1. Former Graduate Student, Dept. of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India.
2. Professor, Dept. of Civil Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India (corresponding author).
3. Professor, Dept. of Mathematics and Statistics, Indian Institute of Technology Kanpur, Kanpur 208016, India.
4. V. R. Techniche Consultants (P) Ltd, Noida, U.P. 201301, India.