This engineering system is designed to divert liquids( rain or meltwater) from a specific area. Trays for storm sewage are confused with drainage communication, but these are somewhat different things, although in many respects they are similar, since they solve one task - to prevent the formation of excess moisture on the land. Storm sewage has other names, often used in everyday life - "livnevka", "rainwater drainage", but it is not mounted in trenches with subsequent filling of soil, as a drainage, but on the surface.
Purpose of the
- system Prevention of the appearance of puddles, swamping terrain.
- Increase the service life of the roadway, sidewalks, foundations and blind areas of buildings.
- Protection of buried rooms and structures( cellars, cellars, septic tanks and the like) from underflooding.
- Reducing the degree of soil erosion.
There are quite a few different products designed for this. They differ in material, size, and profile. To make the best choice, you need to know something about the trays.
What to look for
Maximum load
The storm sewer, namely the drainage part of the system, is laid on the surface. Hence, it is necessary to take into account all the mechanical loads that will affect the elements of the construction in the place of their installation. Proceeding from this, a certain classification of trays for the respective species is provided.
F900
They are used in a limited way, as they are products of increased "power".As a rule, they are installed in places where heavy equipment is in operation - around aerodromes, industrial enterprises and a number of other facilities. Are capable to sustain up to 80 - 90 t. In a private sector are practically not used.
E600
Accordingly, the maximum load is 60 tons. Also they have only industrial application - bases, warehouses, arsenals, enterprises and so on.
D400
Up to 40 t. As a rule, in zones of intensive traffic, although they are suitable for other production facilities.
C250
This class of products has a maximum load of 25 tons. They are installed in areas with intensive runoff along motorways, in service organizations( for example, washing), in the territories of enterprises and the like.
B125
Up to 12.5 tons. It is advisable to use them along the perimeter of garage complexes, car parks, along middle class roads. In addition, these trays are in demand with the owners of suburban real estate.
A15
The most "low-power", can withstand up to 1,500 kg. The most common for draining liquids from various, small in size areas - garden plots, sidewalks, recreation areas, private homes and the like.
Throughput
This is determined, first of all, by the cross-sectional area of the tray and specially calculated for the specific installation site.
Supplied with
Grids and covers can be supplied with the products. As a rule, from cast iron, with holes( slots) of various diameters( configurations).For models of "light" grilles are made of "stainless steel".
Types of trays
Concrete
Recently they are produced, usually from fibrous or polymer concrete - they are the most durable, therefore they can be used for any water disposal systems. Generally, two classes are produced: F900 and E600.A special feature of the technology is the use of vibrocompression, which makes it possible to achieve the maximum density of the concrete solution and thereby increase the strength of the products. Some samples can additionally be reinforced with metal( reinforcement).
There are 2 types of concrete trays - with unchanged parameters and with a slope of the side faces. In this case, the "difference" in the height of the tray is within 5%.
Many companies are engaged in manufacturing this product, and not all of them can withstand standard sizes. But, as a rule, for the concrete trays they are provided the following:
- length - 1 m;
- height - from 9 to 76 cm;
- width is from 10 to 50 cm.
The main drawback of these products is the massiveness. The weight of the lightest samples starts from 100 kg. This greatly complicates the installation, so even when equipping the drainage system on a relatively modest site, it will not work alone. As a rule, lifting equipment is used to install concrete trays.
In addition, the appearance of these products is somewhat inferior to plastic analogs. But if the aesthetic side of the design of the territory is not a priority, then it is more economical to use such structures. They are characterized by a longer service life and are cheaper than plastic products.
Plastic
These products are in the basic category from "A" to "C".They are more widespread in the private sector, since installation of such trays does not cause complications. The raw material for manufacturing is either HDPE( low-density polyethylene), or polypropylene( frost-resistant).Given the specifics of our climate, the latest models are preferable.
All plastic trays have a low weight, are inert to aggressive chemical compounds and are strong enough. In addition, the products have different colors, which allows to decorate the site of the terrain, making the decoration more attractive. It is worth noting and another "plus" - these trays are much easier to clean from dirt and debris, as the surface of the gutter is smooth.
But there is also a "downside" - a shorter service life compared to concrete products and a higher cost.
The assortment of products is so diverse that it makes no sense in one article to bring together all the price lists of the Manufacturers. To have a general idea of what amounts are involved, several examples:
- plastic: 14.5 x 6( cm) with a length of 1 m - from 285 rubles / piece. The same, with a gutter height of 18.5 cm - from 465 rubles / piece.
- concrete: with the same dimensions( 14 x 6), but 2 times shorter( 0.5 m) cost per 1 pc.- from 165 rubles.
There is only one recommendation for choosing one type of tray: economic feasibility. For private ownership, plastic is more preferable, since the design of the site still can not be ignored. Products made of concrete look somewhat "official", and their installation requires a lot of work.
