Problem # 1. A constant head permeability test is performed on a sample of granular soil. The length of the soil sample is 15 cm and the cross-sectional area is 10 cm^2. If a 24 cm^3 volume of water passes through the oil sample in a 3-minute period and the constant head is 30 cm determine the following a. Determine the coefficient of permeability of the soil. b. Find the discharge velocity. c. Compute the seepage velocity if the void ratio is 0.64.

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A: we knowk=QLAhtQ=0.044in3L=10inA=π42.52h=22int=2minso,k=0.044in310inπ42.52×22in×2mink=0.002037inmin

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Q: constant

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A: solution Given moisture content w1=39.7%    w2=37.6%number of blows N1=20       N2=30

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Q: A constant-head test was conducted on a sample of soil  15 cm long and 60 cm2 in cross-sectional…

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Q: Constant head test was conducted to determine the permeability constant of a certain soil sample.…

A: Constant head = 29.14 cm Time= 141 sec Overflow volume= 939 cm3  Diameter = 6.2 cm Length = 1.92 cm…

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Q: falling head permeability test

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A: V=60cm3 t=25sec L=12cm D=8cm

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A: WE KNOWk=qLAhq=VolumeTimeVolume=55cm3time=3hr 15min=195min=195·60 sec

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Q: A constant-head test was conducted on a sample of soil 15cm long and 60 cm^2 in cross-sectional…

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Laboratory Determination of Hydraulic Conductivity

Hydraulic conductivity is the measure of flowability of water inside the soil in the presence of a hydraulic gradient. The hydraulic gradient is defined as the difference in the water heads in the soil, which induces a water motion. In simple terms, a hydraulic gradient is the presence of a potential that induces a flow of water.