Frequently Asked Questions
What information does the density plot give me?
Via a red to green run, the density plot visualizes the durations, for which congestions with densities higher than 4 P/m² exist. By default, the reference duration is 10% of the overall evacuation duration, so all cells marked red mark significant congestions.
The definition for significant congestions was developped due to the question, which congestions would be significant. As a first step, congestions were defined as areas with densities exceeding 4 P/m². During an evacuation, these densities are likeley to occur, leading to the next questions of which of these congestions would have a significant impact on the overall evacuation duration. This resulted in the definition, that these congestions would have to exist for more then 10% of the overall evacuation duration, to have a significant influence on the result. This is the definition for a significant congestion as described above.
If you want to reduce the overall evacuation duration, you should start by editing the geometry at the red areas of the density plot, marking significant congestions. Because of the 10% definition, new significant congestions can occur, when the overall evacuation duration is reduced.
I have modelled the complete building, but I am only interested in the evacuation duration of one room?
The amount of persons in a room can be logged by placing a so called log point into the room. From version 188.8.131.52 onward, the data of a log point can also be evaluated for a mean run. This requires some more calculations, so the computational speed will be reduced slightly, but you will receive statistical data of each logpoint for all simulation runs, including seed values for the minimum, maximum and significant run.
When importing a dxf file, the Editor shows the message "Floor too large"?
This message does not have to mean, that the size of your floor plan is too large (cell grid requires too much memory). The most common problem are the different coordinate systems, some CAD programs use. E.g. a global and a local coordinate system. When the CAD-files are imported into the editor, the referred origin is the origin of the global coordinate system. If the distance between the origin of the local coordinate system and the global coordinate system is too large, the message "Floor too large" appears.
Solution: Move the origin of the local coordinate system to the origin of the global coordinate system.
My CAD drawing has changed, how should I adjust my model?
Within the project directory, the dxf files are saved in the /DXF directory. Every level is represented by its own file. You can overwrite the appropriate file with the new dxf file. After reloading the project in the Editor, use the filter buttons to visualize the dxf content. You can then model the new geometry over the given dxf data.
Demographic and route data is lost, why?
The demographic and route data are saved in the project file (*.pg2). When you edit a project in the Editor, open it with the Simulation and edit the parameters, you will have to save the project and reload it in the Editor (use the reload button). Then, the parameters are updated within the Editor.
Forgetting this step, editing the project in the Editor and reloading it in the Simulation leads to the loss of the parameters.