| 摘要 |
PURPOSE: A level adjuster for a drainage trench unit is provided to conveniently adjust gradient and smoothness and rapidly install a drainage trench unit. CONSTITUTION: A level adjuster(100) for a drainage trench unit comprises a base member(110), a moveable member(120), and a fixing member(130). The base member is fixed to footing concrete. The base member comprises a first saw-toothed portion(119) consisting of saw blades. The moveable member is coupled with the base member to be moved. The moveable member comprises a second saw-toothed portion and a support unit. The second saw-toothed portion engages with the first saw-toothed portion. The support unit supports the drainage trench unit. The fixing member fixes the moveable member on the base member. |
