1. Graduate Research Assistant, Univ. of Delaware, Newark, DE 19716; formerly, Graduate Research Assistant, Oregon State Univ., Corvallis, OR 97331.
2. Professor and Slayden Construction Faculty Fellow, School of Civil and Construction Engineering, Oregon State Univ., Corvallis, OR 97331 (corresponding author).
3. Senior Mechanical Engineer, Oregon DOT, 355 Capitol St. NE, MS 11, Salem, OR 97301.