Study on Japanese EF-Scale and its evaluation methods

- Trial formulation of damage indicators for estimating gust wind speed of tornado etc. -

Abstract

Damage indicators for the estimation of gust wind speed were examined in order to evaluate the intensity
of  tornado or downburst and so on. This aims to contribute the establishment of Japanese Enhanced Fujita Scale for the good estimation of the strong wind damage by tornado or downburst. Degrees of damage were proposed for some construction’s elements and an example for a damage indicator, “standard Japanese roof with ceramic tiles”, was presented.