Cute Young Brunette Girl Wearing Necklace, Gloves And Stockings On Stairs

• The total run or total going of the stairs is the horizontal distance from the first riser to the last riser. It is often not simply the sum of the individual tread lengths due to the nosing overlapping between treads.
• The total rise of the stairs is the height between floors (or landings) that the flight of stairs is spanning.
• The slope or pitch of the stairs is the total rise divided by the total run (not the individual riser and treads due to the nosing). It is sometimes called the rake of the stairs. The pitch line is the imaginary line along the tip of the nosing of the treads. In the UK, stair pitch is measured in degrees from the horizontal.
• Headroom is the height above the nosing of a tread to the ceiling above it.