In most cases, typical construction uses completely ready -made staircases that are produced in factory conditions. However, the production of concrete stairs can be carried out directly at the construction site of the structure. Collective -type stairs include a couple of staircases and concrete beams. Collect such stairs right on the spot, using special kosour. These Kosuurs are made of reinforced concrete or metal beams. Depending on the location of the concrete steps, they are classified by: flat for through marches, concrete, lower, upper frizes and basic.
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The selection of concrete brand occurs depending on the location of the stairs. For example, during the construction of a staircase on the street, Bert in accounting for resistance to natural precipitation, temperature fluctuations. In some cases, concrete “B25” is quite enough. With a large number of floors, you need to understand that the design of the stairs should be easy, therefore, use brand B15, which will save the structure from excess its own load. As a rule, concrete steps are covered with special layers, which performs a decorative and protective function.