1. Associate Professor, Dept. of Civil Engineering, Indian Institute of Technology, Guwahati, Assam 781039, India (corresponding author).
2. Former Undergraduate Student, Dept. of Civil Engineering, Indian Institute of Technology, Guwahati, Assam 781039, India.
3. Professor, Dept. of Civil and Resource Engineering, Dalhousie Univ., Halifax, NS, Canada B3J1Z.