Problem 3. Given the following set up, where the reservoir levels are maintained at a constant evation: Find the total head for points A and B Find the hydraulic gradient for the system What is the pressure head at C? (in other words, if we install a piezometer at C, how high would the water level rise?) If 1.5 cm of water flows through the soil in 2 min, what is the hydraulic conductivity for the soil? A=10 cm2 бст 9cm cm SOIL.- DATUM 10cm

Problem 3. Given the following set up, where the reservoir levels are maintained at a constant evation: Find the total head for points A and B Find the hydraulic gradient for the system What is the pressure head at C? (in other words, if we install a piezometer at C, how high would the water level rise?) If 1.5 cm of water flows through the soil in 2 min, what is the hydraulic conductivity for the soil? A=10 cm2 бст 9cm cm SOIL.- DATUM 10cm

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter8: Stresses In A Soil Mass

Section: Chapter Questions

Problem 8.14P

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A falling head hydraulic conductivity test is performed on a sample of soil. The stand pipe having a diameter of 0.20cm is observed and it takes 60 seconds for the water to drop by 50 cm from an initial hydraulic head of 90cm. The sample has a length of 20cm, and a diameter of 4cm. a.Find the coefficient of permeability (cm/sec) b.Solve for the hydraulic gradient c. Compute the rate of flow of water in the soil. (cm' /sec.) 0.20 cm 6 s TAND PIPE 50cm Acm 不 20am -: SOIL
P 4: A sand sample of 35cm2 cross sectional area and 20cm long was tested in a constant head permeameter. Under a head of 60cm, the discharge was 120ml in 6min. The dry weight of sand used for the test was 1120g, and G3=2.68. Determine (a) the hydraulic conductivity in cm/s, (b) the discharge velocity, and (c) the seepage velocity. Answers: a) 3.174 x 103 cm/s, b) 9.52 x 10³ cm/s, c) 2.36 x 10-² cm/s
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A falling head hydraulic conductivity test is performed on a sample of soil. The standpipe having a diametre of 0.2 cm is observed and it takes 60 seconds for the water to drop by 50 cm from an initial hydraulic head of 90 cm. The sample has a lenght of 20 cm and a diameter of 4 cm. A. Find the coefficient of permeability of soil. B. Solve for the hydraulic gradient. C. Compute the rate of flow of water in the soil.
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