DRAIN PIPE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a drain pipe structure capable of preventing a header from being filled with waste water discharged from horizontal branch drain pipes. SOLUTION: The drain pipe structure 10 is provided for guiding waste water into a main down-pipe 24 from a plurality of sources of waste water 18 to 22 installed in a housing. The drain pipe structure includes a plurality of horizontal branch drain pipes 12 connected to the plurality of sources of waste water, and the header 14 connected to the main down pipe 24. The header has a top surface 28 and a bottom surface which have respective opposite triangular planar shapes, and three side faces 30 and 32 leading to the top and bottom surfaces and to one another. The plurality of horizontal branch drain pipes 12 are connected to one side face 30 of the header in mutually spaced apart relation in the direction of elongation.