Which class of combustibles includes solid materials?

The class of combustibles that includes solid materials is Class A. This classification is primarily associated with ordinary combustibles such as wood, paper, cloth, rubber, and many types of plastics. These materials are characterized by their ability to ignite and sustain a fire.

In a fire context, Class A materials are typically extinguished using water, which cools the fire and reduces the temperature below the ignition point of these combustibles. Understanding this classification is crucial for identifying the appropriate firefighting methods and ensuring safety during fire investigations.

Other classes, such as Class B, focus on flammable liquids and gases; Class C refers to electrical fires; and Class D is specific to combustible metals. Each class requires different extinguishing agents and techniques due to the properties of the materials involved. Therefore, recognizing that Class A encompasses solid materials is essential for effective fire safety management and understanding fire behavior.