Plot the stress (1) - strain (a) curve from the unconfined compression test results. The origin should be in the lower left corner of the plot with strain plotted on the horizontal axis and stress on the vertical axis. Determine the stress and strain at failure (qu, f) and mark the values on your plot. 2. Plot the Mohr's circle for the conditions at failure. Find the pole point (also called the origin of planes), label it, and show graphically how you would determine the orientation of the plane (or planes) with maximum shear stress. 3. Calculate the unconfined compressive strength (qu) and the undrained shear strength (su) in units of psf. 4. Very stiff clays that underlie the Houston area are typically fissured. We often find that unconfined compression tests produce unreasonably low estimates of shear strength. Why? 5. Calculate the undrained shear strength (su) from the laboratory vane shear test results. Show all calculations and report the results in units of psf. 6. Calculate the undrained shear strength (su) from the torvane and pocket penetrometer tests. Report the readings taken and any calculations used to convert the readings into su and into units of psf