1. Assistant Professor, Yildiz Technical Univ., Maslak Campus, 309 34396 Maslak, Istanbul, Turkey.
2. Bridge Engineer, HNTB Corporation, 715 Kirk Dr., Kansas City, MO 64105.
3. Professor, Univ. of Kansas, 1530 W. 15th St., Lawrence, KS 66045 (corresponding author).
4. Associate Professor, Univ. of Kansas, 1530 W. 15th St., Lawrence, KS 66045.
5. A.P. Learned Professor, Univ. of Kansas, 1530 W. 15th St., Lawrence, KS 66045.