(57) The railway bridge drain composed of a flat full plate (1), which has a round opening
(2) in its centre, and of a drainpipe (9), which is situated in the round opening
(2), of the plate (1) to which it is vertically connected and inside the drainpipe
(9) is a nut (3) in the centre.
A flat full collar (4) in the centre of the top part of the plate (1) contains a square
opening (5) and on the plate (1) is a drainage cover (6), set-up from side walls and
top wall, of which the drainage openings (11) which are inside the drain cover (6),
make from 20 to 30 % of the total surface of the drainage cover (6).
The plate (1), collar (4) and drainage cover (6) are connected together by a connecting
screw (10), which is connected to the nut (3) in the drainpipe (9).
A drain frame (7), which is made-up of sidewalls and top wall, and has drainage openings
(11), can be placed around the drain cover (6).
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