Stair kit as reusable construction stairs in fashion of spiral staircase has tube section element installed on each individual step element and constructed as plug-in element for forming of central column

摘要

The stair kit (1) as reusable construction stairs in the fashion of a spiral staircase has a central column (2) as a support element upon which the individual steps are arranged in spiral form. A tube section element is installed on each individual step element (3) and is constructed as a plug-in element for the forming of the central column. The individual tube length section has a lower housing section and an upper adjoining push-on section. The ratio of the length of the push-on section to the length of the housing section is greater than 0.7.