Creating Arced Landings - Autodesk 256B1-05A761-1301 - AutoCAD Revit Structure Suite 2010 User Manual

TIP To create a spiral staircase to multiple levels, create one helix for the stairs and then copy that helix to the
appropriate levels.

Creating Arced Landings

You can create arced landings if you sketch arced runs that share a center and a radius value.
Spiral arcs with same radius and center
Completed spiral staircase
The spiral is limited to fewer than 360 degrees. If you overlap spiral runs, a warning is displayed;
stringers and railings are not placed accurately.
Creating Arced Landings | 733