1. Former Ph.D. Student (QIP), Dept. of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India; currently, Dept. of Civil Engineering, National Institute of Technology Silchar, Silchar, Assam 788 010, India., prajbongshi@yahoo.com
2. Associate Professor, Dept. of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India (corresponding author).