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Problem 3 In a constant head permeability test in the laboratory, the following are given: L...
Problem 3. In a constant-head permeability test, the length of the specimen is 150 mm and...
Problem 3. In a constant-head permeability test, the length of the specimen is 150 mm and the cross-sectional area is 3167 mm". If k = 0.062 cm/sec and a rate of flow of 160 cm/min has to be maintained during the test, what should be the head differ- ence across the specimen? Also, determine the discharge velocity under the test conditions.
Problem 3. For a falling-head permeability test, the following are given: Length of soil spec imen...
Problem 3. For a falling-head permeability test, the following are given: Length of soil spec imen 500 mm Area of the soil specimen 16 cm Area of the standpipe 0.97 cm2 Head differences at time t 0 is 760 mm Head differences at time t 8 min is 410 mm a) Determine the hydraulic conductivity of the soil b) What was the head differences at time t 5 min
In a laboratory, a falling-head permeability test was conducted on a silty soil. For the falling-head...
In a laboratory, a falling-head permeability test was
conducted on a silty soil. For the falling-head apparatus, the
following data were obtained:
1. Length of Specimen = 15.80 cm.
2. Diameter of Specimen = 10.16 cm.
3. Cross-sectional area of burette = 1.83 cm2
4. Hydraulic head at beginning of test (h1) = 120.0
cm.
5. Hydraulic head at end of test (h2) = 110.0 cm.
6. Time required for water in the burette to drop from
h1 to h2...
Problem 3: A constant-head permeability test was performed on the soil sample shown below. The hydraulic...
Problem 3: A constant-head permeability test was performed on the soil sample shown below. The hydraulic conductivities were 0.04 cm/s for the sand and 0.0004 cm/s for the silt. The cross-sectional area of the sample is 10 cm², of which 9 cm' is sand and the remainder is silt. (a) Plot how the total hydraulic head (expressed in terms of AH) and hydraulic gradient vary along the length of the sample. (b) What would be the hydraulic conductivity (k) for...
Q3 (a) A falling head permeability test was conducted on a soil sample with diameter of...
Q3 (a) A falling head permeability test was conducted on a soil sample with diameter of 76 mm and sample length of 70 mm. The sample was connected to a standpipe of diameter 1.5 mm, where the water level (total head) was measured to drop from 1.56 m to 1.18 m in 65 s. Determine the coefficient of permeability of the soil sample. (b) Explain why it is more preferable to conduct the falling head test, instead of the constant...
Please write correct option after completion of your answer Length of soil sample for constant head...
Please write correct option after completion of your
answer
Length of soil sample for constant head permeability test is 30 cm, Area of specimen is 177cm2 constant head difference is 50 cm, total volume of water collected in 5 min is 350cm Calculate the hydraulic conductivity of the soil. ) 1.09x10 cm/sec )3.95x10cm/sec A) 2.85 x10'cm/sec )1.09x10 cm/sec We were unable to transcribe this imageFind the error in the discharge when a head of water over the crest of a...
B. A constant-head permeability test was run on a soil sample 7.3 em in diameter and...
B. A constant-head permeability test was run on a soil sample 7.3 em in diameter and 14 em long, Q-10 em/min, b-100 em. The soil grains have a dry weight of 985 g, a specifie gravity of 2.7, and a void ratio 0.610. Determine the followings a. The coefficient of permeability. b. The seepage velocity of the soil v. 15 c. The actual velocity v. 4c
The following data are for falling-head test performed at 25⁰C Temperature: Length of the soil sample...
The following data are for falling-head test performed at 25⁰C Temperature: Length of the soil sample = 40 cm Area of the soil sample = 78,54 cm2 Diameter of the standpipe = 1.1 cm At time t=0 head difference = 54 cm At time t=8 min, head difference = 22 cm a) Determine the permeability of the soil b) What was the head difference at t=4 min?
JE . For steady-state seepage shown in the Figure to the right, water levels are maintained...
JE . For steady-state seepage shown in the Figure to the right, water levels are maintained at the levels shown and water flows through the soil (shown in gray) from B to A. The cross-sectional area of the soil sample per- pendicular to flow is 2800 mm and soil permeability k is 0.05 cm/s. overflow 300 mm discharge a) What is the pressure head at point A? 280 mm 600 mm 600 mm b) What is the hydraulic gradient i...
Problem 3 In a laboratory consolidation test on a representative sample of cohesive soil, the original height of a d...
Problem 3 In a laboratory consolidation test on a representative sample of cohesive soil, the original height of a double-drained sample 50% consolidation was 5 min. The laboratory sample was taken from a soil layer which is 15 m thick in the field, doubly drained, and subjected to similar loading. How long will it take until the layer consolidates 50 %? b. If the final consolidation settlement is predicted to be 20 cm, how long will it take for a...
Problem 3. In a constant-head permeability test, the length of the specimen is 150 mm and the cross-sectional area is 3167 mm". If k = 0.062 cm/sec and a rate of flow of 160 cm/min has to be maintained during the test, what should be the head differ- ence across the specimen? Also, determine the discharge velocity under the test conditions.
Problem 3. For a falling-head permeability test, the following are given: Length of soil spec imen 500 mm Area of the soil specimen 16 cm Area of the standpipe 0.97 cm2 Head differences at time t 0 is 760 mm Head differences at time t 8 min is 410 mm a) Determine the hydraulic conductivity of the soil b) What was the head differences at time t 5 min
In a laboratory, a falling-head permeability test was
conducted on a silty soil. For the falling-head apparatus, the
following data were obtained:
1. Length of Specimen = 15.80 cm.
2. Diameter of Specimen = 10.16 cm.
3. Cross-sectional area of burette = 1.83 cm2
4. Hydraulic head at beginning of test (h1) = 120.0
cm.
5. Hydraulic head at end of test (h2) = 110.0 cm.
6. Time required for water in the burette to drop from
h1 to h2...
Problem 3: A constant-head permeability test was performed on the soil sample shown below. The hydraulic conductivities were 0.04 cm/s for the sand and 0.0004 cm/s for the silt. The cross-sectional area of the sample is 10 cm², of which 9 cm' is sand and the remainder is silt. (a) Plot how the total hydraulic head (expressed in terms of AH) and hydraulic gradient vary along the length of the sample. (b) What would be the hydraulic conductivity (k) for...
Please write correct option after completion of your
answer
Length of soil sample for constant head permeability test is 30 cm, Area of specimen is 177cm2 constant head difference is 50 cm, total volume of water collected in 5 min is 350cm Calculate the hydraulic conductivity of the soil. ) 1.09x10 cm/sec )3.95x10cm/sec A) 2.85 x10'cm/sec )1.09x10 cm/sec We were unable to transcribe this imageFind the error in the discharge when a head of water over the crest of a...
B. A constant-head permeability test was run on a soil sample 7.3 em in diameter and 14 em long, Q-10 em/min, b-100 em. The soil grains have a dry weight of 985 g, a specifie gravity of 2.7, and a void ratio 0.610. Determine the followings a. The coefficient of permeability. b. The seepage velocity of the soil v. 15 c. The actual velocity v. 4c
JE . For steady-state seepage shown in the Figure to the right, water levels are maintained at the levels shown and water flows through the soil (shown in gray) from B to A. The cross-sectional area of the soil sample per- pendicular to flow is 2800 mm and soil permeability k is 0.05 cm/s. overflow 300 mm discharge a) What is the pressure head at point A? 280 mm 600 mm 600 mm b) What is the hydraulic gradient i...
Problem 3 In a laboratory consolidation test on a representative sample of cohesive soil, the original height of a double-drained sample 50% consolidation was 5 min. The laboratory sample was taken from a soil layer which is 15 m thick in the field, doubly drained, and subjected to similar loading. How long will it take until the layer consolidates 50 %? b. If the final consolidation settlement is predicted to be 20 cm, how long will it take for a...
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