1. Research Associate, Quality Engineering Solutions, Inc., 405 Water St., PO Box 3004, Conneaut Lake, PA 16316 (corresponding author).
2. Professor, Dept. of Civil and Coastal Engineering, Univ. of Florida, 365 Weil Hall, PO Box 116580, Gainesville, FL 32611-6580.
3. Quality Engineering Solutions, Inc., 405 Water St., PO Box 3004, Conneaut Lake, PA 16316.