1. Director, Construction Engineering and Management-Omaha, Univ. of Nebraska Lincoln, PKI 102D, 1110 South 67th St., Omaha, NE 68182 (corresponding author). E-mail: jgoedert@mail.unomaha.edu
2. Ph.D. Student, Dept. of Civil Engineering, Univ. of Nebraska Lincoln, PKI 108, 1110 South 67th St., Omaha, NE 68182. E-mail: pmeadati@mail.unomaha.edu