1. Department of Irrigation and Reclamation, Faculty of Soil and Water Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj, Tehran, Iran
2. Department of Civil Engineering and Center of Excellence for Fundamental Studies in Structural Mechanics, Iran University of Science and Technology (IUST), Tehran, Iran
3. Department of Civil and Environmental Engineering, and Department of Biological and Agricultural Engineering, University of California, 139 Veihmeyer Hall (LAWR), University of California, Davis, CA 95616-8628, USA