1. 1 Department of Civil and Infrastructure Engineering, Faculty of Engineering and Technology , Al Zaytoonah University of Jordan , Amman , Jordan .
2. 2 Civil Engineering Department, Faculty of Engineering , Al Albayt University , Mafraq , Jordan .
3. 3 Civil Engineering Department, Faculty of Engineering , Petra University , Jordan .
4. 4 Department of Tourism and Archaeology, Faculty of Humanities , An-Najah National University , Nablus , Palestine .