1. Assistant Professor, Australian College of Kuwait, Block 5, Building 2, West Mishref 40005, Kuwait (corresponding author).
2. Greenwood Department Chair and Professor, Civil, Construction and Environmental Engineering, Iowa State Univ., 390 Town Engineering, 813 Bissell Road, Ames, IA 50014; formerly, Professor, Univ. of Nevada Reno, 1664 N. Virginia Street, Reno, NV 89557-0258.
3. Professor, Univ. of Nevada Reno, 1664 N. Virginia St., Reno, NV 89557-0258.