A fine-grained (silty-clay) soil is required for the core of a rockfill dam. The permeability tests are performed on two types of soil. The diameter (D) of the specimen was 8 cm, length (L) between the measuring points was 15 cm. the following table shows the recorded data during the test for both the soils. Soil A B Head difference, h (cm) 12 15 Volume of water, V (cm3) 10 8 Time, t (sec) 300 350   Compute the hydraulic conductivity (k) by applying Darcy’s Law and select the best soil. Give reasons for the answer.

Q: A permeability test was run on a soil sample with 8cm in radius and 10cm long. The level of water at…

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Q: The following results of a falling head permeability test. Calculate the permeability of the soil…

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Q: The results of a constant head permeability test for a fine sand sample having a diameter of 150 mm…

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Q: For a falling a head permeability test, the following data were recorded. Length of soil specimen =…

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Q: Problem # 1. A constant head permeability test is performed on a sample of granular soil. The length…

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Q: 4. The table shows the result of consolidated drained tri-axial tests with pore water pressure…

A: Consider the table Sample Total confining pressure Total normal stress at failure Pore Pressure…

Q: During a constant head permeability test on a sand sample, 260 x 10^3 mm^3 of water were collected…

A: Given data: Volume of water collected: V=260×103 mm3  Time (t)= 2 minutes. Length of sample(L)=100…

Q: constant head permeability test is performed on soil that is 2 cm x 2 cm square, and 2.5cm long. The…

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Q: A permeability test was run on a soil sample with 8cm in radius and 10cm long. The level of water at…

A: Given,  Radius of soil sample R = 8 CM Length of soil sample L = 10 CM Permeability of soil k =…

Q: For a falling-head permeability test, the following are given: • Length of soil specimen = 700 mm •…

A: To find out the absolute permeability and head diffrence at time - 6 minutes.

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

A: 1. The discharge in the soil is given by,

Q: A constant head permeability test was conducted on a soil specimen under a hydraulic gradient of…

A: hydraulic gradient, i= 2.5. The soil specimen has specific gravity,G = 2.65 saturated water…

Q: The following readings (Table 1) were taken for an increment of vertical stress of 50 kPa in an…

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Q: The result of a constant head permeability test for a fine soil sample having a diameter of 150mm…

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Q: In a proctor test, the soil specimen of one of the observations had a bulk density of 19 KN/m^3 with…

A: Given data,  Moisture Content (w) = 15% Bulk density = 19 KN/m³ Specific Gravity (Gs) = 2.7   To…

Q: In a falling head permeameter, tge sample used is 18cm long havibg a cross sectional area of 22cm^2.…

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

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Q: Refer to the constant-head permeability test arrangement in a two-layered soil as shown in Figure…

A: Given data:  h1= 200 mm h2 =80 mm k1=0.004 cm/sec, H1 = 100 mm H2 = 150 mm. It is asked to…

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: In a constant head test, the sample of sand was collected 150 cm3 of water in just two minutes. The…

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Q: Question attached

A: given data: L=2500 ft C=12

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

A: The given data is: Length of sample (L) = 15 cm Area of the sample (A) = 60 cm2 Quantity of water…

Q: During a subsurface exploration, an undisturbed soil sample was collected in the field using a…

A: Question is based on subsurface exploration from which undisturbed soil sample is collected using a…

Q: Prob. A falling head permeability test was performed on a sample of silty sand. The time required…

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Q: In a falling-head permeability test the initial head of 2.00m dropped to 0.40 m in 3h, the diameter…

A: Calculate the coefficient of permeability of soil,K=?

Q: During a falling head test, the head fell from 80cm to 65cm in 83 seconds. The specimen was 5cm in…

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Q: Answer both 1 (i) and (ii) 1) i) A 6 inch diameter well that fully penetrates a 40ft thick open…

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Q: A falling head permeability test was carried out on a 15 cm long sample of silty clay. The diameter…

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Q: PROBLEM B For a constant head laboratory test on a fine sand, the following are the given values: •…

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

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Q: 4. The permeability test as mentioned in the question above (a) was carried out twice on the same…

A: To Find :- duration of test 2 in permeability test of soil.

Q: Situation 2 - For a constant laboratory permeability test on a fine sand, the following data are…

A: Given data of the Constant head permeability test :-  Length of specimen (L) = 16 Cm  Diameter of…

Q: 3. For a constant head laboratory permeability test on a fine sand, the followi given: Length of…

A: Solution (3) a. Compute the coefficient of permeability in cm/sec. b. Compute the discharge velocity…

Q: A sample coarse grained soil is 60mm. In diameter and 150mm long was tested in a constant-head…

A: To Determine a) temperature correction factor b) corrected coefficient of permeability C)…

Q: HYDRAULIC CONDUCTIVITY PROBLEM 1: The results of a constant head permeability test for a fine sand…

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Q: Determine the coefficient of permeability of the soil. For a falling- head permeability test, the…

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Q: A falling head permeability test was carried out on a 15cm long of silty clay. The diameter of the…

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Q: constant head permeability test is performed on soil that is 2 cm x 2 cm square, and 2.5cm long. The…

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Q: A constant head permeability test is performed on soil that is 4 cm2, and 2.5cm long. The head…

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Q: A sand cone test shown in the Fig.5 has been performed in a compacted fill performed on a soil…

A: A sand cone test has been performed in a compacted fill performed on a soil sample Initial mass of…

Q: In a falling head permeability test, the following data was obtained: diameter of standpipe = 1.5…

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Q: constant-head permeability test was conducted on a soil sample retained inside a with a length of…

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

Q: A 50 mm diameter and 90 mm-long silty clay sample was subjected to a falling head permeameter test…

A: Solution:- We know that in falling head permeameter test the permeability is given as:…

Q: Situation 2 - For a constant laboratory permeability test on a fine sand, the following data are…

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Q: In a falling head permeability test on a soil sample of length L1, the head of water in the stand…

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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…

A: Length of sample (L) = 15 cm. Area of cross-section (A) = 60 cm2 Head difference (h) = 24 cm Volume…

Q: A constant-head permeability test is performed, and the information below indicates the test…

A: Given Data- Height of reservoir supply source = 2 m = 2000 mm Soil sample length, L = 200 mm…

Q: In a falling permeameter, the sample used is 20 cm long having a cross-sectional area of 24 cm2. The…

A: H1=8cm H2=6cm H3=4cm

Q: 95 mm. Constant head difference: 54 cm. Volume of water collected in 4.10 min.: 423 cc Void ratio of…

A: We knowq=kiAVoltime=k(ΔhL)(Area)423×10-6m34.1×60sec=k(0.540.18)(π4×0.952)k=80.86×10-8ms

Q: a. A constant head permeability test was performed on a 30 cm2 (cross sectional area) soil sample.…

A: Given A = 30cm .l = 10 cm Head, h = 15 cm V = 20 cm .t = 2 min .q = V/t = 20 / 2 = 10 cm/min K =…

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.