Residential vs Commercial Structure Fires

Residential structure fires occur more frequently than fires in commercial occupancies. Nationwide, residential structure fires account for the majority of firefighter fatalities, but commercial structure fires account for the majority of multiple firefighter fatalities. There are many hazards inherent to commercial occupancies. The construction techniques associated with these buildings vary with age. The potential for collapse, localized or catastrophic, appears to be greater than that found in residential structures. External construction features such as mansard overhangs, parapets, large signs, and false fronts also pose hazards not frequently encountered by firefighters. Internal features present additional hazards for firefighters. There are often wide-open spaces with roofs supported by lightweight construction materials (metal bar joists, engineered trusses). Typically there are drop ceilings with void spaces, and there exists the possibility of entanglement from collapsed grid work or helical spiraled ductwork. The potential for high piled, high BTU output and possibly hazardous materials is great. Flammable roofing materials have been known to produce an interior overhead rolling roof fire. All of these building features are dangerous to firefighters and demand heightened awareness and a deliberate risk/benefit analysis.

What type of fires occur more frequently than fires in commercial occupancies?

Which type of structure fires account for the majority of firefighter fatalities nationwide?

What type of structure fires account for the majority of multiple firefighter fatalities?

What type of construction techniques associated with buildings vary with age?

What type of external construction features pose hazards not frequently encountered by firefighters?

What kind of internal features in commercial occupancies present additional hazards for firefighters?