ABSTRACT
Example 11.14 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) From Eq (11.69a)
The lateral earth pressure Ph at depth 4 m is 2q
Ph =-(13-sinf3cos 2a) 1r
= 2 x 60 [18.44 x 3.14 _ sin 18.440 cos 2 x 36.9] =8.92 kN/m 2 3.14 180
(b) From Eq. (11.69b)
Ph = 9~[H(a2 -a1)] where, q = 60 kN/m2, H = 10 m
II( 2 m. 11(2 m. I =A =B
Figure Ex. 11.14
