1. Invited Lecturer, Payame Noor Univ., Yasouj Center, Yasouj, Iran; Dept. of Civil Engineering, College of Engineering, Yasouj Univ., P.O. Box 353, 75918-74831 Yasouj, Iran.
2. Assistant Professor of Hydraulic Structures, Dept. of Soil Science, College of Agriculture, Yasouj Univ., P.O. Box 353, 75918-74831 Yasouj, Iran (corresponding author).
3. Assistant Professor of Geotechnical Engineering, Dept. of Civil Engineering, College of Engineering, Yasouj Univ., P.O. Box 353, 75918-74831 Yasouj, Iran.