1. Professor, Dept. of Civil and Environmental Engineering, The Univ. of Tennessee, Knoxville, TN 37996-2010 (corresponding author).
2. Consulting Engineer, Engineering Design and Testing Corporation, Orlando, FL 32714; formerly, Graduate Student, Dept. of Civil and Environmental Engineering, The Univ. of Tennessee, Knoxville, TN 37996-2010
3. Professor, Dept. of Civil and Environmental Engineering, The Univ. of Tennessee, Knoxville, TN 37996-2010;
4. Faculty Associate, Dept. of Civil and Environmental Engineering, The Univ. of Tennessee, Knoxville, TN 37996-2010.