Problem $1$

A clay sample was retrieved from the depth of $6m$ below the ground surface, as illustrated in

the figure below. Then, consolidation testing was conducted on the sample. The lab data was

presented in the table below.

a$)$ Plot the laboratory consolidation test curve.

b$)$ Reconstruct and plot the field curve using the Schmertmann's method. $($see textbook

page $346-347).$

c$)$ Determine preconsolidation stress, $C_C,$ and $Cr.$

d$)$ Estimate the consolidation settlement of the clay layer when an additional stress of $300$kPa were added to the soil layer.