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EXITT

Computer Models For Fire and Smoke
  • Model Name: EXITT
    Version: 1.0
    Classification: Egress model
    Very Short Description: EXITT is a node-and-arc type egress model for residential
    applications. From user selected initial positions people
    move via the shortest path toward a goal. The unique part
    of EXITT is the behavioral rules that strongly affect actions
    and time needed to exit.

    Modeler(s), Organization(s): Harold (Bud) Levin (retired) NIST, Building and Fire

    User’s Guide:
    Technical References:
    Validation References:
    Availability:
    Price:
    Necessary Hardware:
    Computer Language:
    Size:
    Contact Information:


    Detailed Description:


    Research Lab, Gaithersburg, MD (USA)
    Documentation included in the HAZARD I package
    Documentation included in the HAZARD I package
    -----
    Distributed only as part of HAZARD I
    -----
    see HAZARD I
    Basic
    see HAZARD I
    Richard Bukowski, NIST, (301) 975-6853,

    rbukowski@nist.gov

  • EXITT’s node-and-arc movement model and shortest path algorithm is typical for egress
    models. The unique part is the behavioral rules that were developed from interviews with
    survivors of fires recounting their actions. Actions are associated with family groups and
    include adult males investigating while adult females going to children, young children
    hiding and awaiting instructions. Investigation proceeds until an unambiguous
    confirmation of fire such as seeing the fire or smoke, or meeting a person who has, is
    received. Movement speed is affected by smoke density. These behaviors have a very
    significant impact on the time needed for safe egress and, as such, are an important factor
    in judging safety in residential fire scenarios.

 
 
 
 
   
 
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