Question:

Plot the following data and determine the pre$-$consolidation pressure and the modified compression index.

$\backslash$table$[[\backslash$table$[[\%$ Consolidation$],[($compression is $+)]],$Pressure $($kPa$)],[0\mathrm{.}08,5],[0\mathrm{.}10,10],[0\mathrm{.}11,20],[0\mathrm{.}24,40],[0\mathrm{.}89,80],[1\mathrm{.}74,160],[3\mathrm{.}81,320],[7\mathrm{.}32,640],[7\mathrm{.}30,320],[7\mathrm{.}12,160],[6\mathrm{.}55,80],[6\mathrm{.}67,160],[6\mathrm{.}91,320],[7\mathrm{.}59,640],[11\mathrm{.}50,1280],[15\mathrm{.}83,2560],[20\mathrm{.}16,5120],[19\mathrm{.}68,1280],[18\mathrm{.}75,160],[17\mathrm{.}51,40],[13\mathrm{.}95,5]]$

Specimen's height is $25\mathrm{.}4mm,w_n=29\mathrm{.}3\%,{}_d=1\mathrm{.}50M\frac{g}{m^3}.$ Sample is from a depth of $10\mathrm{.}7$ m from the ground surface.