1. Member ASCE
2. Prof., Dept. of Constr. Engrg., Nat. Taiwan Univ. of Sci. and Technol., P.O. Box 90-130, Taipei, Taiwan; also Div. Head, Nat. Ctr. for Res. on Earthquake Engrg., Taiwan. E-mail: JSH@mail.ntust.edu.tw
3. Grad. Res. Asst., Dept. of Constr. Engrg., Nat. Taiwan Univ. of Sci. and Technol., P.O. Box 90-130, Taipei, Taiwan.