1. Assistant Professor, School of Civil and Construction Engineering, Oregon State Univ., 101 Kearney Hall, Corvallis, OR 97331 (corresponding author).
2. Professor, Dept. of Civil and Environmental Engineering; and Director, Project Production Systems Laboratory, 212 McLaughlin Hall, Univ. of California, Berkeley, CA 94720-1712.
3. Research Director, Project Production Systems Laboratory, 214 McLaughlin Hall, Univ. of California, Berkeley, CA 94720-1712.