These railway sleepers are elements that form part of the railway superstructure and have the main role of taking over the tasks received by themselves and of transmitting them, reduced accordingly, to the railway prism.
The sleepers also ensure, by means of the fastening elements, the track gauge, connecting the rails between them and forming with them the rail – crossbar frame. Also, the sleepers ensure, by supporting and their elastic embedding in the prism of the track, the stability of the track in vertical plane and in horizontal plane.
Wooden sleepers can be made of softwood (pine, fir, spruce, poplar, acacia, elm, etc.), hardwood (oak, beech, oak, trim, sky, etc.) or hardwood. special essence