1. School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907.
2. School of Civil Engineering, Purdue Univ., 550 Stadium Mall Dr., West Lafayette, IN 47907; and Ray W. Herrick Laboratories, School of Mechanical Engineering, Purdue Univ., 140 S. Martin Jischke Dr., West Lafayette, IN 47907 (corresponding author).
3. Faculty of Science and Technology, Free Univ. of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy.
4. Dept. of Design and Planning in Complex Environment, Univ. IUAV of Venezia, Santa Croce 1957, Ca’ Tron, 30135 Venice, Italy.