Spiral Staircase + Bookcase

One student did a very nice render in 3DS Max of a couple of her latest designs.  It features her parametric bookcase (an earlier assignment), a spiral staircase and some nice texturing\lighting done in Max.  Spiral stairs are fairly do-able in Revit.  The trick is when you want it to continue the helix through multiple revolutions.  The solution is, of course, multiple stairs.  The hard part is lining up stringers\rails etc.  Anyway, here is the render!