1. Research Assistant, School of Civil and Construction Engineering, Oregon State Univ., Kearney Hall, 1491 SW Campus Way, Corvallis, OR 97331; formerly, M.S. Student, Dept. of Civil Engineering, Imam Khomeini International Univ., 3414916818 Qazvin, Iran (corresponding author).
2. Assistant Professor, Dept. of Civil Engineering, Imam Khomeini International Univ., 3414916818 Qazvin, Iran.