A $2$ m wide square foundation is placed at a depth of $1\mathrm{.}5$ m$,$

in a very thick homogeneous sand deposit where qc $=10$ MN$/$m$2$ and g$=18\mathrm{.}5$ kN$/$m$3.$ The stress level at the foundation is $140$ kN$/$m$2.$ Estimate the settlement in $25$ years, using the method of Schmertmann et al$.[$Eq$.(9\mathrm{.}30)].$ How much of this settlement is due to creep?