1. M.Sc. Student, Dept. of Civil and Environmental Engineering, Mississippi State Univ., 501 Hardy Rd., 235 Walker Engineering Bldg., Mississippi State, MS 39762.
2. Associate Professor and Construction Engineering and Management Program Coordinator, Dept. of Civil and Environmental Engineering, Univ. of Tennessee, 851 Neyland Dr., 417 John D. Tickle Bldg., Knoxville, TN 37996 (corresponding author).
3. Associate Professor, Dept. of Agricultural Economics, Mississippi State Univ., 255 Tracy Dr., 102 Lloyd-Ricks Watson Bldg., Mississippi State, MS 39762.
4. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Univ. of Tennessee, 851 Neyland Dr., 324 John D. Tickle Bldg., Knoxville, TN 37996.