1. Prof. and Dean of Faculty of Applied Science, Univ. of British Columbia, Vancouver, Canada
2. Post Doctoral Fellow, Dept. of Civ. Engrg., Univ. of British Columbia, Vancouver, Canada; Lecturer in Civ. Engrg., Cambridge Univ., Cambridge, England
3. Partner, Cook, Pickering and Doyle Ltd., Consulting Engrs., Vancouver, Canada