1. Lieutenant Colonel/Engineer, Head of Technical Support Section, GDMW/MODA, P.O. Box 46539, Riyadh 11542, Kingdom of Saudi Arabia.
2. Professor, Illinois Institute of Technology, Dept. of Civil and Architectural Engineering, Chicago, IL 60616.
3. Visiting Scholar, Illinois Institute of Technology, Dept. of Civil and Architectural Engineering, Chicago, IL 60616.