2013 年 19 巻 41 号 p. 25-30
A tracing survey to clarify the improvement feature of masonry garden walls ranked in the poor quality at 1980 (two years later from the 1978 Miyagiken-oki earthquake) was performed. The result of the inspection indicated a feature that over 80% of houses which had poor walls have been improved toward the safety. Some findings for studying how to evaluate the improving situation were also obtained. Investigation shows that a numerical method using the logit conversion could be a useful tool for the evaluation.