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Characteristics Of Merging Occupants In A Staircase

Takeichi, N., Yoshida, Y., Sano, T., Kimura, T., Watanabe, H. and Ohmiya, Y., 2005. Characteristics Of Merging Occupants In A Staircase. Fire Safety Science 8: 591-598. doi:10.3801/IAFSS.FSS.8-591


The purpose of this study was to investigate the effects of merges on crowds in a staircase and the ease of merging with variations in crowd density, directions of merge, and whether the door joining a hallway to a staircase was opened or closed. The results led to the following conclusions: 1) merging is easier at lower population density; 2) merging is easier if the direction of the merging crowd is same as the direction of the crowd in the staircase; and 3) merging is easier if the door is initially opened, and the evacuation speed is decreased by 30% when the door is initially closed.


evacuation, travel, density, merging, flow

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