This study aims to evaluation of carrying performance when water saving toilets are connected to drainage pipes in various configurations, and makes use of it for plumbing design. Internationally, ISO 31600:2022 was established as a standard for labeling and performance testing of water-using equipment, including toilets. However, this standard is limited to equipment and do not take into account the waste carrying performance. In this report, carrying performance when the amount of flushing water, the pipe diameter, and the gradient are changed in straight pipe is experimentally identified.
