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a tri-axial test of silty soil, the sample failed at normal stresses of 521 kPa and a shear stress of 200 kPa.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter12: Shear Strength Of Soil

Section: Chapter Questions

Problem 12.18P

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Question

In a tri-axial test of silty soil, the sample failed at normal stresses of 521 kPa and a shear stress of 200 kPa.

1. Find the angle of internal friction.

a. 23°

b. 19°

c. 21°

d. 22°

2. Compute the angle that the failure plane makes with the x-axis

a. 55.5°

b. 61.6°

c. 61.7°

d. 45.3°

3. Compute the maximum failure stress.

a. 781 kPa

b. 510 kPa

c. 838 kPa

d. 812 kPa

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