Concrete drainage trays are the main element of the central storm sewer. Most often they are used on autobahns, runways, in parks. Depending on the type of reinforced concrete drainage channel, its dimensions and shape change. But in general, the technical characteristics of the products are identical.
Scope of application of reinforced concrete drainage trays
Basically, reinforced concrete trays are used for the construction of storm sewer channels on hard surfaces. Special drainage pipes are used to drain groundwater. Reinforced concrete gutters are used for the following purposes:
- storm water disposal at urban facilities: parks, highways, paths;
- wastewater disposal inside industrial workshops;
- laying of a cable line;
- installation of hydraulic structures;
- laying of the pipeline.
As a rule, in private construction, concrete trays are rarely used, since the soil tends to swell during the snow melting season. This can displace the product and even break.
Types of reinforced concrete trays
Types by purpose:
- S250. Designed for light loads. Used on small roadways, walking paths in the park.
- D400. They have a higher load than their predecessors. These are designed to drain storm water from roads with heavy traffic, refueling.
- E600. Used for large volumes of rainwater. Most often they are mounted in production and on autobahns.
- F900. The most powerful. Designed for storm water storm on the runway.
As for the dimensions of reinforced concrete trays for storm sewers, their length is often 1 m. The inner diameter varies within 100-500 mm, depending on the class of the product. The shape of concrete goods is rectangular or circular.
Specifications
All reinforced concrete trays are produced in accordance with GOST, since they have high expectations regarding strength and durability. For the manufacture of gutters, special reinforced concrete with a density of 2400 kg / m3 and cement grade M 250 are used. As a result, the finished product has the following characteristics:
- high resistance to any mechanical stress, both static and dynamic;
- inertness to temperature extremes;
- weight, which varies between 25-3000 kg;
- the height of the walls of the gutter is 6-160 cm;
- waterproofness;
- resistance to aggressive environments.
Due to the high weight of a unit of the product, it is necessary to use a special technique for stacking.
Installation features
- Dig a trench of the right size. Channel parameters should exceed the dimensions of the tray by 30 cm on each side and height. In the future, this space will be filled with a concrete pad.
- The soil at the bottom of the trench is carefully rammed and a layer of sand 10-15 cm thick is poured on it. It is also well compacted.
- A layer of concrete solution 15 cm thick is poured onto the bedding. It is allowed to dry completely.
- Reinforced concrete gutters are laid on the dried base using special equipment. They are joined together, all joints are treated with bitumen sealant.
- From the outside on the sides, the trays are poured with concrete mortar.
- The drainage channel is docked with the central storm drain, the top of the gutters is covered with protective cast-iron or steel gratings.
During the laying of reinforced concrete trays, a slight slope should be observed towards the main receiver.Then the water will be transported by gravity.
Advantages and disadvantages
For reinforced concrete gutters, the following positive aspects are inherent:
- High resistance of the material to aggressive environments.
- Anti-corrosion properties.
- Long service life - 50 years or more.
- Resistance of concrete to temperature extremes, including the effects of negative indicators. With repeated freezing-thawing, the material does not lose its performance properties.
- Concrete inertness to mechanical stress. The exception is high-strength point strikes.
- Environmental friendliness of products. The concrete does not emit vapors harmful to the environment.
- Ideal smoothness of the inner walls due to the addition of polymers to the solution during the manufacture of trays.
The relative disadvantages of reinforced concrete gutters include their weight. However, it can also be considered a plus. Because even heaving soil will not be able to move them.
The cost of reinforced concrete trays
Prices for reinforced concrete drainage trays depend on the size and brand. Approximate price table:
| Tray brand | Length of the product | Item Width | Item Height | Tray weight | Price, rub.) |
| L-10-5 | 1000 mm | 500 mm | 230 mm | 200 Kg | RUB 950 |
| L-1-7 | 1100 mm | 390 mm | 370 mm | 150 Kg | RUB 1100 |
| LV-68-30 | 680 mm | 300 mm | 340 mm | 90 Kg | RUB 1780 |
| L-300 | 2950 mm | 540 mm | 430 mm | 660 mm | RUB 3200 |
The cost of reinforced concrete trays may vary slightly depending on the region and the manufacturing company.
