What is an example of an ordinary combustible material?

Ordinary combustible materials are substances that can easily ignite and burn in a fire. Typical examples include materials such as wood, paper, cloth, and many types of plastics. These items are commonly found in residential settings and can contribute significantly to the fuel load during a fire incident.

Wood and paper are classified as ordinary combustibles because they are organic materials that combust easily when exposed to sufficient heat. They undergo combustion reactions that release energy and produce heat, which can further propagate a fire. Understanding the nature of ordinary combustibles is essential for firefighters as it helps them anticipate the behavior of a fire involving these materials and determine the most effective suppression techniques.

In contrast, materials like metal scraps, solvents and oils, and electrical wiring do not fall into the category of ordinary combustibles. Metals require much higher temperatures to ignite and do not burn in the same way as organic materials. Solvents and oils are classified as flammable liquids, which have distinct properties and hazards compared to ordinary combustibles. Likewise, electrical wiring poses different risks associated with electrical fires rather than burning like common combustible materials.