Support bolt stairs has spiral steps and several support bolts with at least one connecting two tread steps, together with railing comprising hand rail, stair rods and possibly a lower beam

摘要

The support bolt stairs (1) has spiral steps (4) and several support bolts (5) with at least one connecting two tread steps (6). A railing is provided, comprising a hand rail (8), stair rod (9) and possibly a lower beam (10). At least one post (11) is arranged on a spiral step in the corner area. The hand rail and/or the lower beam of a railing module (12) are joined by a connecting device to the post or an adjoining wall.