DAM 30 FT FLOW T = 20 FT SAND %3D IMPERVIOUS ROCK B = 240 FT The total length of the dam shown is 800 ft. The hydraulic conductivity of the permeable sand layer is 0.05 ft/min. Compute the discharge through the permeable sand layer in cubic feet per minute.
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- DAM 30 FT FLOW T 20 FT SAND IMPERVIOUS ROCK B = 240 FT The total length of the dam shown is 800 ft. The hydraulic conductivity of the permeable sand layer is 0.05 ft/min. Compute the discharge through the permeable sand layer in cubic feet per minute.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.Given: H = 52 ft, 80 h₁ = 47 ft, h₂= 50. 75 ft, discharge q under steady condition ft3/min, r = 10 ft, and r2 = 20 ft. Calculate The hydraulic conductivity in ft/year. Aprifor Opsl GT- Trend D. Ouvertelle one's
- Example 3 q=3m³/s/m { calculate the following parameters for the bed level raise. = 2m y₁ = Y₂ = ? AZ = 0.2m a) determine the specific energy at section 2 (E₂) b) determine the downstream depth, (Y₂) e) interpret the results in £₁ = E₂ + 4E c) determine the absolute change in the water surface level (d) determine the downstream. Frade number (Fr₂) the context of E-y (Ay) ут= Угт ду curve.Don't copy from other solutions thank you. 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.Need help with C. 8. An aquifer has a hydraulic conductivity of 12 ft/d and an effective porosity of 17% and is under a hydraulic gradient of 0.0055. (A) Compute the specific discharge. (B) Compute the average linear velocity. (C) The water temperature is 14°C and the mean pore diameter is 0.33 mm. Is it permissible to use Darcy's law under these circumstances? What is the reason for your answer?
- A 12 inch diameter well was installed in an unconfined aquifer consisting of a 60 foot thick layer of sand. The water table was 15 feet below the ground surface before pumping of the well began. The well was then pumped at a rate of 30 gallons per minute and the water level in the well dropped to 45 feet below the ground surface after a steady-state condition was reached. The radius of well influence is 4000 feet. a) Calculate the permeability of the sand b) Compute and plot the drawdown surfaceGiven the earth dam and flow net shown, calculate the total head at point A. The water height behind the dam is 15ft. The soil has a hydraulic conductivity of 100 ft/year. EL-0 EL-10 25 ft 15 ft 23 ft 13 ft Water Level Water Level Tall 130 lb/ft³ Impervious Stratum= gives a cross section of a concrete dam. The subsoil is anisotropic and has 0.8 x 10 in./sec and kv 2.0 x 10 in./sec. Find the rate of flow permeabilities kh beneath the dam per foot length of the dam. And the factor of safety against piping if void ratio of soil= 0.68 and Gs= 2.7. 32 ft 3 ft ZAW ky kh 55 ft Concrete dam TAVAS 557 KN WAY Swise. 275-21 TAVAW
- gives a cross section of a concrete dam. The subsoil is anisotropic and has permeabilities kh = 0.8 x 10 in./sec and kv= 2.0 x 10 in./sec. Find the rate of flow beneath the dam per foot length of the dam. And the factor of safety against piping if void ratio of soil= 0.68 and Gs= 2.7. 32 ft 3 ft ky k₁ 55 ft Concrete dam TAVAY 557 KN Kin + TAVAS imisel. 275-21 AWAWA sand layer of the cross-sectional area shown in the figure has been determined to exist for a 500 m. length of the levee. The hydraulic conductivity of the sand layer is 3 m/day. Determine the quantity of water which flows into the ditch in cu.m/min. * O (3 Points) w.s. El.=160 Levee Impervious layer' 10 m w.s. El.=150 2 m Sand Ditch Impervious layer 125 m O 240 cu.m/min O 0.166 cu.m/min O 288 cu.m/minThree 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.