For 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 fine sand was tested in situ to give a coefficient of permeability of 3.7 x107 m/s. A sample of the same sand, 400mm high and 100 mm in diameter was then tested in a constant head permeameter. Water percolated through the soil under a head of 600mm for 5 minutes and the discharge water had a volume of 1300mm. Determine whether the in situ testing was reflected by the laboratory results and If the below water retaining structure is 140m in width, based on a coefficient of permeability of 7.8x10°m/s, determine the quantity of water that will flow through the soil and under the structure per day.

The hydraulic conductivity of a soil sample (3.4 x 10-4 cm/s) has been determined via a permeability test. The water temperature was 28°C at the time of experiment. What is the hydraulic conductivity of the sample at the standard temperature of 20°C?

Given: Permeability, k = 40 x 104 cm/s Saturated unit weight of the soil = 20 kN/m³ Other information shown in the Figure E3-3 Determine the following: (a) Quantity of Discharge (b) Total vertical stress at Points B and D (c) Pore-water pressure at Points B and D (d) Effective vertical stress at points B and D 20.0 m 6.5 m 5.0 m 10.5 m Water YAY Concrete Impervious Figure E3-3 1.0 m VAYAYAY 5.0 m

Problem: For a constant laboratory permeability test on a fine sand, the following data are given: Length of specimen - 16 cm Diameter of specimen - 9.6 cm Constant head difference - 50 cm Volume of water collected in 4 min - 420 cc Void ratio of the soil specimen - 0.55 A.) Determine the hydraulic conductivity of the soil in cm/sec B.) Determine the discharge velocity in cm/sec C.) Determine seepage velocity in cm/sec

Problem (2) The following data are for a variable head permeability test: Area of soil specimen=1200mm? Length of the soil specimen = 150mm Area of the standpipe = 1.3cm² At time t=0, head difference = 750mm At time t=2min, head difference = 500mm 2 %3D a) Find the hydraulic conductivity of the soil in cm/min.

A sample of sand is subjected to a constant head permeability test. The sample diameter is 60 mm and its length is 130 mm. Under an applied head of 60 cm, 119 cm³ of water flows through the sample in 5 minutes. Determine (a) the coefficient of permeability, and (b) the discharge velocity.

For each of the three cases shown in Figure 3 determine: a). the pressure head, elevation head, total head, and cumulative head loss at the entrance, exit and point A of the soil sample. For each case, set the datum at the tail water elevation. b). the discharge velocity and the seepage velocity if the soil's permeability coefficient is 0.10 cm/s and the porosity is 40%. POTTAWA c). the discharge velocity and the seepage velocity if the soil's permeability coefficient is 0.001 cm/s and the void ratio is 0.600. BAINA LE DROIT 3 m 4m + 2m A. Case I ez ilise ROTÉGÉ PAR 3 m 1m 4m est cadre A. Case II sirez 1 m e mate ificati Figure 2 dood 3 m 5 m TED MATERIA Case III urse are rected by cop not harmission to up nox clarification, ple 1 m

1. For a constant head laboratory permeability test on a fine sand, the following values are given: L = 300 mm; D₁ = 200 mm; h = 400 mm; Vol = 420 m³; t = 4 min; e = 0.55. a. Compute the coefficient of permeability in cm/sec. b. Compute the discharge velocity in cm/sec. c. Compute the velocity. seepage 2. For a falling head permeability test, the following are given. Length of specimen is 380 mm, are of specimen - 6.5 cm², hydraulic conductivity of soil specimen is 0.175 cm/min. a. What should be the area of the stand pipe for the head to drop from 650 cm to 300 cm in 8 min?

Soil layers are shown as the right figure. Given: H₁ = 2 m, k₁ = 10-4 cm/sec H₂ = 3 m, K₂ = 3.2 x 10-² cm/sec H₂ = 4 m, K₂ = 4.1 x 10-5 cm/sec Estimate the ratio of horizontal equivalent hydraulic conductivity and vertical equivalent hydraulic conductivity, i.e., k./k₂ T * H₂ H₂ a. 152 Ob. 270 O c. 140 O d. 225 k₁ k₂ k3