1. Emeritus Professor, Rinker School of Building Construction, Univ. of Florida, P.O. Box 115703, Gainesville, FL 32611.
2. Assistant Professor and Beavers Faculty Fellow, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado at Boulder, 428 UCB, 1111 Engineering Dr., Boulder, CO 80309 (corresponding author).
3. Former Graduate Student, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado at Boulder, 428 UCB, 1111 Engineering Dr., Boulder, CO 80309.