An anchored sheet pile wall is to support a mass of cohesionless soil with a horizontal surface up to a height of 6.0 m. The anchor ties are 1.25 m below the top of the retained soil. The depth of embedment of the sheet pile wall is 3.75m. The retained soil has a density of 1.9 g/cm and angle of internal friction of 30. i. Evaluate the active thrust and passive resistance acting on the wall, together with their points of action. ii. With the anchor ties at the position shown, what is the fraction of the ultimate passive resistance on the embedded length of the sheet pile wall that must be mobilized to balance the active thrust? iii. Calculate the maximum force in the anchor ties HINT: Consider taking moments about the position of the anchor ties