Using the following methods, determine the increase in vertical

stress at a depth of $5m$ below the three points shown in Figure $1$

$($i$.$e$.,$ middle of the foundation, edge of the foundation, and corner of

the foundation$).$

Treat the column load as a point load

Using Boussinesq's method, treat the foundation as a uniformly

loaded rectangular area.

$2$:$1$ stress distribution estimation method