Single Stringer Stairs-
The Single Stringer Stair with its singular beam is a favorite as a Helix stair as well as a design stair, where the blade supports feature when looking at it.
It is a widely used stair with Stingers from Rectangular or round tube/pipe.
on a Single Stringer Staircase the balustrade can either be added to one, or both sides. Can be Cables, tubing and/or glass.