• Fire Science and Engineering
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• v.26 no.2
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• pp.59-68
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• 2012

Predicting occupants' behaviors from the start of the fire to egress and reducing the time required for such process are critical matters that can decide success and failure of safe egress. In this research, research literatures and theories and fire cases were compared and analyzed so as to prepare logical grounds that could predict the process of beginning egress. As a result of this research, there was a significant difference in the time elapsed until people start evacuating due to spatial positions and quarantine from the place from which the fire originated and their auditive and olfactory signs did not recognize the fire instantly and they showed a strong tendency to recognize the fire by visual sign, warning announcement for egress and notice by others. And the results also showed that only a very small minority of occupants evacuated as soon as they perceived the fire and that variation in the time elapsed until evacuation begun for occupants were wider as the size of building was bigger and that accommodations such as hotel had wider variation in the time elapsed regardless of the size of buildings.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.1
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• pp.553-561
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• 2021

The purposes of this study are to propose evacuation recommendations through evacuation model considering occupancy load model in child care center with disabilities. To achieve these purposes, the survey on the occupancy load and egress model and evacuation experiments have carried out, and evacuation occupancy load model for child care center with disabilities are suggested. The results of this study are as follows : (1) The evacuation plan for children with disabilities are necessary special considerations according the type and levels of disability, and various egress means and method for children in child care center with disabilities conditions. (2) The evacuation occupancy loads are different with non-impaired children and evacuation occupancy loads and evacuation corridors width are necessary considering impaired children's evacuation behaviors. (3) The temporal evacuation area(refuge area) is essential for children with disability who are impossible vertical evacuation such as impaired children using wheelchair and cerebral palsy.

• Advances in Computational Design
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• v.4 no.2
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• pp.91-118
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• 2019

Every year, many people are severely injured or lose their lives in accidents such as fire, chemical spill, public pandemonium, school shooting, and workplace violence. Research indicates that the fate of people in an emergency situation involving one or more hazards depends not only on the design of the space (e.g., residential building, industrial facility, shopping mall, sports stadium, school, concert hall) in which the incident occurs, but also on a host of other factors including but not limited to (a) occupants' characteristics, (b) level of familiarity with and cognition of the surroundings, and (c) effectiveness of hazard intervention systems. In this paper, we present EVAQ, a simulation framework for modeling large crowd evacuation by taking into account occupants' behaviors and interactions during an emergency. In particular, human's personal (i.e., age, gender, disability) and interpersonal (i.e., group behavior and interactions) attributes are parameterized in a hazard-impacted environment. In addition, different hazard types (e.g., fire, lone wolf attacker) and propagation patterns, as well as intervention schemes (simulating building repellent systems, firefighters, law enforcement) are modeled. Next, the application of EVAQ to crowd egress planning in an airport terminal under human attack, and a shopping mall in fire emergency are presented and results are discussed. Finally, a validation test is performed using real world data from a past building fire incident to assess the reliability and integrity of EVAQ in comparison with existing evacuation modeling tools.