In this paper, a method to estimate overturning ratios of furniture during earthquakes is proposed. A curve to describe overturning ratios of rigid bodies proposed by the author et al. is used in the method. The method takes account of effects of size of furniture and friction coefficients between furniture and floors. The method is verified by comparing with earthquake damage data at the 1978 Miyagiken-oki earthquake, the 1993 Kushiro-oki earthquake and the 1995 Hyogoken-nambu earthquake. Using this method, we can estimate indoor damage due to earthquakes for various size of furniture on various floor conditions.
