排水横主管での合流排水を考慮した排水立て管システムの排水能力試験法に関する研究: その1　合流排水試験法と管路網モデルの提案・検討

摘要

排水横主管での合流排水の影響を考慮した排水立て管システムの排水能力試験法を、確立するための基礎研究を行った。その結果、適用範囲は本実験に限定されるが、JIS-DT継手使用の伸頂通気方式において、以下の知見が得られた。%The study proposed and clarified three points based on the results of the combined drainage experiment using a plural number of single stack systems with JIS - DT fittings. These points are: (1) the proposal of a testing apparatus and evaluation method to measure the influence of combined drainage above the house drain, (2) the proposal of a model for predicting the drainage performance of single stack systems in consideration of the influence of combined drainage and the examination of the models' suitability based on the pipe pressure variation as an index, and (3) as feedback of the piping design the examination of the determination method for the allowable flow rate of the house drain in consideration of combined drainage as well as the discussion about the piping method for arranging the stack system with the horizontal fixture drain branch which is located at the bottom of the system.