1. Structural Engineer, Martin/Martin, Inc., 4251 Kipling, P.O. Box 4001, Wheat Ridge, CO 80034.
2. Professor of Civil Engineering, Dept. of Civil and Architectural Engineering, Univ. of Wyoming, P.O. Box 3295, Laramie, WY 82071.
3. Associate Professor of Civil Engineering, Dept. of Civil & Coastal Engineering, Univ. of Florida, 124 Yon Hall, Box 116580, Gainesville, FL 32611-2083.