抄録
The leakage inspection of the Drainage System is an important examination that should be done when thinking about the water leak accident that occurs after constructing the building. Recently, the method of enforceable without using water of the leakage examination of the Drainage System in air is proposed. This study is the one that the investigation research on the effectiveness of the leakage inspection method of the Drainage System by the air pressure test was done through two or more field experiments.