1. Structural Engineer, Walker Parking Consultants, 17049 El Camino Real, Ste 202, Houston, TX 77058.
2. Structural Engineer, EAC Consulting, Inc., 815 NW 57th Ave., Suite 402, Miami, FL 33126.
3. Professor and Dean, College of Engineering and Computing, Florida Int. Univ., Miami, FL 33174 (corresponding author).