Q.3) USE ONLY GRAPHICAL METHOD: A consolidated-drained triaxialtest was conducted on a normally consolidated clay with a chamberpressure, σ3 = 172 kN/m2 . The deviator stress at failure, (Δσd)f =227 kN/m2 . Determine (12 points): a. The angle of friction, φ' b.The angle θ that the failure plane makes with the major principalplane c. The normal stress, σf', and the shear stress, τf, on thefailure plane
