It is found that within 3 minutes of the initiation of the fire, fire-smoke spreads very rapidly through the hallways and stairways and completely blocks the escape routes of the building. The source of the fire is considered to be the fabric storage of the ground floor and nylon, a commonly used fiber in the RMG industries with a high heat release rate, is selected as the fuel. A number of factors including temperature, visibility, and CO concentration are analyzed to examine their effects on the tenability of different zones and floors. The modeling is conducted by using PyroSim®, a computational fluid dynamics (CFD) tool with the capability of simulating fire and optimized for low-speed, thermally-driven flow. Fire in a seven-storied ready-made garments (RMG) factory building, based on the actual drawing of an existing RMG building, is simulated and the tenability of the occupants is analyzed.
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