What construction type is defined as having all structural components made of wood?

Type 5 construction is characterized by having all structural components made of wood. This type of construction typically includes single-family homes, townhouses, and other buildings where wooden framing is predominant. The materials used in Type 5 construction are lightweight and include dimensional lumber and engineered wood products. The lack of fire-resistant materials in this construction type makes it less resistant to fire than other types.

Understanding the characteristics of Type 5 construction helps reinforce the importance of fire safety measures when dealing with buildings made entirely of wood, as they can pose higher risks during a fire event compared to structures that utilize non-combustible materials or fire-resistant assemblies found in other construction types.