A retaining wall (frictionless) is shown in Figure 1. a) Plot the variation of active and passive lateral pressures with depth for soil profile shown in Fig.1 (6 marks) b) Determine the forces due to surcharge in active & passives side (3 marks) c) Compute Total active force on the wall if the wall is 7m long (4 marks) d) Evaluate the lateral stability of the wall by comparing the forces acting on the wall (5 marks) q=XkPa (Surcharge) 0.3X m Passive Side Xm q= 25 kPa (Surcharge) Sand Ybulk 17.0kN/m, ' = 30 Active Side Water table Sand Ysar -21.5kN/m, 0' = 30 Figure 1: Retaining Wall