1. Ph.D. Student, Dept. of Civil, Environmental, and Construction Engineering, Univ. of Central Florida, Orlando, FL 32816-2450; Teaching Faculty, Dept. of Civil Engineering, Univ. of Kufa, Najaf 54003, Iraq.
2. Associate Professor, Dept. of Civil, Environmental, and Construction Engineering, Univ. of Central Florida, Orlando, FL 32816-2450 (corresponding author).