1. Postgraduate Student, Dept. of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India 247668.
2. Assistant Professor, Dept. of Civil Engineering, National Institute of Technology Patna, Patna, Bihar, India 800005..
3. Associate Professor, Dept. of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India 247668 (corresponding author)..