What is the temperature range typically associated with the flashover stage of a fire?

The flashover stage of a fire is a critical moment when all combustible materials in a room ignite nearly simultaneously, leading to a rapid spread of the fire. This phenomenon typically occurs at temperatures between 900°F and 1200°F. At this range, the conditions are ideal for the ignition of gases and materials due to the high heat, which causes materials to reach their ignition temperature.

Temperatures below this threshold, such as those in the ranges mentioned, may not provide sufficient thermal energy for flashover to occur. Therefore, the 900°F to 1200°F range is crucial in fire behavior studies, as it signals the transition from a fire burning in a controlled manner to an uncontrollable blaze that can pose significant hazards to life and property. Understanding this temperature range enables firefighters and responders to prepare for the potential developments in fire dynamics and implement appropriate safety measures.