The foundation is a concrete, rectangular spread footing. Using the classical method for the single silty clay layer, $($take $3$ layers of soil from the bottom of foundation to the rock layer$)$ make consolidation settlement calculation. Length of the foundation is $5m,$ width of the foundation is $2m.$ For the saturated clay, undrained shear strength $=S_w=50k\frac{N}{m^2}.$ Take $x_{\text{c}\text{o}\text{n}\text{c}\text{e}\text{l}\text{c}}=24k\frac{N}{m^3},Y_{\text{w}\text{a}\text{t}\text{e}\text{r}}=9\mathrm{.}8k\frac{N}{m^3}.$ The groundwater table is $0\mathrm{.}3m$ below the ground level.

$(2\mathrm{.}5pts$

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