What factors are assessed during a size-up of a fire scene?

During a size-up of a fire scene, one of the key factors assessed is building construction and potential hazards. This assessment is crucial for understanding how the structure is likely to behave under fire conditions, which can influence the fire's spread and intensity. Knowing the type of construction—whether it's wood-frame, masonry, or metal—provides critical insights into potential structural collapse risks.

Additionally, potential hazards such as the presence of hazardous materials, flammable substances, or electrical risks must be evaluated. This information helps firefighters determine the safest and most effective strategies for both firefighting and rescue operations. A comprehensive understanding of building construction and potential hazards informs decision-making and prioritization of actions on the scene, ultimately enhancing firefighter and civilian safety.