Depending on their location, stairs can be classified as either

Depending on their location, stairs can be classified as either

• A. Exterior or Interior
• B. Interior or Exterior
• C. Primary or Secondary
• D. Structural or Non-Structural

Answer: (B)

Stairs are classified by where they sit relative to the building: interior or exterior. An interior stair is located inside the building and typically forms part of the protected egress path, often enclosed and fire-resistance rated to keep smoke and heat out of the exit route. An exterior stair sits outside the structure, exposed to weather, and serves as an outside route to the exterior or to a safe area, with considerations like slip resistance and weather durability. This distinction matters because the design criteria, protection levels, and maintenance requirements differ between interior and exterior stairs. Other terms like primary vs secondary describe how a stair is used rather than where it’s located, and structural vs non-structural isn’t the standard way to classify stairs by location. Therefore, interior or exterior is the correct way to categorize stairs based on location.

Stairs are classified by where they sit relative to the building: interior or exterior. An interior stair is located inside the building and typically forms part of the protected egress path, often enclosed and fire-resistance rated to keep smoke and heat out of the exit route. An exterior stair sits outside the structure, exposed to weather, and serves as an outside route to the exterior or to a safe area, with considerations like slip resistance and weather durability.

This distinction matters because the design criteria, protection levels, and maintenance requirements differ between interior and exterior stairs. Other terms like primary vs secondary describe how a stair is used rather than where it’s located, and structural vs non-structural isn’t the standard way to classify stairs by location. Therefore, interior or exterior is the correct way to categorize stairs based on location.