1. Prof. of Civ. Engrg., Univ. of Roorkee, Roorkee, U.P., India
2. Lecturer in Civ. Engrg., Univ. of Roorkee, Roorkee, U.P., India
3. Scientist, School of Research and Training in Earthquake Engineering, Univ. of Roorkee, Roorkee, U.P., India; formerly Technical Teacher Trainee, Civ. Engrg. Dept., Univ. of Roorkee, Roorkee