1. Associate Professor, Dept. of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India (corresponding author).
2. Research Fellow, Dept. of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.
3. Formerly, Research Fellow, Dept. of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.