A $3\mathrm{.}0m$ wide square foundation is placed at $1\mathrm{.}5m$ depth in sand where $=18\mathrm{.}5k\frac{N}{m^3}.$ The water table lies well below the foundation level. Under the applied pressure of $200k\frac{N}{m^2}$ at the foundation level, the settlement recorded was $14mm.$ Using the method of Shahriar et al$.(2014),$ calculate the expected additional settlement if the water table rises to:

The bottom of the foundation $($i$.$e$.,1\mathrm{.}5m$ below the ground surface$).$

A depth $1\mathrm{.}5m$ below the bottom of the foundation.

A depth $3\mathrm{.}0m$ below the bottom of the foundation.