In Type 3 construction, which element is described as noncombustible or limited combustible?

• A. Exterior walls
• B. Interior structural members
• C. Roof coverings
• D. Interior floors

Answer: (A)

In Type 3 construction, exterior walls are the element described as noncombustible or limited combustible. This exterior boundary is the primary fire-resistive feature of this construction type, helping to slow flame spread from the outside and providing a safer, more fire-resistant shell for the building. Interiors can use combustible materials, such as wood framing, and roof coverings and interior floors may vary, provided they meet applicable fire codes and ratings. That’s why exterior walls are the correct choice here.