I Example $7\mathrm{.}4$

Consider a rectangular foundation $2m4m$ in plan at a depth of $1\mathrm{.}2m$ in a sand

deposit, as shown in Figure $7\mathrm{.}11$a$.$ Given: $=17\mathrm{.}5k\frac{N}{m^3}\frac{\text{;}}{b}ar(q)=145k\frac{N}{m^2},$ and the

following approximated variation of $q_c$ with $z$ :

Estimate the elastic settlement of the foundation using the strain influence factor method.

$($b$)$