Which type of fire involves structural members that are typically completely of wood?

The type of fire that involves structural members completely made of wood is categorized as Type III Ordinary construction. This classification is characteristic of buildings where the exterior walls are made of non-combustible materials, but the internal structural framing is primarily composed of wood.

In Type III Ordinary construction, the wooden elements can include exposed wood beams and framing, which significantly impacts the fire behavior in such structures. These materials can ignite easily and contribute to fire spread, highlighting the importance of fire prevention and mitigation strategies in buildings of this type.

Understanding this construction type is crucial for firefighters, as it informs them of the potential hazards and behaviors of the fire, especially since wood structural members can fail rapidly under fire conditions. It is essential for effective firefighting tactics, planning, and resource allocation during operations.