1. Member, ASCE
2. Prof., Dept. of Civ. Engrg., Seaton Hall, Kansas State Univ., Manhattan, KS 66506. E-mail: reddi@ksu.edu
3. Doctoral Res. Asst., Dept. of Civ. Engrg., Seaton Hall, Kansas State Univ., Manhattan, KS.
4. Prof., Dept. of Civ. Engrg., Korea Univ., Seoul 136-701, South Korea.