1. Associate Professor, Dept. of Civil and Environmental Engineering, Virginia Tech., 105D Patton Hall, Blacksburg, VA 24060 (corresponding author).
2. Assistant Project Manager, Building Envelope Consultants and Scientists LLC, 2400 Boston St., Suite 202-H, Baltimore, MD 21224.
3. Professor and Dean, Dept. of Civil and Environmental Engineering, Iowa State Univ., 4100 Marston Hall, Ames, IA 50011.