A $400$ kN$/$m load is supported on a $2\mathrm{.}5$ m wide strip footing $($with Df $=2\mathrm{.}0$ m$).$ Figure below show CPTu test results at the site with normally consolidated clean sands and interbedded silt. $(40$ points$)$

Use $\backslash$gamma $=17\mathrm{.}5$ kN$/$m$3,\backslash$gamma sat $=20\mathrm{.}5$ kN$/$m$3,$ and $\backslash$gamma concrete $=23\mathrm{.}7$ kN$/$m$3,$ as needed.

Assume qt $=$ qc for clean saturated sands in this case.

Use Schmertmann$$s method $(1978)$ to

Compute the settlement of clean sands immediately after construction.

Estimate the elastic settlement of soil after $5$ years of construction.