1. Project Engineer, Vertex Construction Services, 400 Libbey Parkway, Weymouth, MA 02189.
2. Fred N. Peebles Professor of Civil Engineering, Univ. of Tennessee, Knoxville, TN 37996-2010 (corresponding author).
3. 1204 Lambeth Place, Kingsport, TN 37660, formerly; Graduate Research Assistant, Dept. of Civil Engineering, Univ. of Tennessee, Knoxville, TN 37996-2010.
4. Structural Engineer, Tennessee Valley Authority, 7064 Ely Ford Place, Hixon, TN 37343.
5. Structural Engineer, CH2MHill, Oak Ridge, TN.