1. Rooney Family Assistant Professor, Dept. of Civil Engineering and Geological Sciences, Univ. of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, IN 46556 (corresponding author).
2. Robert M. Moran Professor, Univ. of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, IN 46556.
3. Graduate Student, Univ. of Notre Dame, 156 Fitzpatrick Hall, Notre Dame, IN 46556.