$2.$ Coefficient of Volume Change mv$.$

For each of the four pressure increments compute the coefficient of volume chang $($kPa$-1)$ and coefficient of permeability $($m$/$sec$).$

$3.$ Void ratio $-$ Log $($pressure$)$ plot

Calculate the void ratio at the start of the first test, and at the completion of primary

consolidation for each load increment, then plot these void ratios against the logarithm $($base $10)$ of the applied pressure. From this plot estimate

i$.$ Compression Index Cc

ii$.$ Recompression Index Cr

iii. Preconsolidation pressure

iv$.$ Over Consolidation Ratio of the in$-$situ soil. Discuss your results.

Extended questions:

A site containing a similar reddish$-$brown clay is being investigated for development. It consists of a $5$ m thick sand layer $($dry density$=1750$ kg$/$m$3)$ which overlays the silty clay layer $(4$ m thick$).$

The bottom of the clay is marked by an impermeable rock. Water table was found to be at $6$ m from the ground surface. If a proposed structure on the site is expected to apply a surcharge of $50$ kPa, what would be the ultimate primary consolidation settlement?

State your assumptions. Comment on your answer and discuss the geotechnical solutions available.

Please provide a detailed answer with clear equations and answers. thanks. PLease answer all.