Bathroom unit installation method

Abstract

This invention provides a construction method for easily connecting the underfloor drain pipe of a bathroom unit to the main drain pipe of the pipe space. A pipe space 3 is provided at a corner 2e of a building interior section 2 for the bathroom unit 10. An underfloor drain pipe 30 is pre-installed on the underside 12b of the floor 12 of the bathroom unit 10. The inlet 31 of the underfloor drain pipe 30 is connected to the outlet 17 of the floor 12, and the outlet 32 ​​of the underfloor drain pipe 30 protrudes into the pipe space 3 at the corner 2e of the floor 12 through a notch 12. Before the pipe space wall 6 separating the pipe space 3 from the bathroom unit 10 is constructed, the floor 12 with the installed underfloor drain pipe 30 is laid on the main floor surface 2a of the building interior section 2, excluding the pipe space 3. After the floor 12 is laid and before the pipe space wall 6 is constructed, the outlet 32 ​​is connected to the main drain pipe 4 piped into the pipe space 3.

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