Which construction type is commonly known as wood frame?

Which construction type is commonly known as wood frame?

• A. Type 4 Construction
• B. Type 3 Construction
• C. Type 5 Construction
• D. Type 2 Construction

Answer: (C)

Wood-frame construction is built with wood as the primary structural material for walls, floors, and roofs—the framing members are wood studs, joists, and rafters. This lightweight, combustible framing is what people typically mean when they say “wood frame,” and it is especially common in housing. Because the structure itself is primarily wood, fire can spread quickly through the lumber and through concealed spaces, making rapid fire growth and potential collapse a bigger concern. Other construction types rely on noncombustible materials or different framing logic: heavy timber uses large solid wood members but isn’t classified as light-frame wood construction; ordinary (Type III) construction has noncombustible exterior walls but may use wood interior framing; and noncombustible types use steel or concrete throughout. So the construction type commonly known as wood frame is the one that uses wood framing for the structure.

Wood-frame construction is built with wood as the primary structural material for walls, floors, and roofs—the framing members are wood studs, joists, and rafters. This lightweight, combustible framing is what people typically mean when they say “wood frame,” and it is especially common in housing. Because the structure itself is primarily wood, fire can spread quickly through the lumber and through concealed spaces, making rapid fire growth and potential collapse a bigger concern. Other construction types rely on noncombustible materials or different framing logic: heavy timber uses large solid wood members but isn’t classified as light-frame wood construction; ordinary (Type III) construction has noncombustible exterior walls but may use wood interior framing; and noncombustible types use steel or concrete throughout. So the construction type commonly known as wood frame is the one that uses wood framing for the structure.