1. Associate Professor, Dept. of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee-247667 (UA), India (corresponding author).
2. Research Scholar, Dept. of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee-247667 (UA), India.
3. Emeritus Fellow, Dept. of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee-247667 (UA), India.