Thanks to the

When trying to replace metal braids with reinforced concrete, there was a need to collect stairs from individual small elements — reinforced concrete braids, site beams and steps. This excluded the use of metal beams, but did not save from the time -consuming assembly of numerous small details, their finishes and wet processes. Thanks to the joint work of designers, technologists and builders, reinforced concrete large -sized stairs and platforms were designed. Along with quantitative growth, their qualitative improvement occurred. Now the stair marches and sites are produced by factories in a completely complete form: with finished surfaces, including the lower cessonized surface of the ceiling, with ready -made mosaic troops and floor, tubes for hidden electric wiring are laid in the stoves. After installation in place, stairs and marches do not require any work, except putty and painting concrete surfaces.