1. Member, ASCE
2. Assoc. Prof., Dr., Dept. of Arch. and Civ. Engrg., Toyohashi Univ. of Technol., Toyohashi 441-8580, Japan.
3. Chf. Engr., CAE Sys. Devel. Dept., Ishii Iron Works Co. Ltd., Tokyo 144-0033, Japan.
4. General Mgr., CAE Sys. Devel. Dept., Ishii Iron Works Co. Ltd., Tokyo 144-0033, Japan.
5. Mgr., Dr., Struct. Des. Div., Fujita Corp., Tokyo 151-8570, Japan.