Answered: A borehole. A clay layer is discovered…

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 8.10P: The soil profile at a site consists of 10 m of gravelly sand underlain by a soft clay layer. The...

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A borehole. A clay layer is discovered 7m below a sandy soil. The groundwater table of the area is 10m below the natural grade line. The sandy soil has a unit weight of the clay layer is 22.3 kn/m3 , and the moisture content and specific gravity is 12.4% and 2.7, respectively.

A. Find the driend unit weight of the clay layer

B. Find the total stress on a point 13m below the natural grade line.

C. The effective stress at a point 10m below the grade line.

D. Find the effective stress 13m below the natural grade line if there is a ground water drawdown of 4.5m due to groundwater extraction

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