| 摘要 |
FIELD: upper railroad structures, particularly drain structures to remove surface and ground water and to drain other structures, namely motor roads. ^ SUBSTANCE: drain gutter is made of fiberglass plastic and includes concave bottom, two flat walls inclined outwards and provided with drain orifices, transversal stiffening ribs located on the gutter outside and extending along wall and bottom generatrix for the full gutter length except gutter ends. The gutter also has longitudinal stiffening ribs and horizontal anchoring plates located outside the gutter between transversal stiffening ribs. Bottom has bulge having thickness of up to 3 mm. Gutter width is not less than 400 mm. Gutter bottom and walls are provided with widened area located at gutter end. ^ EFFECT: provision of stable gutter operation in all working temperature range, increased strength and rigidity, possibility of simple equipment usage for gutter production and increased manufacturability and universality of gutter joints. ^ 3 cl, 2 dwg |
