1. Reader, Dept. of Civil Engineering, Aligarh Muslim Univ., Aligarh, India.
2. Associate Professor, Dept. of Civil Engineering, Indian Institute of Technology Roorkee (formerly Univ. of Roorkee), India.
3. Professor Emeritus, Dept. of Civil Engineering, Indian Institute of Technology Roorkee (formerly Univ. of Roorkee), India.