Development of Japanese Enhanced Fujita Scale

DOD of non-residential structure [sign board and grave stone]

Abstract

As the classification method of the intensity of tornado, appropriate Damage Indicator and Degree of Damage should be proposed.  In this study, to fix these parameters, the tornado-damage estimation technique will be established.  Then it will be helpful for laying down the Japanese Enhanced Fujita Scale.  In this report, the critical wind speed for some kind of damage type of ‘the sign board’ and ‘grave stone’ which is selected as the DI, was estimated.