is 120 %3D m, from the pump to the nozzle is 1000 m. The diameters of pipes are 0.60 and 0.45 m respectively. The gage pressure at B (the suction side of the pump) is -64 KPa. Neglect minor losses. В C P. 0.45 m diam. LCD = 1000 m %3D Zp = 4 m f = 0.02 0.60 m diam. LAB = 120 m f = 0.02 %3D 52. Compute the velocity of water in pipe AB. a. 2.297 m/s b. 1.452 m/s c. 3.147 m/s d. 2.672 m/s 53. Compute the velocity of water in pipe CD. a. 1.23 m/s b. 4.08 m/s c. 3.56 m/s d. 5.59 m/s 54. Compute the discharge of the pipe from A to B due to pumping. a. 0.65 m3/s b. 0.45 m3/s c. 0.89 m³/s d. 0.25 m3/s 60 m, f= 0.02 m and loss of head ith
- PIEZOMETERS HAVE BEEN PLACED ALONG THE DIRECTION OF FLOW IN A CONFINED AQUIFER THAT 13 30 m THICE. APART. THE DIFFERENCE IN PIEZOMETER HEAD IS 1.4 m ASSIMING THAT THE ACGDIFER IS ALMSST MADE OF FINE SAND, CALCULATE THE FOLLOVING TWO THE PIEZOMETERS ARE 280 m. a) THE TRAVEL TIME OF WATER FLOW THE PIEZOMETERS? BETWEEN b) THE DISCHARGE?. 4 c) THE DARCY VELOCITY?Q3) A differential manometer is connected at two points A and B of two pipes. The pressure at A and B are 1 bar and 2 bar respectively. Find the difference in mercury level in the diffrential manometer. Sp. gr= 1.5 Sp. gr.=0.9 2.0 mQuestion- Well Hydraulics Civil Engg. A 20cm well penetrated directly into a confined aquifer of permeability 4.4x10 m/s is with a thickness of 12m. Under steady state condition, the radius of influence is 150m and the drawdown is 3m. The discharge is..?
- A fluid with a kinematic viscosity equal to 2,951E-5 ft2/s moves within the section Shown. It is known that the Reynolds number is 27066, a = 2.2 in, b = 4.7 in, r = 0.569 in, and the Angles a = 35° and Ⓒ = 72°. The hydraulic diameter, in, is: α aIn the heterogeneous system shown below, 1-D groundwater flow is perpendicular to layers of varying hydraulic conductivity. K1 = 0.5cm/sec; K2 = 0.10cm/sec; K3 = 0.25cm/sec and b1 = 20 m; b2 = 40 m; b3 = 60 m Ah, Ahz Ah3 K1 K2 K3 b1 b2 b3 a) The flow across the system q is 0.03cm/sec/m². Using Darcy's Law, find the change in head Ah across each layer. b) Find the effective hydraulic conductivity (Ke) for an equivalent homogeneous system, that is, a system with the same total gradient and flow rate as the heterogeneous system.The pressure gauges are inserted at A and B in a vertical pipe converging water. The diameters at A and B are 150mm and 75mm respectively. The point B is 2.3m below point A. When rate of flow down the pipe is 0.021m³/s. The pressure at B is 117.72 KN/m² greater than at A. The losses in pipe between A and B are expressed as(KVa²/2g) where Va is velocity of A. Find the value of K. If the pressure gauges at A and B are replaced by tubes filled with water and connectef to a u-tube containing Hg(SHg=13.6) calculate the value of the reading manometer.
- A town is planning to develop a new water supply from an aquifer. Two observation wells installed 1000 ft apart have respective head of 300 ft and 295 ft above a common datum. Within the aquifer, hydraulic conductivity (Kn) 25 ft/day. The aquifer has a mean width (w) = 2 miles and thickness (b) = 200 ft. Estimate the volumetric flow %3D %3D %3D rate through the aquifer in cubic feet per day. Well 1 h= 300 ft 1000 ft Well 2 h = 295 ft AQUIFER 200 ft suturation 2 miles(b) TABLE Q1(b) shows three layers of soil used in permeability pilot test. (i) Calculate the average vertical conductivity of the soil in cm/day. (ii) Calculate the transmissivity of the soil when water is at the ground surface. (iii) Discuss the factors that might affect the results obtained in Q1(b)(i) and Q1(b)(ii).4~ When flow velocity increases, it alters the shape of the flow velocity profile. Clarify 5~ What are the advantages and disadvantages of the pitot static tube. 6~ Does altering fluid temperature influences the results obtained by pitot static tube? clarify