A consolidated-drained triaxial test was conducted on a normally consolidated clay. The results were as follows: oz = 250 kN/m? (Aoa); = 275 kN/m? Determine: a. Angle of friction, o' b. Angle 0 that the failure plane makes with the major principal plane c. Normal stress, o', and shear stress, 7, on the failure plane

Q: A consolidated-drained tri-axial test was conducted on a normally consolidated clay. The results are as following: confining stress, G3 = 150 kN/m² and deviator stress, (Aod)t = 150 kN/m². i) Determine angle of friction, q; ii) Determine angle 0 that the failure plane makes with the major principal plane; iii) Find the normal stress and the shear stress ty on the failure plane; and iv) Determine the effective normal stress on the plane of maximum shear stress. Express your results in two decimal places.