| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage collecting pipe which enables the free arrangement of a horizontal branch pipe even if a floor plan is changed in the future. SOLUTION: In this drainage collecting pipe equipped with a barrel part 7 wherein vertical-pipe connecting parts 5 and 6 are provided in upper and lower parts, at least three horizontal-branch-pipe connecting parts 9, which are arranged with a phase difference of 90°in the same horizontal plane in the barrel part 7, enable the connection of the horizontal branch pipe 11 with an inside diameter of 75 mm or more, respectively. The three connecting parts 9 each serve as connecting parts for a horizontal branch pipe 11a for a toilet bowl, a horizontal branch pipe 11b for a kitchen and a horizontal branch pipe 11c for other waste water from various sourceses. COPYRIGHT: (C)2004,JPO
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