1. Sr. Structural Engrg. Analyst, Sargent & Lundy, Engrs., Chicago, Ill.; formerly, Research Asst. Prof., Dept. of Civ. and Environmental Engrg., Washington Univ., Saint Louis, Mo.
2. Prof., Dept. of Civ. Engrg., Univ. of Waterloo, Waterloo, Ontario, Canada
3. Research Asst., Dept. of Civ. Engrg., Univ. of Waterloo, Waterloo, Ontario, Canada