Lack of typification

Instead of labor -intensive stairs from small -covered steps on metal beams and braids in large -block buildings, large -sized reinforced concrete elements of stairs from pre -prepared marches and sites began to be used. However, all this did not allow us to satisfactorily solve a set of issues related to the fundamental improvement of large-block construction on the basis of new techniques for the manufacture of blocks and maintaining the construction of industrial and flow methods.