Concrete structure covered with ash treads stained dark wenge. Cover strips were fitted on the sides of the staircase, with both a decorative and a practical role: they give the staircase a solid look and at the same time keep the wall from getting dirty. The intermediate posts were fitted on wooden rails to make wiping the treads easier. The intermediate posts have different widths and thicknesses, giving the staircase a modern feel. For the same reason, the distances between the posts are not equal either, ranging from 6 to 15 cm.