In my last post, I mentioned that the Network Analyst toolbox in GIS could be used to create fire escape plans for buildings. In this post I will build on the last model and show how to create a fire escape plan.
The model consists of a CAD drawing with hallways drawn and converted to a network.
To find the nearest exit from any location in the building I will use the Closest Facilities tools. First, I need to create a point file marking the location of all the fire exits. Added to the model, we get:
Next, the exits point file is imported in to the closest facility tool and we place locations on each point in the building we want to find the correct exit for — shortest walk. The black squares are the locations we will solve for.
Finally, solve the problem. The results will be drawn on the map as shown below.