1. Dept. of Civ. Engrg. and Engrg. Mechanics, Columbia Univ., New York, N.Y.
2. Research Engr., IIT Research Institute, Chicago, Ill.
3. Structural Civ. Engr., Lodi, Calif.
4. Research Engr., Engrg. Design Div., Alcoa Research Labs., New Kensington, Pa.
5. Partner, AICA-SACMAG, Engineer-Architects, San Jose, Costa Rica
6. Engr., David Taylor Model Basin, Chattanooga, Tenn.; formerly, Asst. Prof., Engrg. Dept., Univ. of Chattanooga, Chattanooga, Tenn.