1. Associate Member, ASCE
2. Fellow, ASCE
3. Asst. Prof., Dept. of Civ. Engrg., Valparaiso Univ., Valparaiso, IN 46383 (corresponding author).
4. Joseph T. and Rose S. Ling Professor and Head, Dept. of Civ. Engrg., Univ. of Minnesota, Minneapolis, MN 55454. E-mail: gulli0003@umn.edu