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    • 1. 发明专利
    • REPAIRING METHOD FOR WATER FEED VERTICAL PIPE
    • JP2001020331A
    • 2001-01-23
    • JP19422899
    • 1999-07-08
    • KUBOTA KK
    • YAMADA OSAMIISHIKAWA HIROSHIYONEDA RYUICHI
    • E03C1/00
    • PROBLEM TO BE SOLVED: To quicken execution of construction in repairing a water feed vertical pipe of a mutli-storied building, by removing an existing deteriorated vertical pipe and inserting a flexible synthetic resin pipe in the space, and connecting a lateral branch pipe to the flexible pipe. SOLUTION: Repairing of a water feed vertical pipe is to be performed within the predetermined amount of suspension time of water supply, taking the living circumstances of residents into consideration, and in the case where the time required for construction work is long, the construction work is separately conducted several times. At the time of construction, with a water feed valve 18 from an elevated tank and a stop cock of each floor closed, a drain valve 32 is opened, thereby discharging water in a water feed vertical pipe 12 (old pipe). Secondly, the old vertical pipe 12 extended to a designated floor is removed, and a new vertical pipe 40a formed of flexible synthetic resin is inserted in that space, and temporarily connected 46, 50 to the remaining old pipe through joints 44, 48. In this case, the new pipe 40a is wound like a coil to be easily transported and be easily inserted in the piping space. After the completion of construction work, the temporary connection 46, 50 are put to final connection. Thus, the construction work can be quickened.