A 12 m-long and 800 mm-diameter drilled pier is constructed in a clayey soil with a1.5 m-diameter bell at the base. The top 7 m of the clay has an average Cu of 40 Kpa and the clay underneath has a Cu of 90 Kpa. Estimate its load carrying capacity, assuming a safety factor of 2.5 . for problem9 you are not given enough information to do an effective stress analysis (i.e. what is the friction angle, where is the water table located?), so only do a total stress analysis for the problem.