A Review of Building Evacuation Models - NIST Virtual Library

Any interaction between the occupants revolves around the idea that no two occupants can be in
the same grid cell at the same time. In order to calculate local density, PedGo calculates the
density of the three cells surrounding each individual cell (which turns out to be the ratio of the
occupied cells and the area of 6.25 m 2 ).
Use of fire data: None.
Output: According to the Traffgo website, PedGo can produce a variety of evacuation results
for the user. The model can generate text files that can be imported into spreadsheet programs,
pictures (bitmaps) of data plots (ex. density) or screenshots, and animations 24 .
Import CAD drawings: Yes. PedGo Editor is used for the conversion and preprocessing of
floor plans into the simulation format. The editor is shown here in Figure A.10 (ref 25).
Figure A.10: Floor plan editor in PedGo 25
When the user imports a dxf file, the Editor assigns colors to all of the elements on the drawing
(i.e. walls, doors, stairs). Then, the Editor transforms this data into cell information. Also, the
floorplan can be edited by moving, deleting or creating new elements. Passengers can be added
at this step to the plans. Also, egress routes can be created and assigned to various occupants
throughout the building.
Visualization capabilities: Yes, 2D visualization.
Validation studies: With fire drills and people movement trial data.
Special features:
Defining groups: Each group is assigned to a list of potentials which outlines their egress route
throughout the building.
A-18