1. Structural Engineer, The Prestressed Group, 4955 Walker Rd., Windsor ON, Canada N9A 6M6; formerly, Ph.D. Student, Dept. of Civil and Environmental Engineering, Univ. of Windsor, Windsor ON, Canada N9B 3P4 (corresponding author).
2. Professor Emeritis, Dept. of Civil and Environmental Engineering, Univ. of Windsor, 401 Sunset, Windsor ON, Canada N9B 3P4.
3. Professor Emeritus, Dept. of Civil and Environmental Engineering, Univ. of Windsor, 401 Sunset, Windsor ON, N9B 3P4 Canada.