Which statement best describes exterior cues used to identify construction type during planning?

• A. Interior finishes determine construction type
• B. Exterior materials, roof type, visible structural elements, and presence of firewalls
• C. Number of occupants determines construction type
• D. Color palette of exterior finishes determines construction type

Answer: (B)

Exterior cues reveal how a building is assembled and how it resists fire, which is why they’re the basis for identifying construction type during planning. The materials used on the exterior walls show how fire-resistant the enclosure is likely to be; masonry or concrete exteriors typically indicate higher fire resistance than wood, guiding the expected construction type. The roof type provides insight into the fire performance of the roof assembly, which is a factor in classification. What you can visually observe in the framing—whether the structural system appears as wood, steel, or concrete—helps determine the framing approach that corresponds to a construction type. The presence of firewalls is another direct exterior cue, signaling how fire separation between portions of the building is achieved, which affects the overall construction type and required protections. These exterior indicators give planners a reliable basis for code analysis early in the design process. Interior finishes, occupant numbers, or color choices do not determine construction type, though they may influence other code requirements.