| 摘要 |
PURPOSE: A grating frame for construction of a drainage way and a passage is provided to remarkably reduce construction time and to extend the service life of the frame because an additional welding process is not required. CONSTITUTION: A grating frame for construction of a drainage way and a passage comprises metal gratings(100) and frames(200). Each metal grating is composed of a edge frame(110), multiple bearing bars(120), and cross bars(130). The metal gratings filter foreign materials so that the foreign materials cannot flow toward a drainage way. The frames support the metal gratings and are composed of wall parts(210), support parts(220), and bent spaces(230). |
