Guardrails. Purpose and types of road barriers

An Inalienable part of the highways are road barriers. Their main function — symbol of the trajectory of the transport and mitigation in case of an accident and obstruction of a vehicle rollover into a ditch. Increasingly used such fencing not only on intercity highways, but on city roads as safety fences.

Main types of road barriers

Distinguish 2 main groups of barriers:

1. Construction of a barrier type (parapets, curbs, etc.), which are used in order to prevent the congresses of vehicles from road surfaces, flyovers, viaducts, and also to avoid clashes and raids on facilities in the row. Barrier road fence can be made of metal, concrete and plastic.
2. Design fixed type — the metal mesh is designed to prevent the output of animals and to organize the movement of pedestrians.

Metal fence

Due to its advantages, this type of fencing is the most popular. It is a structure deformable upon impact. Metal profile is fixed on a separate steel or wood post. When the automobile portion of the energy takes over the absorber located between the bar and the profile. Therefore, the main role of guards — the reduction of accidents on the road and reducing the consequences of traffic accidents.

Such designs are easily installed and removed. Used metal road barriers not only on highways but also on construction sites, to separate pedestrian zones.

These fences are Made in accordance with special requirements of GOST. When choosing designs in addition to their practical purpose should be taken into consideration climatic and seismic conditions. In accordance with these factors, special attention is paid to the bearing supports.

Concrete railings

This is a rigid structure made of concrete or reinforced concrete. In the form of curbs used fencing:

• Height up to 35 cm, which have a rounded smooth edge and serve as decorative edges of pavements;
• Construction height from 35 to 50 cm with steep edges, capable of holding the vehicle on the roadway.

Besides there is a parapet fence — its height more than 50 cm In appearance, this design resembles a solid wall that separates the roadway from the pedestrian walkways and prevents the exit of the car on the sidewalk. Facade the surface of these fences generally sloping with a rounded top edge.

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Water-filled blocks

Quite common now a road barrier made of plastic. Such structures have significant advantages compared to concrete or metal. In addition they are easy to transport and install, these fences provide the most security in the event of a car accident.

The Most common are road blocks water filled, made of plastic, red and white. When filling with water via an existing in the upper part of the hole with a cork form a rather stable structure that serve to redirect traffic flow and to provide security for the secure fence road works. At the bottom of the boom has a hole for the drain. Plastic used to manufacture water-filled barriers, resistant to abrupt temperature changes, can withstand temperatures down to -40 ° C does not fade in the sun, easy to clean and does not require painting.

The Ability to place blocks under different angles to each other allows you to enclose any sections of the road, including various turns, as well as pits and trenches. On this fence it is possible to paste additional reflective markings. As a prominent visual landmark, plastic road barriers help to ensure traffic safety.

Other types of fencing

For security purposes, when carrying out construction works required to use special safety devices, made from as plastic and any other materials.

The Best option for building sites are considered bright plastic mesh, which are highly visible in any weather. They feature high strength, lightness and resistance to rot, allowing you to use them for a very long time.

Metal Mesh fixed type are used with the purpose of streamlining the movement of pedestrians and in order to prevent animals on the roadway.

Instead of a grid is sometimes used protective tape with alternating red and white. About the irregularities in the road soil, pits or any obstacles can prevent the soft cone-shaped guardrails, signal lights or mobile fencing with the logo.