What is the characteristic of a fully developed fire stage?

A fully developed fire stage is characterized by all combustible materials reaching their ignition temperature and actively burning. At this stage, the fire has reached its peak intensity, and the entire area involved is engaged in combustion. This means that the heat, smoke, and flames produced are at their maximum, leading to a significant release of energy.

In the context of fire dynamics, a fully developed fire can lead to rapid spread and increased danger, as it often creates conditions where flashover—a sudden and rapid transition to a fully developed fire—can occur. This stage differs greatly from the earlier phases of a fire, where flames may be minimal or erratic, and where the fire may still be controllable. Understanding this characteristic is crucial for firefighters and emergency responders to effectively assess the situation and implement appropriate tactics for fire suppression and containment.