1. Ph.D. Candidate, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29634.
2. Distinguished Professor, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29634 (corresponding author).
3. Assistant Professor, Dept. of Civil Engineering, Clemson Univ., Clemson, SC 29634.
4. Vice President of Engineering, Dept. of Engineering, National Concrete Masonry Association, 13750 Sunrise Valley Dr., Herndon, VA 20171.