What is the primary concern of ordinary construction in fire safety?

The primary concern of ordinary construction in fire safety is the risk of fire and smoke spreading through concealed spaces within the building. Concealed spaces, such as those found in walls, ceilings, and attics, can allow fire and smoke to travel rapidly, often undetected, which poses a significant threat to life safety and can worsen the overall situation during a fire event. The design and materials used in ordinary construction methods typically have inherent vulnerabilities that make it easier for fire to spread through these hidden areas.

While structural integrity, emergency egress routes, and firefighter accessibility are also important considerations in fire safety, the unique challenge of concealed space fires is particularly critical in ordinary construction. The potential for rapid fire spread in these areas makes it a primary concern for firefighters and safety planners.