1. Assistant Professor, Dept. of Civil Engineering and Construction, Bradley Univ., 1501 W Bradley Ave., Peoria, IL 61625.
2. Former Graduate Student, Dept. of Mechanical Engineering, Bradley Univ., 1501 W Bradley Ave., Peoria, IL 61625.
3. Graduate Student, Dept. of Civil Engineering and Construction, Bradley Univ., 1501 W Bradley Ave., Peoria, IL 61625.
4. Assistant Professor, Civil Engineering Technology, Colorado State Univ.-Pueblo, 2200 Bonforte Blvd, Pueblo, CO 81001.
5. Professor, Dept. of Civil Engineering, The Univ. of New Mexico, MSC01 1070, Albuquerque, NM 87131.