[1] Michigan Technol Univ, Dept Civil & Environm Engn, Houghton, MI 49931 USA
[2] Burns & McDonnell, Aviat & Fed Grp, Kansas City, MO 64141 USA
[3] Alvi Associates Inc, Towson, MD 21204 USA
[4] Struct Workshop Inc, Providence, RI 02906 USA
[5] Calif State Univ Los Angeles, Dept Civil Engn, Los Angeles, CA 90032 USA