1. Member, ASCE
2. Chf. Res., Inchon Airport Expressway Constr. Ofc., Korea Hwy. Corp., 531-7, Kyeongseo-dong, Seo-ku, Inchon, Korea, 404-170. E-mail:h _gil@hanmail.net
3. Asst. Mgr., Samsung Corp., 531-7, Kyeongseo-dong, Seo-ku, Inchon, Korea, 404-170.