1. Professor, Dept. of Civil and Environmental Engineering, Colorado State Univ., Fort Collins, CO 80523. E-mail: gutkowsk@engr.colostate.edu
2. Structural Engineer, KLNA, Loveland, CO. E-mail: tjshilling@klaa.com
3. Assistant Professor, Dept. of Civil Engineering Technology, Metro State College at Denver, Denver, CO 80217-2972. E-mail: jbalogh@mscd.edu
4. Associate Professor, Dept. of Mechanical Engineering, Colorado State Univ., Fort Collins, CO 80526. E-mail: don@engr.colostate.edu