Abstract
Recent increase of the body size of Japanese young men, especially the height, is very remarkable. And we have to think better of the size of building element for dwelling houses. The purpose of this study is to clarify the necessary clearance to walk through the openings and the comfort of the human from a standpoint of ergonomics by carrying out a full scale experiment. The combination of the measured clearance, which is able to behave comfortably, and statistical height of human body, which is expressed with suitable percentile, is necessary and important for deciding the effective height of entrance and door case.
