Which class of fire involves wood, paper, plastics, and grass?

The correct classification for a fire involving wood, paper, plastics, and grass is Class A. Class A fires are characterized by ordinary combustibles, which include materials commonly found in residential and commercial fires. These materials ignite easily and can burn quickly, producing embers that may spread the fire further.

Understanding the characteristics of Class A fires is crucial for firefighters and responders as it helps determine the appropriate extinguishing methods and tools to be used. Water is often utilized to combat Class A fires because it effectively cools the burning materials and reduces heat, ultimately extinguishing the fire.

In contrast, other classes of fire involve different types of materials. Class B fires involve flammable liquids and gases, Class C fires pertain to energized electrical equipment, and Class D fires are related to combustible metals. Each class has distinct properties that dictate the strategies for firefighting and the extinguishing agents that can be safely used.