| 摘要 |
<p>The footbridge drain, which is placed in the body of the footbridge or any similar bridge and which is made-up of a frame (1) with openings (6) inside on parallel sides, which contain a casing (10) with a thread for the embedded bolt (7).</p><p>A frame (1) that is made-up of a plate, pot, frame and outlet, which are permanently joined, and on the parallel outer sides of the frame (1) form gaps (4) for the drainage of the waterproofing (3), in the frame (1) on the seating surfaces (5) is a narrow-ribbed grate (2), with a rib spacing (9) of 14 to 16 mm, and has a matrix element (8) on parallel sides with an opening for the embedded bolt (7).</p><p>The top pedestrian outer surface of the narrow-ribbed grate (2) is covered with waterproofing (3), which forms the surface of the footbridge.
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