Saw this in the Syracuse Sheraton: every stringer in the stairwell had a torch-cut opening so they could bolt the flight to the landing.
I don’t know if the flights came pre-assembled (minus the concrete, I assume), but the cutouts definitely have that “WTF do we do now?” aspect about them, don’t they?
Ah, well. I’ve been there & done that, too.
Haven’t you?
The Smell of Molten Projects in the Morning 