1. Department of Civil & Environmental Engineering, Saint Joseph University of Beirut, Riad El Solh, Beirut 1514, Lebanon
2. Department of Civil and Environmental Engineering, American University of Beirut, Riad El Solh, Beirut P.O.Box 11-0236, Lebanon
3. Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ 08540W, USA
4. Department of Civil and Environmental Engineering, Khalifa University, Abu Dhabi 127788, United Arab Emirates