1. Assistant Professor, Dept. of Civil Engineering, Indian Institute of Technology Delhi, New Delhi 110 016, India (corresponding author).
2. Engineer, Dept. Central Public Works, New Delhi 110001, India; formerly, Master of Technology Student, Dept. Civil Engineering, Indian Institute of Technology Delhi, India.
3. Professor, Dept. of Civil Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
4. Dogra Chair Professor, Dept. of Civil Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.