1. Prof. of Struct. Engrg., Cornell Univ., Ithaca, N.Y.
2. Prof. of Civ. Engrg., Princeton Univ., Princeton, N.J.
3. Prof. Leader, SDRC-Engrg. Services Gmbh., Wiesbaden, West Germany
4. Former Grad. Student, Dept. of Civ. Engrg., Princeton Univ., Princeton, N.J.