Assortment and dimensions of European rails
Rail types: - lungs - S;
- crane - A, CR, MRS;
- grooved - R, E.
Characteristics and dimensions of light rails Light rails are designed specifically for light rail transport, which is characterized by: - relatively small dimensions;
- relatively insignificant carrying capacity;
- lower message speed.
Light rails are designed for urban modes of transport, such as: regular and high-speed trams, railways that move within the city. The field of application of light rails is related to their shape and properties, which determines the rails as a suitable option for the formation of paths of short length, as well as as guides. This type of rails is lighter and more flexible than grooved and crane rails, and is characterized by a wide base. The flexibility of the rails and, at the same time, their stability allow the trains to move as gently as possible along the track. In addition, narrow-gauge rails have sound-absorbing properties.
Installation of light rails is carried out by welding the rails and using fasteners.
The dimensions of the S rail are determined by the height from 65 to 154 mm, the width of the head from 25 to 67 mm, the width of the base - 50–125 mm, and the thickness of the neck - 5–44 mm. The minimum weight of a European rail is 6.75 kg / m.
The steel rails S are regulated by the DIN 5901 standard.
Varieties and properties of grooved rails
Grooved rails are metal blocks with structural features in the form of a groove and a sponge, as well as wide soles. At the same time, the thickness of the neck of the rail beam is 2 times less than its head. Such a structure allows the use of grooved rails in an urban environment without hindrance, since they are easily built into the roadway, being located at the same level with it. That ensures unhindered crossing of paths by all road users. It is also important that the installation system of grooved rails has remained unchanged since the start of their production. This reduces the risks of rail installation and reduces the subsequent technical inconvenience.
Grooved rails, in comparison with analogs for railway tracks, are made from softer steel grades. This is due to the fact that grooved beams are used to form a track with a smaller radius than a railway one. They are most often used for the construction of tram lines of any type. Rails are laid using sleeper technology.
R-grade grooved rails are regulated by the EN 14811 standard, among their standard sizes are such types as 51R1 (Ri52), 59R2 (Ri59N), 60R1 (Ri60), 57R1 (Rh37), 67R1 (Rh37a) and others.
Class E rails are standardized by EN 13674-1, in their assortment the following list of types: 49E1 (S49), 50E6 (U50), 54E1 (UIC54). These rails belong to the development of Vignole with weights from 46 kg / m.