What are Storm Drains?

Rainwater pipes are structures that collect and transport rainwater. It can also collect industrial cooling water and other slightly polluted production wastewater. Setting up rainwater pipes can drain rainwater in time. Prevent rainwater on the ground in urban residential areas and industrial enterprises from affecting normal life and production.

Rainwater pipes are structures that collect and transport rainwater. Can also collect industrial cooling water and other minor pollution

The drainage system used in cities and towns to remove rainwater is divided into:

1. Rainwater branch pipes in neighborhoods and factories;

2. Street rainwater branch pipe;

3. Urban rainwater mains.

There are also some auxiliary structures on the pipe system, such as rainwater outlets, inspection wells, rainwater conditioning tanks, rainwater pumping stations, and rainwater outlets. Rainwater outlets are located at the banks of rivers, lakes or other receiving waters, and are the end point of the rainwater system.

According to the principle that rainwater is discharged into the receiving water body nearby, it should be determined based on comprehensive consideration of town planning, topography, geological conditions, and other factors. Location of rainwater mains.

Generally, it should be arranged at low-lying terrain and where the rainwater branch pipes on the street are easily accessible. Flat areas should be located in the middle of the drainage basin.

For low-lying points that are prone to cause stagnant water and overpasses or other closed low-lying basins, the layout of rainwater pipes and gullies must be carefully studied so that rainwater can be discharged smoothly, and the storm runoff when the rainfall exceeds the design return period Exhaust measures.

For the drainage of low-lying points of three-dimensional intersection roads and railways, taking into consideration the premise of ensuring smooth drainage, high water and high drainage (gravity discharge) and low water (not heavy (low depressions that cannot be gravity discharged)) pumping methods are considered. However, it is necessary to reduce the amount of pumped water as much as possible. The location and number of rainwater outlets should be appropriate to avoid repeating the layout of pipes.

Determined according to factors such as rainfall, hydraulic conditions, construction requirements, and material supply. The commonly used rainwater pipe sections include round, horseshoe, vaulted rectangular, rectangular and trapezoidal open channels. Rainwater pipes and canals are often made of concrete, reinforced concrete, bricks, stones and boulder ^[1] .