Methods and apparatuses enable generation of a managed space layout model defining permissible pathways for travel through the managed space. Each permissible pathway can be defined as a line segment or an edge bounded by coordinate pairs. Items and locations within the managed space are associated with permissible pathways, which association defines how the items/locations can be reached via travel through the managed space. The information can be saved as a network of nodes, which defines the intersection of the permissible pathways and includes information about the pathways. With the layout model, a path can be determined through the managed space to accomplish work in the managed space. The layout data allows a path distance to be calculated for a given work task that involves travel through the managed space.