Abstract
The questionnaire survey was conducted to clarify effective explanation of grades of seismic capacity using probability of damage. The panels living in Yokohama City, Kawasaki City or 23 Wards of Tokyo who were in their thirties to forties, and who wanted home ownership were selected and 759 valid answers were obtained. Questions regarding seismic risk perception and preference of seismic capacity of a house were asked. As a result, it was observed that the panels overrated seismic risk and demanded various seismic capacities. Additionally, it was revealed that explanation using the probability of damage in relation to seismic intensity was effective, and that a house with high seismic capacity was preferred even after information on risk of seismic damage, which might remove the bias of the overrated seismic risk, and on additional cost to improve seismic capacity were provided.
