A soil profile consists of a 6 m thick layer of medium dense sand over 20 m of loose silty sand and gravel over 15 m of dense sand. The total unit weights of the three soil strata are 19.5 kN/m, 18.6 kN/m, and 21.4 kN/m, respectively. The water table is at a depth of 4 m below the ground surface. Assume that the total unit weight of the upper medium dense sand layer is the same above and below the water table. Sketch the soil profile showing the water levels, soil strata, etc. Note that this is a very important step in understanding and visualizing all the different levels and strata. b. Find the total stress (0), pore water pressure (u), and effective stress (') at 5 m, 15 m, and 35 m. At 5m: = At 15m: o At 35m: o= kN/m www kN/m www kN/m ww u= u= u= kN/m mmm kN/m mm kN/m o'= o'= o'= kN/m www kN/m mmm kN/m mmm c. Plot the total stress (o), pore water pressure (u), and effective stress (o') with depth on a sketch of the soil profile.