1. Ph.D. Candidate, Lyles School of Civil Engineering, Purdue Univ., West Lafayette, IN 47907-2051; presently, Assistant Professor, School of Civil and Construction Engineering, Oregon State Univ., Owen Hall, Room 338, 1501 SW Campus Way, Corvallis, OR 97331 (corresponding author).
2. Professor, Lyles School of Civil Engineering, Purdue Univ., West Lafayette, IN 47907-2051.