Abstract
Due to the increasing possibility of big offshore earthquake in Japan, availability of middle to high rise buildings for temporary refuge from Tsunami is seriously considered by the government. This report presents a recent study on the modeling of the refuge process and within tsunami-hinan buildings and the discussions on the utility of various building occupancies and refuge strategies through parametric analysis using the proposed model. The analysis revealed significant dependence of the effectiveness of refuge from Tsunami on the time to start refuge and the building occupancies. Design guides to improve refuge performance of various occupancies are also proposed.