FIELD: construction.
SUBSTANCE: invention relates to elements designed for surface collection and drainage of storm and melt water from surface road covers using rain-collecting trays (10) equipped with slot metal grills (1). A grill (1) for drainage channels is arranged in the form of a rectangle with water inlet holes placed with a regular pitch along the longitudinal axis of the grill (1). On the working surface of the grill (1) there are ledges arranged in the form of a volume relief pattern, which looks like a trace of a car tyre tread. Side surfaces of protruding elements form cavities between each other, which are open at the side of water-collecting holes of grills (1) and sides of grills.
EFFECT: higher adhesion of pneumatic car tyres with surface of a slot grill in drainage channels, reduced sliding, lower changes of car skidding when driving onto a grill.
23 cl, 11 dwg
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