Problem #$2$

A reinforced concrete retaining wall is shown in the figure below. The coefficient of friction between the base and the foundation soil is $0\mathrm{.}48$ and the soil bearing capacity under the base is $500k\frac{N}{m^2}.$ Check the structural adequacy of the wall against stability failure, including soil bearing pressure check and overturning check.

$K_a=\frac{1-sin}{1+sin}=0\mathrm{.}27$