抄録
This paper studies the prediction method of mean air pressure distribution of drainage stack systems, which includes special drainage fittings. The results of the study are as follows : 1) Clearing the phase of the air pressure distribution of special drainage fitting systems. 2) Verifying the prediction method that was reported by part 1 in special drainage fitting systems and making the margin of application clear. 3) In addition to reinvestigating parameters applied in previous prediction method, the study proposes a new method to easily acquire parameters and offers a wide application range. 4) Proposing a 100 meters class prediction method of mean air pressure by using 30 meters class experiment data.
