1. Department of Civil Engineering, Montana State University, Bozeman, Montana 59717, USA, Telephone: 1/406-994-6522, Telefax: 1/406-994-6105,
2. Department of Civil Engineering, Bogazici University, 80815 Bebek, Istanbul, Turkey, Telephone: 90/212-263-1500, Telefax: 90/212-287-2463,