| 摘要 |
PROBLEM TO BE SOLVED: To secure sealing performance of a connection part while renovating a waterway without degrading work efficiency. SOLUTION: This renovated waterway 1 is disposed at an existing waterway 90 in the connected state of a unit member 60 having a plate member 59. A step part 57 is formed at a portion to be the connection part of the unit member 60. The step part 57 of one unit member 60 is projected inside in the thickness direction, and the step part 57 of the other unit member 60 is projected outside in the thickness direction. In the connected state, the projecting parts 56 of the step parts 57 overlap in the thickness direction. COPYRIGHT: (C)2008,JPO&INPIT
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