A sand sample in a triaxial test have the following stresses: Cell Pressure 25kpa 34kpa Axial Stress 33kpa 55kpa Pore Water pressure 12kpa 10kpa a. Compute the drained angle of internal friction. Determine the cohesion of the soil c. Find the angle of failure in shear b.

A sand sample in a triaxial test have the following stresses: Cell Pressure 25kpa 34kpa Axial Stress 33kpa 55kpa Pore Water pressure 12kpa 10kpa a. Compute the drained angle of internal friction. Determine the cohesion of the soil c. Find the angle of failure in shear b.

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

A sand sample in a triaxial test have the following stresses:
Cell Pressure
25kpa
34kpa
Axial Stress
33kpa
55kpa
Pore Water pressure
12kpa
10kpa
a. Compute the drained angle of internal friction.
b. Determine the cohesion of the soil
c. Find the angle of failure in shear

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Step 1: Given:-

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Step 2: Major and minor principal stresses calculations:-

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Step 3: Sample 1:-

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Step 4: Sample 2:-

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Step 5: Angle of internal friction calculations:-

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Step 6: Cohesion of soil calculations:-

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Step 7: Angle of failure in shear:-

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