Surface drainage systems, their characteristics
This system includes the following types:
- Linear drainage system. It includes a tray, which is installed under a certain slope. Our drains, should go down to the lowest point where the collector is located.
- The mended water drainage system includes a collector, manholes, a sewerage system, rainwater receivers, and sand trap structures.
Sewage gratings
The drainage system must have a certain load class and be closed by a pre-selected grate. When its development takes place, the place in which it is necessary to lay it is always taken into account. This can be suburban areas, in the pedestrian crossing zone, in places with high strength and ecology.
The tray should have a shower grate installed that has a DN100 marking. This brand is one of the largest drainage structures, and the category of its load ranges from A15 to C250.From pedestrian crossings, sidewalks, to parking lots, residential complexes.
Description of the sewage gutters
The sewer gutters are made of materials such as - polymer concrete, reinforced concrete, and plastic, which is manufactured with good resistance to low temperature conditions. The most popular today is the plastic tray, which has such advantages:
- Plastic trays are well and easily delivered to objects.
- Installation work takes place quickly and with less time.
- A duct made of plastic can easily be made to its own length.
- These gutters are much more durable.
In order to spend less time designing the storm water drain, spend less money and get the work done in the final result, then it's best to perform the installation with plastic gutters.
Types, material and structure of the storm system
The grate for storm sewage can be:
- Made of cast iron. Cast iron has good corrosion resistance, density, as well as durability. Such gratings should be used on objects with high load. Most often these are zones with industry, transport buildings, airports.
- Of gray cast iron. They are used for non-standard channels. Used most often in garages, parking lots for cars, pedestrian crossings.
- The last option is stainless steel. For such designs, orthogonal troughs are used, with small or standard depths. Such trays are often equipped on sites that have high drainage needs.
The order of installation of sewer systems
Installation work on the laying of sewer grates and gutters is as follows:
- At the initial stage, the base is made under the chute. As a base, a concrete and sand-gravel layer is used.
- At the end of the line there should be sand trap structures or a special channel with a vertical outlet.
- With the help of a rope a certain road is chosen on which gutters will be designed.
- It is necessary to clean the anchoring place, and only then, to fasten the drainage grate.
- One of the main factors is the connection of the gutters with each other.
- The end of the tray must be in the direction in which the water will run.
- The next item is the installation work of all the remaining materials.
- Walls are flooded.
- It is also necessary to remember the temperature seam that passes along the concrete base and the gutter, while the hermetic or bituminous materials are used.
- On the base, which is covered with asphalt, all the grilles are covered with strong coatings.
To drain the drainage correctly and after its final stage, no breakdown occurred, its slope to the trays should be:
- I = 0.02, which means 2 centimeters per 100 centimeters of our pipe. In this situation, technical problems will not arise during operation.
