1. Department of Civil Engineering, College of Engineering, University of Sulaimani, Sulaimani, Iraq
2. Department of Civil Engineering, Komar University of Science and Technology, Sulaimani, Iraq
3. Department of Civil Engineering, College of Engineering, University of Duhok, Duhok, Iraq
4. Department of Civil Engineering, University of Halabja, Halabja, Iraq
5. Department of Civil Engineering, University of Garmian, Kalar, Iraq