Different blade adjustable building stairs, has stair string and mountings exhibiting elongated holes, where fixing units are fixed at holes, which are arranged in rows on top of each other at stair string

摘要

The stairs (2) has a stair string (4) and step (6) with mountings (18) and a rail (8). The string and the mountings exhibit elongated holes (16), where fixing units are fixed in the holes. The holes are arranged in rows on top of each other at the string. The holes are arranged at the mountings of the steps in a parallel position. The mountings are firmly connected with the steps or integral parts of the steps, and the string is formed as C-section. A hand rail of the rail (8) is formed as U-section, which connects a lateral side with a guardrail post (10) using the fixing units.