An Experimental Study on Evaluation Of Drainage Performance In Low-Rise Houses -Investigation of top air resistance of vent pipes and effect of drainage load on drainage performance-

摘要

The purpose of this study is to evaluate drainage performance and obtain fundamental planning data for drainage systems of low-rise detached houses. In this paper, we grasped characteristics of air resistance of vent caps for standard stack vent pipes, and clarified effect of drainage load on drainage performance at first. Next, the recovery efficiency of drainage performance was quantitatively obtained by employing the support vent device (using small air admittance valve [AAV]) installed on the fixture drain pipe.