Problem 1:A cohesive soil sample has an angle of internalfriction equal to 30° and a cohesion of 28 kPa.If the maximum shearing stress of the soil isequal to 60 kPaa) What is the confining pressure in the cell for afailure to occur?b) Solve for the maximum principal stress tocause failure.c) Determine the normal stress at the point ofmaximum shear.

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Answered: Problem 1: A cohesive soil sample has…

Problem 1: A cohesive soil sample has an angle of internal friction equal to 30° and a cohesion of 28 kPa. If the maximum shearing stress of the soil is equal to 60 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 12.20P

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Concept explainers

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 sustain.

Question

Problem 1:
A cohesive soil sample has an angle of internal
friction equal to 30° and a cohesion of 28 kPa.
If the maximum shearing stress of the soil is
equal to 60 kPa
a) What is the confining pressure in the cell for a
failure to occur?
b) Solve for the maximum principal stress to
cause failure.
c) Determine the normal stress at the point of
maximum shear.

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