(1)
In clay-type soils subject to significant movement with a change in soil moisture content, the foundation depth of carports or garages connected to a dwelling unit directly or by a breezeway shall be approximately the same depth as the foundation of the main building.
(2)
Where slab-on-ground construction is used, a construction joint shall be provided between the main building slab and a slab serving an attached garage, breezeway or carport.
(3)
Except as provided in Section 9.12., foundations for attached unheated garages or carports shall be below frost level.