| 摘要 |
PURPOSE: A water-tightness water path is provided to prevent a measuring part from puckering to the inside by the earth pressure. CONSTITUTION: A water-tightness water path comprises a pipe member. The pipe member comprises a floor side(111) and a sidewall part(112). The sidewall part stands uprightly on both sides of a floor. The pipe member has an opened top. The pipe member has the various cross-sectional shapes. A socket member(120) is formed on an end of the pipe member. |
