1. Graduate Student, Dept. of Civil and Environmental Engineering, Stilwell Hall SH 108, Cleveland State Univ., 2121 Euclid Ave., Cleveland, OH 44115-2214.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Stilwell Hall SH 108, 2121 Euclid Ave., Cleveland State Univ., Cleveland, OH 44115-2214 (corresponding author).