1. The normal and shear stresses acting on two perpendicular planes are shown in the figure below. The following calculations are requested (6 Marks):

• Estimate the major and minor principal stresses
• Find the location of the Pole of planes (rough estimation)
• Graphical estimation of the Pole of planes (see figure above)
• If the Mohr circle represents the failure stress of a soil element, estimate the friction angle (assuming c=0)
• Obtain the angle formed between the failure plane and the major principal stress plane

pls help me ASAP thank you.

Z 516 kPa 200 kPa 1000 kPa 150 le Z 516 kPa 200 kPa 1000 kPa 150 le