For a given result of a tri-axial test, the failure envelope passes through a tensile stress of 17.7 kPa. The chamber of confining pressure used in the test was 25.14 kPa and the plunger stress at failure of the soil was 58.8 kPa. Determine Internal angle of friction for the soil  Angle of the failure plane from the principal plane  Stresses at failure of the soil

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 12.8P
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For a given result of a tri-axial test, the failure envelope passes through a tensile stress of 17.7 kPa. The chamber of confining pressure used in the test was 25.14 kPa and the plunger stress at failure of the soil was 58.8 kPa.

Determine

  1. Internal angle of friction for the soil 
  2. Angle of the failure plane from the principal plane 
  3. Stresses at failure of the soil 
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