$2019$W$).$pdf

$7/15$

$100\%$

Refer to Figure $2.$ A square footing, $22m$ in size, supports a column load of $300kN.$ The soil characteristics are given in the figure. Field monitoring indicated that the foundation settlement was $6mm$ during the first $12$ months.

a$.$ Estimate the stress increase, ${}^{\text{'}}$ at the mid$-$depth of the clay layer due to the applied load using Newmark Chart $($see page $8).(8$ Marks$)$

b$.$ Estimate the primary consolidation settlement. $(8$ Marks$)$

c$.$ What is the degree of consolidation after $12$ months? $(2$ Marks, No partial Marks$)$

d$.$ Estimate the coefficient of consolidation for the pressure range. $(6$ Marks$)$

e$.$ How long will it take to achieve $90\%$ degree of consolidation? $(6$ Marks$)$

Figure $2$