1. Professor, Dept. of Civil Engineering, Univ. of Nevada, Reno, NV 89557.
2. Project Engineer, Neblett and Associates, Inc., Huntington Beach, CA 92649.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, CA 95616.
4. Graduate Student, Dept. of Civil Engineering, Univ. of Nevada, Reno, NV 89557.
5. Professor Emeritus, Dept. of Civil Engineering, Massachusetts Institute of Technology, Boston, MA 02139.