A Burger King building in my area has a couple of overhangs above the drive-through. I've tagged these parts I am unsure of how to map the 'outline' member of this relation. Should it overlap all of these building parts, or should it only overlap the building's |
In general the convention in OSM is to map the bird's-eye view & not the footprint of the building. Most building will be mapped from aerial or satellite imagery so accurate mapping of footprints requires additional on-the-ground inspection. Mapping the building as visible from above generally ensures buildings are mapped consistently. Note that this is different from the typical approach of national topographic maps. |
Simple 3D Buildings, which is the tagging standard that the |