An indestructible testing method for air pressure distribution in stack of building drainage system

The major function of the building drainage system is to ensure proper operation and to keep a clean and health interior space for human’s life. Therefore, there usually exists an interior health problem from seal water losing trap in general building in Taiwan. The trap with simple structure is also preferred to set as a critical part for most of sanitary facilities because of its easy elimination of stench and vermin. This paper firstly arranged the history and development of drainage technology, and studied the theory and methodology of the performance experiment. This research will investigate the case of existing buildings drainage system in Taiwan from our previous researches. The main purpose of the research is to find the drainage issues in building through the observation and basic study of stack fluid mechanism. And create an indestructible testing method to compare the theory of air pressure distribution in stack of building. Than verify the performance of building drainage system. The results of this research would contribute to the domestic building technology and improve the design of drainage system in building. And that would promote the building quality and better living in Taiwan.