In what type of construction have more firefighters been killed in fires compared to any other type?

The type of construction that has historically been associated with the highest number of firefighter fatalities in fires is Ordinary Type 3 construction. This type of construction typically consists of masonry or wood-frame walls and a wood roof. The combination of combustible materials and an often complex interior layout can create rapid fire spread and hazardous conditions.

In addition, Ordinary Type 3 buildings can have features like hidden voids and multiple floors that can become perilous during a fire scenario. Firefighters may encounter unexpected fire behavior as flames travel through these concealed spaces, leading to increased risks during suppression efforts. The lightweight construction elements often used within these structures can fail dramatically under fire conditions, contributing to the danger faced by responding firefighters.

Ultimately, the combination of these factors makes Ordinary Type 3 construction particularly dangerous during fires, resulting in a higher incidence of firefighter fatalities compared to other construction types.