1. Assistant Professor, Civil Engineering Dept., Applied Science Univ., P.O. Box 926296, Amman 11931, Jordan (corresponding author). E-mail: dr-abuhammad@asu.edu.jo
2. Associate Professor, Dept., of Civil and Environmental Engineering, Univ. of Cincinnati, Cincinnati, OH 45221. E-mail: osalem@uc.edu
3. Professor and Head, Division of Construction Engineering and Management, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907-2051. E-mail: hastak@ecn.purdue.edu
4. Professor, Construction Management Program, School of Planning, Design and Construction, 113 Human Ecology Building, Michigan State Univ., East Lansing, MI 48824. E-mail: syalm@egr.msu.edu