1. School of Civil Engineering, Purdue University, West Lafayette, Indiana 47907-1284, USA, Telephone: 1/317-494-0697, Telefax: 1/317-496-1364,
2. School of Civil Engineering, Purdue University, West Lafayette, Indiana 47907-1284, USA, Telephone: 1/317-494-0697, Telefax: 1/317-496-1364
3. Graduate Research Assistants, School of Civil Engineering, Purdue University, West Lafayette, Indiana 47907-1284, USA, Telephone: 1/317-494-0697, Telefax: 1/317-496-1364