1. Senior Pavement Engineer, Tensar International Corporation, 5883 Glenridge Dr. Suite 200, Atlanta, GA 30328; and, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, Newmark Laboratory, 205 North Mathews Ave., Urbana, IL 61801.
2. Professor, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205 North Mathews Ave., Urbana, IL 61801 (corresponding author).
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana-Champaign, 205 North Mathews Ave., Urbana, IL 61801.