1. Graduate Student, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29630-0911.
2. Assistant Professor, Dept. of Civil Engineering, Clemson Univ., 218 Lowry Hall, Clemson, SC 29630-0911.
3. Professor and Chairman, Dept. of Civil Engineering, Clemson Univ., 110 Lowry Hall, Clemson, SC 29630-0911.