Rain grate steel grating plate depends on the application environment of different treatment methods

In the process of rationally standardizing the use of rain steel grating grille, the road water can be reduced and the traffic congestion in rainy days can be alleviated. What is the design specification of rainwater grate? 1, flat grate rainwater inlet grate surface should be lower than the nearby road surface 3? 5 cm, the surrounding road should be inclined to the rainwater inlet. The bottom of the vertical stormwater inlet shall be slightly lower than the nearby road surface, and the depth of the stormwater inlet well shall be less than or equal to 1m. In frozen areas, anti-freezing measures should be taken for rainwater Wells and their foundations. In areas with large amounts of silt, sediment tanks can be set up as required. 2, the drainage capacity of rainwater vent, flat grate rainwater vent is about 20l/s, combined rainwater vent is 30l/s. The drainage capacity of rainwater vents that are easily blocked by debris during heavy rains should be multiplied by a coefficient of 0.5 ~ 0.7. The drainage capacity of multi - grate storm water vent and vertical storm water vent is determined by calculation. 3. Stormwater outlets should be located at water connection points, upstream of crosswalks, upstream of entrances and exits of units along the street, and at exits of communities or courtyards near surface runoff. Storm water outlets should be increased as appropriate on low-lying roads and in areas prone to waterlogging. 4. The distance between rain water outlets should be 25? 50m, in alignment with the inspection well. The Angle between the connecting pipe and the main pipe should be close to 90 °. When the connecting pipe is tilted, the connecting pipe should be positioned forward with the main flow. 5. The plane intersection shall follow the rainwater outlet designed vertically, and measures shall be taken to prevent the rainwater of this section from entering the intersection. 6. The connection pipe of the rainwater inlet should have a relatively small diameter of 200mm. The slope of the connection pipe should be greater than or equal to 10%, the length of the connection pipe should be less than or equal to 25m, and the thickness of the soil covering should be greater than or equal to 0.7m. When necessary, rainwater inlets can be connected in series. The rainwater inlets in series should not be more than 3, and the diameter of the outlet connecting pipe should be increased. However, the tube seat of the rainwater inlet connecting pipe is the same as the tube seat of the rainwater pipe seat. The service life of the step plate can not be simply explained how, according to the application environment, different processing methods, welding quality can be used in different years. There are many factors that affect the application lifecycle. One is mechanical damage and the other is external corrosion. Mechanical damage refers to the deformation of the step plate caused by the impact of external heavy objects, or the pressure deformation caused by the steel lattice plate under too much pressure for a long time. It's caused by mechanical failure. External corrosion refers to humidity, temperature, oxygen and other acids and bases.