1. Assistant Professor, Dept. of Construction Science, Univ. of Texas at San Antonio, 501 W.César E. Chávez Blvd., San Antonio, TX 78207 (corresponding author).
2. Holland Professor and Director, Center for Advanced Construction Information Modeling, Rinker School of Construction Management, Univ. of Florida, P.O. Box 115703, Gainesville, FL 32611.