What is the total horizontal distance between stairs referred to as?

The term that refers to the total horizontal distance between stairs is known as the Total Run. This measurement is crucial in stair design as it indicates how much horizontal space the staircase occupies on a floor plan. Understanding the Total Run is significant for construction planning, ensuring that the stairs fit within the designated area while also adhering to safety codes and regulations.

In stair construction, the Total Run typically consists of the sum of the widths of all the treads, which translates to the horizontal extension of the staircase as it ascends from one level to another. A proper Total Run ensures that stairs are comfortable to use and meet building code requirements for safety and accessibility.

Other terms like "Stair Span," "Length of Staircase," and "Stair Rake" may relate to stair measurements but do not specifically define the horizontal distance covered by the stairs. For instance, "Stair Span" could be misconstrued to imply the space that a staircase occupies, but it is not a widely accepted term in construction. "Length of Staircase" may refer to the overall dimension but lacks the specificity of the horizontal component. "Stair Rake," meanwhile, usually pertains to the incline or angle of the staircase rather than the total horizontal distance.