Abstract
In Japan, the planning and design of drainage and vent systems for 2-3-storey low-rise houses is not clearly defined, even by SHASE-S206 “Standard for Plumbing and Sanitary Systems” by the Society of Heating, Air-conditioning and Sanitary Engineers of Japan. Hence, house development companies and building and construction companies use their own devices to design and execute plumbing work. Considering this current situation, this study aims to develop a model of a fitting having a swivel air admittance function, which is specifically for drainage systems for detached houses; verify the effectiveness of the fitting by means of carrying out evaluations on its influence on drainage performance; and provide experimental data which can contribute to the planning and design of drainage systems for detached houses.
