A Study on the Formation of Fire Pocket-Zones by the Shape of Ceiling Beams and the Effect of Smoke Exhaust Facilities in the Event of a Fire in Cheongna Apartment

This study analyzes fire and smoke discharge patterns during a recent electric vehicle (EV) fire at the underground parking lot of Cheongna Apartment, Incheon, focusing on an unaffected area (direction of the Morning vehicle). It challenges claims that secondary damage was caused by the degradation of pipe finishes and PVC insulation materials, and examines the potential role of partition walls along the ceiling in fire spread. The study aims to simulate similar environments to confirm fire spread direction and characteristics in unpartitioned underground parking lots, as well as analyze the impact of exhaust ventilation systems on reducing fire damage. The hypothesis suggests that a “Fire Pocket-Zone” forms due to the ceiling structure, and ceiling exhaust systems may delay fire spread to neighboring vehicles.