
The way CD3's
Floorplan
Creator creates walls for the maps it produces is a bit odd; it draws a 1 foot outside wall directly
on the roof profile. This not only puts half the wall
outside the roof profile but most real world roofs I've seen have an overhang of at least 1 foot so rain doesn't run down the outside wall. In the next edition of
City Designer the
Floorplan
Creator should have two additional fields ("Wall Thickness" and "Wall Offset") with the wall being drawn offset from the building footprint by half the thickness + the offset.