Characteristics of merging occupants in a staircase

Naohiro Takeichi*, Yoshiyuki Yoshida, Tomonori Sano, Takeshi Kimura, Hitoshi Watanabe, Yoshifumi Ohmiya

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

25 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)591-598
Number of pages8
JournalFire Safety Science
Publication statusPublished - 2005
Event8th International Symposium on Fire Safety Science - Beijing, China
Duration: 2005 Sept 182005 Sept 23


  • Density
  • Evacuation
  • Flow
  • Merging
  • Travel

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Building and Construction


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