Problem $12\mathrm{.}1$

A soil profile with three layers is shown below. The depth of the layers and its wet unit weights are also shown. The clay layer has the following properties. The consolidation settlement $($in$.)$ in the clay layer due to the new construction is most nearly:

The clay layer has a pre$-$consolidation pressure of $1,300psf$

Liquid limit of $40\%$

The coefficient of consolidation $=3{10}^{-3}i\frac{n^2}{m}in$

The increase in pressure due to the new construction $=500psf$

$,$ The void ratio of clay $=0\mathrm{.}9$

A$.1\mathrm{.}72$

B$.1\mathrm{.}62$

C$.1\mathrm{.}82$

D$.2\mathrm{.}21$