1. Assistant Professor, Civil Engineering Dept., Auburn Univ., 238 Harbert Center, Auburn, AL 36849-5337.
2. Graduate Student Researcher, Civil Engineering Dept., Auburn Univ., 238 Harbert Center, Auburn, AL 36849-5337.
3. Associate Professor, Civil Engineering Dept., Auburn Univ., 238 Harbert Center, Auburn, AL 36849-5337.