Reinforced concrete trays: characteristics, types,

Reinforced concrete chute is a prefabricated building element made of reinforced concrete and intended for the construction of various technical structures: communication and water channels, gutters of storm sewer systems, drainage systems, heating mains and various elements of underground and surface communications. We will tell you what types and sizes of reinforced concrete trays exist, what are their characteristics and scope.

Main characteristics of trays

Sizes and shape

To understand what are the trays of reinforced concrete, you should consider them in detail. If you do not take into account the nuances, then we can say that these products have a U-shaped cross-section and resemble troughs.

In this case, the geometric section can be either rectangular or trapezoidal, triangular, elliptical, or parabolic. For various purposes, one form or another is used, depending on the tasks, for example, reinforced concrete culverts of rectangular cross section are used in drainage systems, and triangular - for storm sewers along highways.

Also to trays produce special overlap. These are reinforced concrete or metal plates, which serve to protect communications from ingress of unwanted substances and objects, as well as to prevent clogging of drainage canals and drainage channels.

Tray sizes may vary. Depending on the purpose and brand of the product, their length, width, wall thickness, height and, accordingly, volume can vary. The length and width can vary from 25 - 50 cm to three to six meters, height - from 6 to 160 cm, weight - from 25 kg to 3 and more tons.

  Note! According to GOST for the production of concrete products, products can have both standard sizes and rarer fractional values. The method of attaching the tray to lifting cables or pegs may also vary.

Composition and properties

As already mentioned, the trays are made of reinforced concrete. According to GOST 23009-78, cement concrete based on Portland cement M400 and above should be used for the production of concrete goods. Concrete must be heavy, dense, made on dense aggregates and have a grade not lower than M300.

In the production process using the technology of injection molding or vibropressing. These methods allow you to create a material of high strength, sufficiently accurate geometry, good water resistance and frost resistance, since the compaction of concrete significantly improves its quality.

Steel of class АI - АIII, and also BP-I is used as reinforcement, and the diameter of cross-section should be taken not less than 6 mm with longitudinal and not less than 5 mm with transverse reinforcement. The production of trays is regulated by regulatory documents, the main of which is GOST 21509-85, the manual does not imply making your own hands.

  Note! Applied materials and technologies allow to call these products high-strength, waterproof and frost-resistant elements of engineering networks, hydraulic engineering and building structures.

Varieties and Purpose

To begin with, it should be said that CBL is divided into three main groups:

1. Drainage concrete trays. Used for the construction of drainage, sewage and collector systems, as well as for the installation of various elements of hydraulic structures and water diversion systems from transport routes;
2. Cable лотки. Designed for installation of cable channels, laying of utilities, protection of tires and various electrical, communication, information networks and communication channels;
3. Concrete trays for heating mains. Used to protect pipes with steam and hot water from contact with melt and groundwater, sedimentary streams, soil and aggressive chemicals. Differ in the increased durability and resistance to the destroying influences of the environment.

In addition, there is a classification by purpose:

• Road. Serve for collecting and draining water from highways, pedestrian sidewalks, urban carriageways and parking lots;
• Railway. There are interpeductal and interdushpalnye (MPL and MSL), designed for drainage of water from railway tracks;
• Drainage. They are used in the construction of storm sewers, as well as for diverting water from the foundations and socles of buildings, transferring and dumping it into designated zones;
• Drainage. They are used for diverting water from household and farm plots, organizing the collection and removal of storm and melt water, water discharge from embankments, slopes, bridges, etc. Here there is a separate type - telescopic trays, which are used to discharge fluid from embankments and slopes, including on highways and highways;
• Rain. They are small in size and are used to construct gutters to collect water in areas, around houses, along roads and streets, sidewalks, etc. Are an integral part of storm sewers and systems of improvement of territories;
• Cable. As already mentioned, used for the installation of engineering networks;
• Warmth. They protect pipes from corrosion, soil pressure, soil displacement, as well as from contact with the external environment and heat loss.

The price of products depends on their size, purpose, type and shape. It can vary from several hundred to several thousand rubles apiece.

  Note! For convenience, they produce additional elements that are intended for the selection of the channel length, otherwise it will be necessary to cut the reinforced concrete with diamond circles. Also, parts may have different technological holes in the walls or bottom, which allows us not to use diamond drilling of holes in concrete during installation work.

Conclusion

Water throughput concrete trays and cable products are indispensable elements of drainage systems and drainage, storm and street sewage systems, hot water supply systems and utilities. The use of these products reduces the construction costs of the listed facilities and speeds up their installation.

The video in this article will help you better understand the features of JBL.