| 摘要 |
PURPOSE: A prefabricated drainage is provided to prevent scour and ensure improved drain function by conducting scour water into an auxiliary waterway. CONSTITUTION: A prefabricated drainage comprises a drainage body(10), a wing portion(20) and a screw installation. The drainage body has a central drain passage(11) and side walls(12). The wing portion includes a receiving space(21) formed outside the side walls at a lower height and drain holes(22) formed to pass through the side walls from the receiving space. The screen installation is accommodated in the receiving space to pass the water only. |
