A retaining wall x m high was designed to stabilize a horizontalground surface. The back
of the wall is inclined 15 o to vertical direction and can beassumed rough with interfacefrictionangleofxo.Thesoilparametersare?' =33o ,? =18kN/m3,?=20kN/m3.
Assume no seepage effects.
(a) Draw a diagram to show the given wall dimensions, relevantinclinations and the direction of the active force on the wall.
(b) Calculate lateral force on the wall assuming the groundwater table is at the base of the wall.
(c) After a flood, the ground water table rises 0.5m above thewall top surface. Calculate the lateral force on the wall after theflood.
(d) If the weight of the wall is (500+ x) kN/m, is the wall safeagainst sliding after flooding event? Please show yourcalculations. . the value of x is 28
