1. Chicago District; US Army Corps of Engineers; Chicago IL 60606 USA
2. Department of Civil and Materials Engineering; University of Illinois at Chicago; Chicago IL 60612 USA
3. Department of Civil and Environmental Engineering; University of Tennessee; Knoxville TN 37996-2313 USA
4. Department of Civil and Environmental Engineering; University of Illinois at Urbana-Champaign; Urbana IL 61801-8039 USA