1. Research Scientist, Dept. of Civil Engineering and Natural Hazards, Univ. of Natural Resources and Applied Life Sciences, Vienna A-1190, Austria; presently, Associate Researcher, Dept. of Civil and Environmental Engineering, ATLSS Center, Lehigh Univ., 117 ATLSS Dr., Bethlehem, PA 18015-4729 (corresponding author).
2. Professor and Fazlur R. Khan Endowed Chair of Structural Engineering and Architecture, Dept. of Civil and Environmental Engineering, ATLSS Center, Lehigh Univ., 117 ATLSS Dr., Bethlehem, PA 18015-4729.
3. Professor, Dept. of Civil Engineering and Natural Hazards, Univ. of Natural Resources and Applied Life Sciences, Vienna A-1190, Austria.