The Winder staircase rises through only one storey and has treads and risers framed into square studs, one of them often one side of a door frame; it usually occupies a rectangular space.
B) Newel staircase C) Dog-leg staircase D) Winder staircase E) Open-well staircase
i*) Newel post l) Solid tread n) Half-landing p) Quarter-landing