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The state of stress at a point in a soil beneath a level ground surface consists of a major principal stress of 70 kPa and a minor principal stress of 25 kPa. The major principal stress acts in the vertical direction. (a) Draw the Mohr's circle of stress and show the pole point (origin of planes). (b) Determine the maximum shear stress and calculate the orientation angle (relative to horizontal) of the plane of positive maximum shear stress. (c) Determine the normal stress and shear stress on a plane that makes an angle of -20° (i.e., 20° clockwise) relative to the horizontal plane.

Determine stress components acting on the inclined plane AB shown in Figure 1. The directions of the stress components are as indicated in Figure 1. 50 MPa A 30 МРа 70 MPa 50° B

The figure depicts the state of plane stress at a point. Sketch Mohr's circle 20,, o,, 02, and TMax for stress. Indicate on your drawing the following InPlane 13 ksi 2.5 ksi 25 ksi 25 ksi 13 ksi Determine the following: 01. O2. 0p. |TMaxl-