1. Associate Professor and Lyall Faculty Fellow, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado, Boulder, CO 80309 (corresponding author).
2. Assistant Professor, Dept. of Civil Engineering, Sharif Univ. of Technology, 1458889694 Tehran, Iran; formerly, Research Associate, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Colorado, Boulder, CO 80309.