Different styles of feature tread and how they may be used.
Mid flight treads.
Different styles of tread for through the flight and how they may be used.
End of flight treads.
The landings are end of flight treads or flight linking treads, these are just as important to take into consideration as any other tread.
These may come in many shapes and sizes, it is only the leading edge of this tread that is important in the design of the staircase.
Just working on this one.
Feature step construction.
How the feature curtail steps are assembled.