A test is set-up as shown in the figure below. A cylindrical moid 4" in diameter is filled with silt to a height H1= 0.28 ft whose coefficient of permeability is 6.28x10^-4 ft/min. A second coaxial mold, placed on top of the silt inside the first mold, has an inside diameter of 1.50 and height of H2= 0.35 ft. Its thickness is negligible. The inside of this second mold is filled with the same silt, but the annular ring outside is filed with sand whose coefficient of permeability is 3.75x10-3 ft/min. The test ser-up is a permeameter of constant head. Water is placed in the moid and maintained at a level h = 1.45 ft above the level of the outlet. 4" 1.5" SAND H2 SILT H1 SILT a. Determine the total amount of flow of water through the soil in ft 3/min. (IN EXPONENTIAL FORM AND IN 2 DECIMAL PLACES) b. Determine the equivalent coefficient of permeability of the system in ft/min. (IN EXPONENTIAL FORM AND IN 2 DECIMAL PLACES) c. Determine the total amount of flow in cubic feet that percolated after 70 mins. (IN EXPONENTIAL FORM AND IN 2 DECIMAL PLACES)
A test is set-up as shown in the figure below. A cylindrical moid 4" in diameter is filled with silt to a height H1= 0.28 ft whose coefficient of permeability is 6.28x10^-4 ft/min. A second coaxial mold, placed on top of the silt inside the first mold, has an inside diameter of 1.50 and height of H2= 0.35 ft. Its thickness is negligible. The inside of this second mold is filled with the same silt, but the annular ring outside is filed with sand whose coefficient of permeability is 3.75x10-3 ft/min. The test ser-up is a permeameter of constant head. Water is placed in the moid and maintained at a level h = 1.45 ft above the level of the outlet. 4" 1.5" SAND H2 SILT H1 SILT a. Determine the total amount of flow of water through the soil in ft 3/min. (IN EXPONENTIAL FORM AND IN 2 DECIMAL PLACES) b. Determine the equivalent coefficient of permeability of the system in ft/min. (IN EXPONENTIAL FORM AND IN 2 DECIMAL PLACES) c. Determine the total amount of flow in cubic feet that percolated after 70 mins. (IN EXPONENTIAL FORM AND IN 2 DECIMAL PLACES)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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