1. Visiting Assistant Professor, Lyles School of Civil Engineering, Purdue Univ., West Lafayette, IN 47907-2051 (corresponding author).
2. Ph.D. Student, Lyles School of Civil Engineering, Purdue Univ., West Lafayette, IN 47907-2051.
3. Professor and Head, Division of Construction Engineering and Management; and Professor, Lyles School of Civil Engineering, Purdue Univ., West Lafayette, IN 47907-2051.