Semi-oval staircases are staircases, the projection contour of which is of circular shape. The main difference of such a staircase is the presence of a central supporting rack, which carries a load, and the steps fastened in a spiral way. All steps of the stairs are twisted around the rack, with a small exception of the latter ones, which are straight and ensure a safe and convenient completion of the construction. In addition, the semi-oval staircases have a more attractive and distinctive appearance compared to classical staircases. Selection of wooden covering of all the metal parts of the stairs will give it a completely wooden design.
Depending on the height from floor to ceiling, in rooms with a height of 280-300 cm, it is necessary to have a staircase indentation (cavity) of square or round shape for the installation of semi-oval stairs. A completely open area on the top of the stairs facilitates the installation process.
