Atlas Copco double profile vibrating battens are required to level the surface of fresh concrete with edge-to-edge distance from 3 to 9 meters, and to compact the top layer up to 200mm thick (depending on the type of concrete). The design of the BD / BE vibrating bars is a system of two bars fastened together by aluminum cross-sections and a vibration-generating motor. The engine is usually electric or gasoline. Depending on the position of the installed vibration mechanism (vertical or horizontal), either vertical or horizontal vibrations act on the concrete, which alternately level and compact the concrete mixture. Repositioning is carried out by loosening the fixing bolt and turning the vibration unit 90º.