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- The amount of water collected is 0.0037 cubic meter for the total time of 90 seconds. Find the diameter of the cross-sectional of the soil specimen if the hydraulic gradient is 2.4, permeability of soil is 3.15x10-4 m/sec.The section size of a water pipe is (100cm Χ 100cm), three types of soils A, B, and C are placed in the pipe, and a fixed amount of water is injected into the top left tap to keep the water head difference between the left and right ends of the pipe 60cm. The three soil permeability coefficients are k_A = 0.05 cm/sec , K_B = 0.1 cm/sec, k_C = 0.001 cm/sec, please calculate the following values:(1) The fixed amount of water injected into the faucet on the upper left (cm3/hr)(2) What is the total water head consumed by each of the three soils of A, B, and C (cm)(3) The overall volumetric seepage force of water flowing through the three soils (kN/m3)a. For each of the cases, I, II and III, determine the pressure elevation and total heads at points A, B and C. Use the given datum in each case. b. If the coefficient of permeability of the soil in each case is 2 cm/sec, and the cross sectional area is 10 cm2 calculate the water flow rate through the soil. Assume head loss is only through the soil sample.
- Find the flow rate of water in cm3 /s if the value of soil permeability is 0.9 cm/s, hydraulic gradient is 1.25, and the diameter of the soil specimen is 175 mm.Field Permeability Testing:Calculate the permeability of the soil from a confined aquifer given the followingbore pumping test results Distance from pump well Drawdown Drawdown Observation well 1 10km 200mm Observation well 2 15km 25mm Depth of Aquifer 600mm Depth of Aquiclude 2200mm Flow from Pump 23 l/sQ- If a soil has a voids ratio of 0.68 and water percolating through it has a discharge velocity of 1.35*10-2cm/s. Calculate its seepage velocity.
- 49. A pumping test was made in a sand layer extending to a depth of 16m. The initial groundwater table was located 2m below the ground surface. Observation wells were sighted at distances 4m and 9.5m from the pumping well. Using a discharge of 0.4 cubic meters per hour, a steady level is attained at the pumping well. The measured drawdowns at the two observation wells are 2m and 0.25m respectively. Determine the coefficient of permeability of the soil.Water table is at a depth of 10 meters in a silty soil mass. The sieve analysis indicates the effective diameter D10 of the soil mass equal to 0.05 mm. Determine the capillary rise of water above the water table. Assume e=0.51 and C=0.5 sq. cmFor a falling-head permeability test, the following values are given: Length of specimen = 200 mm Area of soil specimen = 1000 mm^2 Area of standpipe = 40 mm^2 Head difference at time t = 0 = 500 mm Head difference at timt t = 3 minutes = 300 mm Determine the hydraulic conductivity of the soil in ×10−4cmsec Please answer this asap. For upvote. Thank you very much
- A 15 cm vertical soil sample is taken and placed in constant head permeameter. The surface area of the soil sample is 20 cm2. h1 is measured at 25 cm and h2 is 10 cm. The water that flows through the soil sample has a constant discharge and 95 cm3 is collected in 15 minutes. Calculate the hydraulic conductivity of the soil sample. What kind of soil you think this is?A block of soil in a permeability test has a length of 120 mm and a cross-sectional area of 600 mm2. The water level at one end is 200 mm above a fixed datum and at the other end is 30 mm above the same plane. The flow rate was 2 ml in 90 seconds. Compute the coefficient of permeability of the soil in m/s. a.2.61 x 10-5 m/s b.0.98 x 10-5 m/s c.1.78 x 10-5 m/s d.3.97 x 10-5 m/s e.1.89 x 10-5 m/sThe figure shows water flowing through saturated soil in the hatched area. Calculate the elevation pressure and total heads at points A, B and C. If the coefficient of permeability of the soil in the hatched area is 5 cm/sec and the cross sectional area of the soil sample is 15m2 calculate the water flow rate through the soil.