A soil has an unconfined compressive strength of 120 kN/m2. In a triaxial compression test, a specimen of the same soil when subjected to a chamber pressure of 40 kN/m2 failed at additional stress of 160 kN/m2. Determine the angle made by the failure plane with the axial stress in the triaxial test. Hint: Draw the Mohr Circle. a.19 b.54.5 c.45.5 d.43

Structural Analysis
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A soil has an unconfined compressive strength of 120 kN/m2. In a triaxial compression test, a specimen of the same soil when subjected to a chamber pressure of 40 kN/m2 failed at additional stress of 160 kN/m2. Determine the angle made by the failure plane with the axial stress in the triaxial test. Hint: Draw the Mohr Circle.

a.19
b.54.5
c.45.5
d.43
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