1. Graduate Student, Dept. of Civil and Environmental Engineering, Lehigh Univ., Bethlehem, PA 18015-3176.
2. Professor, Dept. of Civil and Environmental Engineering, Lehigh Univ., Bethlehem, PA 18015-3176.
3. Research Structural Engineer, Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899-8611.
4. NIST Fellow, Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899-8611.