1. Associate Professor, Dept. of Civil Engineering, Anurag Univ., Hyderabad, Telangana 500088, India; formerly, Research Scholar, Dept. of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India (corresponding author).
2. Professor, Dept. of Civil Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India.