Mogharnas May Serve as Spiral Staircase Ceilings

Mogharnas may be used for the ceilings of spiral staircases. This is a very flexible potential use. In addition to the wide choice of styles which can vary depending upon the design motif chosen, the relative radius of the spiral staircase is also supported through the expansion. Please see the examples.
 
This is not found in the architectural record. It represents a significant new application of this space-enclosing system.