函渠

Tottori-ken ni keikaku sareru hakogata kankyo ni tsuite, kinō fukkyū o kōryo shita nai kū danmen no settei o okonatta ue de kōji hatchū ni hitsuyōna shiryō sakusei o okonaimashita.In the planning of this box-shaped channel in Tottori prefecture, from the perspective of restoring functionality, after configuring the open cross-section we prepared an estimate including all necessary materials and construction work.