Stair area 3.04m x 2.25m - 15 or 16 steps

I have had to design all sorts of curious things myself, but I would never have come up with something like that. You never stop learning... Luckily, that never happens in our industry.

In which industry do you design curious things?

In welcher Branche konstruierst Du denn kurioses ?

I design everything related to steel construction. Industrial halls, canopies, stair towers, bridges, balcony systems, railings. Even ship docks have been included.

But that has nothing to do with this staircase issue.