NorPlan
Junior Member
Exploring the Idea of putting an Addition the Back of the House.. Foundation is "L" Shaped with the Back part 20ft. wide.. At this point the Foundation wall rises above ground a good 4ft.+.. On the Right Side the Propane Furnace Exhaust Pipe sticks out of the foundation wall a foot in from the corner and the Vent Pipe right beside.. My Question , if we were to add an Addition , built on a Slabe Foundation.. How close could we come to the 2 Pipes ??