If the steel sheet pile at the time of construction of the sewage special manhole is left on the pipeline, it may interfere (2 places). Pipe jacking work with casing pipe of water distributing pipe.
It was difficult to remove obstacles from the ground because the work was to cross the main road of Hatchobori in Tokyo, which has a lot of traffic. In addition, since the soil was a sand layer and the groundwater pressure was high, the construction was carried out after careful consideration.
As a result of the construction, there were no steel sheet piles in both places and the pipe jacking work was completed.