Before incorporating the earthquake-resistance design in design code(1988), most of existing residential buildings were built without having lateral resistance capacity in addition to their structural peculiarity such as exterior stair ways, exterior elevator room. For these reasons, the retrofitting research demands for existing buildings arise recently and many retrofitting methods are proposed. These tasks are irnportant to reduce the enormous economic loss and environmental issues. The objective of this study is to predict the perforrnance increase due to various strengthen schemes and suggest adequate strengthen methods for wall type apartment buildings not designed to resist earthquake.

• 박태원(단국대학교 내진리모델링 연구소 연구원, 박사수료) | Park, Tae-Won
• 정철화(단국대학교 대학원 건축공학과 공학석사) | Jeong, Chul-Hwa
• 노영숙(단국대학교 건축대학 건축공학과 초빙교수, 공학박사) | Roh, Young-Sook Corresponding author
• 정란(단국대학교 건축대학 건축공학과 교수, 공학박사) | Chung, Lan