1. Graduate Student, Glenn Dept. of Civil Engineering, Clemson Univ., 135 Lowry Hall, Clemson, SC 29634, US, e-mail: saurabp@g.clemson.edu
2. Assistant Professor, Glenn Dept. of Civil Engineering, Clemson Univ., 200 Lowry Hall, Clemson, SC 29634, US (Corresponding author), e-mail: sez@clemson.edu