The landing at the bottom and/or top of a staircase providing support for the structure.
Stair riser
The vertical boards that are between the stairway treads.
Stair run
(1) One step width. (2) Horizontal distance of a flight of stairs.
Stair step
A stair tread.
Staircase
A series of steps, leading from one level of floor to another, including any landings between the floors.
Stairs
A series of steps that lead from one level of floor to another.
Stairway, closed-string
Stairway enclosed by walls on each side.
Stairway, housed
Staircase which uses rabbet joints, which are L-shaped cutouts at the edges of materials which allow pieces to fit flush against each other. These are then both glued and nailed, ensuring that the stairway will not have squeaks or dirt filled joints.
Stairway, open-string
Stairway with one side a wall and the other a railing with balusters.
Stairwell
The vertical shaft in a building containing a staircase.
