Hydropower Engineering past question

A concrete gravity dam has the following data: Maximum water level = 550.00; Bed level = 470.00; RL Top of Dam = 554.00; The d/s slope of 0.67:1 and starts at RL of 545.00; US face is vertical; Centre line of drainage gallery – 8.0 m from the u/s face; Consider only weight, water pressure and uplift. Calculate the maximum vertical stresses at the toe and heel of the dam. Also calculate factor of safety against sliding and over turning. Assuming 100% uplift pressure at heel, 50% at drainage gallery and zero at the toe. Take μ=0.75. [10]