1. Structural Designer, HDR Engineering, Inc., 3 Gateway Center, Pittsburgh, PA 15222 (corresponding author).formerly, Research Assistant, Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, Pittsburgh, PA 15261.
2. Associate Professor and William Kepler Whiteford Faculty Fellow, Dept. of Civil and Environmental Engineering, Univ. of Pittsburgh, 949 Benedum Hall, Pittsburgh, PA 15261.