| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage structure for a toilet stool capable of simplifying the execution of a reform such as the enlargement or remodeling of a building while sufficiently securing the washing property of the toilet stool. SOLUTION: The toilet stool (1) and a washhand basin (2) are provided, a drain pipe (4) from the washhand basin (2) is connected to the drain section (3) of the toilet stool (1) to form a discharge section (5) of the drainage of the toilet stool (1) and the washhand basin (2), and the discharge section (5) is formed with a double tube (6).
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