Staircase system for use as e.g. housing space step for e.g. residential house, has flight of stairs structure that is completely covered on step lower side and visible side surface, and spacer that is arranged between saddle beams

摘要

The system (1) has a step structure including a step lining with a foot step and a step riser. A flight of stairs structure (10) includes saddle beams (11) which are spaced from each other, arranged parallel to each other and are connected with each other. The beams are made of wood and lie between cavities. The flight of stairs structure is completely covered on a step lower side and a visible side surface. A spacer (12) is arranged between the saddle beams.