For vacation we rent a beach house that belongs to one of my cousins. The house was built in the early 1990s before SC used a meaningful building code. The one set of interior stairs make a 180 degree wrap-around, but do this without a landing. Halfway up, four of the wooden stairs have very large triangular shape… sort of like a giant spiral staircase. As you climb or descend the stairs, each of these four treads makes you turn 45 degrees. The stairs work well, after getting use to them. Saves space by not having a landing. The rise and run of the “normal” stairs is ok.
Would this design be acceptable under today’s building codes?
Here are plan view type photos, stating at top of stairs: