| 摘要 |
PROBLEM TO BE SOLVED: To solve such problems that, in beginning the work execution of sanitation with an existing lavatory pan, the work execution over two floors is required, the construction period is extended and the labor is also increased to result in increased work execution cost, because workers must crush and dismount the existing lavatory pan, collect the fragments of the lavatory pan from a downstairs ceiling, demolish the piping and arrange new piping. SOLUTION: The upper part of the bowl of the lavatory pan is removed, a connection pipe insertion port is provided in the bowl of the lavatory pan, and the connection pipe is inserted from above the insertion port. The connection pipe has a plurality of members, a drain port side connection tube to be connected to a drain port in the sanitation, a drain side connection tube to be connected to a drain port and/or existing drain pipe of the lavatory pan, and a connection tube having outer shells at both ends formed in sectionally flat shape for connecting a drain side bent connection tube to be connected to the other end of the drain side connection tube, a drain port connection tube and a drain side bent connection tube together. The sanitation is secured to the connection pipe.
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