Abstract
This is an investigation report on the failure of ceilings at entrance hall with well space of an airport building during the 2011 off the Pacific coast of Tohoku earthquake. Luckily, nobody was injured by the accident, however the height of the ceilings was so high and it is worth to estimate impact of the failure and possible danger to human body for better understanding of the risk of such failure. The impact estimation was carried out by reference to the news video taken during the accident and by comparing to the experimental results of dummy head test. [This abstract is not included in the PDF]
