Q$2(25$ Pts$).$ The plan view of an existing factory building located on a thick homogeneous clay

layer is shown in the figure below. The pressure from this building is given as $200k\frac{N}{m^2}.$ The

axis of a tunnel is also shown on the same figure.

Figure Q$2\mathrm{.}1$ Plan View

As shown in the figure, it is desired to construct a storage silo with a diameter of $12m$ and a

pressure of $100k\frac{N}{m^2}.$ If this silo is built; calculate the stress increase at $6m$ depth below point

G$.$