1. M.Sc. Graduated Student, Dept. of Civil Engineering, Urmia Univ., 5756151818 Urmia, Iran.
2. Assistant Professor, Dept. of Civil Engineering, Urmia Univ., 5756151818 Urmia, Iran.
3. Assistant Professor, Dept. of Civil Engineering, Univ. of Guilan, P.O. Box 3756, 4199613776 Rasht, Iran (corresponding author).