If a Type I building exceeds height and area limitations, codes generally require the use of which walls and/or floors?

If a Type I building exceeds height and area limitations, codes generally require the use of which walls and/or floors?

• A. Noncombustible Walls and Floors
• B. Fire Resistive Walls and/or Floors
• C. Curtain Walls
• D. Wood Walls

Answer: (B)

Exceeding height and area limits in a Type I building means the structure must rely on fire-resistive construction to keep compartments intact and protect egress during a fire. The goal is to slow or limit fire spread and maintain the building’s integrity long enough for occupants to evacuate and for firefighters to work. Therefore, the walls and/or floors must be fire-resistive assemblies—rated to resist heat for a specified period—rather than simply being noncombustible by material type. While noncombustible materials are typical for Type I, they don’t automatically provide the necessary time-based fire resistance. Curtain walls, unless specifically rated, do not automatically fulfill the required fire-resistive performance, and wood walls clearly do not meet Type I standards.

Exceeding height and area limits in a Type I building means the structure must rely on fire-resistive construction to keep compartments intact and protect egress during a fire. The goal is to slow or limit fire spread and maintain the building’s integrity long enough for occupants to evacuate and for firefighters to work. Therefore, the walls and/or floors must be fire-resistive assemblies—rated to resist heat for a specified period—rather than simply being noncombustible by material type. While noncombustible materials are typical for Type I, they don’t automatically provide the necessary time-based fire resistance. Curtain walls, unless specifically rated, do not automatically fulfill the required fire-resistive performance, and wood walls clearly do not meet Type I standards.