$2-$Using the CPT data in figure below, a unit weight of $115pcf,$ and an overconsolidation ratio of $3,$ determine $($a$)$ soil behavior type $($b$){}^{\text{'}}$ using Kulhawy and Mayne correlation and $($c$)N_{60}$ for the soil between depths of $21$ and $23ft$ based on a groundwater depth of $15ft$ below the ground surface and average $q_c$ of $190tsf,$ average $R_f$ of $3\%$ and $u_2=0.$ Also, assume $a=0\mathrm{.}80,$ and $n=0\mathrm{.}411.$

Portion of CPT test of interest