In a Type I high-rise building under fire conditions, what is the primary concern?

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Multiple Choice

In a Type I high-rise building under fire conditions, what is the primary concern?

In a Type I high-rise fire, the most immediate hazard is flying glass from windows or curtain walls. When a high-rise fire heats glazing, thermal stresses and pressure changes can cause panes and the façade system to fail explosively, sending shards outward at high velocity. This creates a serious risk to firefighters and occupants near the exterior and can quickly compromise rescue operations or exterior cohesion of firefighting lines. While fires can ignite contents and structural concerns exist, the external glass hazard tends to be the most immediate and deadly threat that needs to be guarded against first. Understanding this helps crews maintain safe distances from the façade, use protective barriers, and anticipate glazing failures as a priority during suppression efforts.

In a Type I high-rise fire, the most immediate hazard is flying glass from windows or curtain walls. When a high-rise fire heats glazing, thermal stresses and pressure changes can cause panes and the façade system to fail explosively, sending shards outward at high velocity. This creates a serious risk to firefighters and occupants near the exterior and can quickly compromise rescue operations or exterior cohesion of firefighting lines. While fires can ignite contents and structural concerns exist, the external glass hazard tends to be the most immediate and deadly threat that needs to be guarded against first. Understanding this helps crews maintain safe distances from the façade, use protective barriers, and anticipate glazing failures as a priority during suppression efforts.

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