1. Colonel, Air Defense Forces, Engineering and Housing Directorate, P.O. Box 60834, Riyadh 11555, Kingdom of Saudi Arabia. E-mail: algaaye@iit.edu
2. Professor, Dept. of Civil and Architectural Engineering, Illinois Institute of Technology, Chicago, IL 60616 (corresponding author). E-mail: arditi@iit.edu
3. Assistant Professor, Faculty of Civil Engineering, Istanbul Technical Univ., Maslak, Istanbul 34469, Turkey. E-mail: gpolat@ins.itu.edu.tr