Which statement best describes Type 3 construction?

• A. Exterior walls and structural members are noncombustible or limited; interior framing is wood
• B. Exterior walls are wood; interior framing is steel
• C. All elements are concrete
• D. Exterior walls are brick; interior framing is timber

Answer: (A)

Type 3 construction, often called ordinary construction, is defined by a noncombustible or limited noncombustible exterior shell (typically masonry such as brick or block) with interior wood framing. The exterior walls resist flame spread and help keep the building’s envelope more intact during a fire, while the interior framework is combustible wood. The statement describing exterior walls and structural members as noncombustible or limited, with interior framing as wood, matches this combination most clearly and explains how fire effects and life-safety considerations are shaped in this type of building. Other options describe scenarios that don’t align with Type 3’s characteristic mix of a noncombustible exterior with wooden interior framing.