Fire Safety Science Digital Archive

EXIT89 is an evacuation model designed to handle the evacuation of a large population of individuals from a high-rise building. It has the ability to track the location of individuals as they move through the building so that the output from this model can be used as input to a toxicity model that will accumulate occupant exposures to combustion products. EXIT89 uses occupant densities in building spaces to compute each occupant's walking speed. In this way, queuing effects can be modeled. One possible future use for EXIT89 is as the evacuation module of Hazard I, allowing that software package to extend its use to larger, more complex buildings. The model Described in this paper was designed to use the location smoke movement data generated by one Component of Hazard I and had to provide the occupant data required by the tenability Model incorporated into Hazard I The program has been tested using data from a fire drill in a high-rise office building with 700 occupants. It is written in FORTRAN.