1. A soil profile is shown in figure below. Calculate the total stress (0), pore water pressure (u), and effective stress (o') at points A, B, C, and D and present the values in the table below (5 pts). Thickness Im) Unit weight (kN/m Layer no. H = 3 H -4 H, = 5 Ya= 15 II II Yu- 16 Y 18 Layer I Dry sand Groundwater tahle Layer II Sand Layer III Cla Point Total Stress Pore Water Pressure Effective Stress D. B.