1. Assistant Professor, Dept. of Civil Engineering, Rajkiya Engineering College, Azamgarh, Uttar Pradesh 276201, India (corresponding author).
2. Professor, Dept. of Civil Engineering, National Institute of Technology, Patna, Bihar 800005, India.
3. Assistant Professor, Dept. of Mathematics, Rajkiya Engineering College, Azamgarh, Uttar Pradesh 276201, India.