Q$.3$ Given: T$-$ shape foundation as shown in figure is loaded with a uniform load of $120k\frac{N}{m^2}.$ Required: the increment in vertical stress at point $(P)$ at a depth of $5m.$

$\backslash$table$[[m,0\mathrm{.}6,0\mathrm{.}6,0\mathrm{.}6],[n,0\mathrm{.}3,1\mathrm{.}2,0\mathrm{.}6],[I_r,0\mathrm{.}0629,0\mathrm{.}1431,0\mathrm{.}1069],[9m$