| 摘要 |
A prefabricated grating is provided to reduce the time required for construction and work by increasing durability and strength and assembling/disassembling simply, to make mass production possible and to cut down on production cost. The invention relates to a prefabricated grating used for draining off rainwater, water, etc. by being installed on a catch basin of a building, a collecting well, a storm water inlet of a road, stairs of a building, etc., which includes a grating body(100) provided with various patterned rainwater discharge holes(120) formed on the upper side, U-shaped load reinforcement units(140) formed on right and left sides and many fitting holes(160) formed on the outside of the load reinforcement units at regular intervals, and many reinforcement support pieces(200) press-fitted to the fitting holes to disperse and support the load added on the grating body. The load reinforcement unit is composed of a vertical piece(142) formed by folding right and left sides downward, a horizontal backing piece(144) extended horizontally from the end of the vertical piece to support the load added on the grating body, and a vertical reinforcing piece(146) extended vertically from the end of the horizontal backing piece to prevent the distortional deformation by load. |
