UA71055C2 - Element of the surface rain-discharge channel - Google Patents

Abstract

The element of the surface rain-discharge channel has a rain-collection concrete trough. The trough is in cross-section rectangular in shape of the outer surface, and U-like in shape of the inner surface, those together form in the upper part of the rain-collection trough long side walls with horizontal support surfaces, t in width. At one of the end surfaces of the trough bosses are provided, and at the other end surface depressions are arranged. To simplify the technology of making the trough, the side walls of the rain-collection trough are in the upper part at distance 4.5 – 5.5 t. The height of the walls is within 2.5 – 3.5 t. In profile the walls are in the inner surface narrowed to the bottom at angle equal to 9° - 12° and are in radial direction conjugated to each other. The minimal thickness of the bottom of the rain-collection trough is chosen within 0.9 – 1.1 t. The bosses are arranged symmetrically at angles in the lower part of the rain-collection trough and are made as a triangular truncated pyramid with height larger than 8 mm.