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Rigid retaining wall problem example 2

A railway line is laid parallel to a rigid retaining wall as shown in Fig. Ex. 11.14. The width of the
railway track and its distance from the wall is shown in the figure. The height of the wall is 10m.
Determine
(a) The unit pressure at a depth of 4m from the top of the wall due to the surcharge load
(b) The total pressure acting on the wall due to the surcharge load
Solution
(a)FromEq(11.69a)
The lateral earth pressure ph at depth 4 m is
Rigid retaining wall problem example solution