A 8m high retaining wall supports a 5.5m deep sand $(\gamma_d = 18.5\…

Question

A 8m high retaining wall supports a 5.5m deep sand $(\gamma_d = 18.5\text{ kN/m}^3, \varnothing = 34^0)$ overlying a saturated sandy clay $(\gamma_{sat} = 20.3\text{ kN/m}^3, \varnothing=28^0, C=17\text{ kPa})$. The ground water is located at the interface of two layers. Sketch the lateral stress distribution up to a depth of 8m for an active condition.