2 A granular soil is subjected to a minor principal stress of 200 kN/m2. If the angle of internal friction is 30°, determine the inclination of the plane of failure with respect to the direction of the major principal stress. What are the stresses on the plane of failure and the maximum shear stress induced? 3 An embankment consists of clay fill for which c' = 25 kN/m2 and o = 27° (from consolidatedundrained tests with pore-pressure measurement). The average bulk unit-weight of the fill is 2 Mg/m. Estimate the shear- strength of the material on a horizontal plane at a point 20 m below the surface of the embankment, if the pore pressure at this point is 180 kN/m? as shown by a piezometer.

2 A granular soil is subjected to a minor principal stress of 200 kN/m2. If the angle of internal friction is 30°, determine the inclination of the plane of failure with respect to the direction of the major principal stress. What are the stresses on the plane of failure and the maximum shear stress induced? 3 An embankment consists of clay fill for which c' = 25 kN/m2 and o = 27° (from consolidatedundrained tests with pore-pressure measurement). The average bulk unit-weight of the fill is 2 Mg/m. Estimate the shear- strength of the material on a horizontal plane at a point 20 m below the surface of the embankment, if the pore pressure at this point is 180 kN/m? as shown by a piezometer.

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter15: Braced Cuts

Section: Chapter Questions

Problem 15.6P

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