Rankine Theory: An 14-ft-high cantilever retaining wall is backfilled with a soil that has a y=103 pcf, Ysat = 127 pcf, o' =28 and c' = 0. (a) If water ponds at mid-height behind the wall, calculate the Rankine active force per unit length of wall and (b) Estimate the location of the lateral thrust measured from the bottom of the wall. (Problem 13.13, Das and Sobhan, 2014).

Determine the active and passive force acting on a 3 meter high wall that supports clay with an undrained shear strength of 100 kPa and a unit weight of 19.20 kN/m

The following figure shows a section of an anchored retaining wall embedded into a saturated stiff clay layer. The sand has a unit weight of = 18 kN/m³, c' = 0 kPa and o' = 34º. The clay has a unit weight of = 20 kN/m³, c₁ = 80 kPa and = 0°. A uniform pressure of 40 kPa is applied on the soil surface. The short term stability of the wall is considered in an undrained analysis. Use the Rankin's theory of lateral earth pressure to determine the active and passive horizontal stresses. You should apply the requirements of AS 4678 and the partial factors of safety method in estimation of soil pressures. Assume the soil is in-situ and use a structural classification factor of ₁ = 1. 3m 1m Water table 1.5m 40 kPa Not to Scale Sand Clay Ta