1. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of South Carolina, 300 Main St., Columbia, SC 29208 (corresponding author).
2. Professor, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, Austin, TX 78712.
3. Retired, Dept. of Civil, Architectural and Environmental Engineering, Univ. of Texas at Austin, Austin, TX 78712.
4. Staff Engineer, Whitlock, Dalrymple, Poston and Associates, 402 W. 7th St., Austin, TX 78701.
5. Vice-President, Technical Services, High Steel Structures, Inc., 1915 Old Philadelphia Pike, P.O. Box 10008, Lancaster, PA 17505.