1. Professor, Dept. of Civil and Architectural Engineering, Illinois Institute of Technology, Chicago, IL 60616. E-mail: arditi@iit.edu
2. Graduate Student, Dept. of Civil and Architectural Engineering, Illinois Institute of Technology, Chicago, IL 60616. E-mail: ayrameh@iit.edu
3. Associate Professor, Dept. of Civil and Architectural Engineering, Illinois Institute of Technology, Chicago, IL 60616. E-mail: shi@iit.edu