1. M.Tech. Student, Dept. of Civil Engineering, Geotechnical Engineering Division, IIT Kanpur, Kanpur 208016, India. E-mail: shub_goel@yahoo.com
2. Assistant Professor, Dept. of Civil Engineering, Geotechnical Engineering Division, IIT Kanpur, Kanpur 208016, India (corresponding author). E-mail: nrpatra@iitk.ac.in