1. Professor, Dept. of Civil Engineering, Univ. of Akron, Akron, OH 44325-3905.
2. Geotechnical Engineer, CH2M HILL, 15010 Conference Center Dr., Suite 200, Chantilly, VA 20151; formerly, Graduate Research Assistant, Dept. of Civil Engineering, Univ. of Akron, Akron, OH 44325-3905.
3. Director of Geotechnical Engineering, E. L. Robinson of Ohio Co., 6000 Memorial Dr., Dublin, OH 43017. E-mail: jamal@elrobinson.com