Principles of Geotechnical Engineering (MindTap Course List)
Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 7, Problem 7.20P
To determine

Find the hydraulic conductivity of the saturated clay.

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Problem 7.20
7.10 The hydraulic conductivity of a sand at a void ratio of 0.5 is 0.022 cm/sec. Estimate its hydraulic conductivity at a void ratio of 0.7. Use Eq. (7.31). 7.18 A layered soil is shown in Figure 7.31. Estimate the ratio of equivalent hydraulic conductivity, kmeq/kvieg)- 1.5 m 1 m 1.5 m |k = 2 × 10-³ em/sec (top layer) | k = 2 × 10-4 cm/sec | k = 10-4 cm/sec | k = 3 × 10-4 cm/sec (bottom layer) Figure 7.31 -
3. A layered soil deposit is shown in the figure below with anisotropic values of the coefficient of hydraulic conductivity in the horizontal (x) and vertical (y) directions. Calculate the equivalent homogeneous values of the coefficient of hydraulic conductivity in the horizontal and vertical direction. kx,eg: cm/sec ky,eq: cm/sec TIRSURIT WASUKSIT 1.5 m k,= 1.2 x 10³ cm/s, k, = 2.4 x 10 cm/s 2.0 m k, = 2.8 x 10 cm/s, k, = 3.1 x 105 cm/s 2.5 m k₁=5.5 x 10-5 cm/s, k, = 4.7 x 10 cm/s
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