It is proposed to construct a $B+G+4$ residential building at a site having Soil profile

shown in figure below. For basement construction, Soil will be excavated till $2$ m below

the existing ground level. Footing is to be placed at a depth of $2$ m below the lowered

ground level. Assume average unit weight of soil to be $18k\frac{N}{m^3}.$ Determine the

$SB\frac{C}{?}$ allowable bearing pressure of a square footing of size $3$ m $.$ Take seat of settlement to

be $2$B$.$ Use FOS of $3$ against shear failure and an allowable settlement of $37\mathrm{.}5$ mm $.$ Use i$)$

IS $6403$ and ii$)$ Tengs recommendation, for shear failure criteria and settlement criteria.

$[13$ marks$]$

Figure Not to Scale