$[6\mathrm{.}68/20$ Points$]$

DASPRINCGEOENG$1010\mathrm{.}16\mathrm{.}019.$

The plan of a flexible rectangular loaded area is shown in the figure below. The uniformly distributed load on the flexible area, $a,$ is $111k\frac{N}{m^2}.$ Determine the increase in the vertical stress, ${}_z($in $k\frac{N}{m^2}),$ at a depth of $z=2m$ below the following. Use this table as needed.

$($a$)$ Point $A$

$k\frac{N}{m^2}$

$($b$)$ Point $B$

$k\frac{N}{m^2}$

$($c$)$ Point $C$

kN$/$m$^2$