A-42 Study of the performance influences on drainage stack system by the water saving closet

Abstract

We put the water saving closet uses 6-liters of water per flush on the market in April, 2006. The drainage flow rate of the water saving closet tends to increase compared with the old model to improve the flushing performance and transportation. Then we examined the performance influences on drainage capacities with increases in the drainage flow rate of drainage stack system at the higher building. According to this research, the influence that qd-value (average drainage flow rate) exerts on the drainage capacities is not intensive, and the drainage load of the water saving type is almost equal to the old model.