Foundation Design: Principles and Practices (3rd Edition)

3rd Edition

ISBN: 9780133411898

Author: Donald P. Coduto, William A. Kitch, Man-chu Ronald Yeung

Publisher: PEARSON

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Test for Determination of Shear Strength

The term shear strength is often associated with the soil. Shear strength is defined as the resistance to the deformation of soil particles due to the continuous action of shear stress. In short, shear strength is the maximum shear stress that a soil can…

Textbook Question

Chapter 4, Problem 4.10QPP

A series of vane shear tests have been performed on a soft clay stratum. The results of these tests are as follows:

Chapter 4, Problem 4.10QPP, A series of vane shear tests have been performed on a soft clay stratum. The results of these tests

The vane was 60 mm in diameter and 120 mm long. The soil has a liquid limit of 100 and a plastic limit of 30. Compute the undrained shear strength for each test, then develop a plot of undrained shear strength versus depth. This plot should have depth on the vertical axis, with zero at the top of the plot.

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Chapter 4, Problem 4.9QPP

Chapter 4, Problem 4.11QPP

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A field vane shear test was conducted in saturated clay. The height and diameter of the vane were 101.6 mm and 50.8 mm respectively. During the test, the maximum torque applied was 0.0168 kN.m Determine the undrained shear strength of the clay? The clay soil described above has a liquid limit of 64 and a plastic limit of 29. What is the plasticity index?

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Chapter 4 Solutions

Foundation Design: Principles and Practices (3rd Edition)

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A triaxial test was performed on a dry, cohesionless soil under a confining pressure (?3) of 144 kN/m2. If the sample failed when the deviator stress (∆?) reached 395.8 kN/m2, determine the soil’s angle of internal friction ∅ and the angle of the failure plane θ. Show step by step hand calculation. Show all work.

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