A one- piece slab and footer that is poured at the same time on level ground.
A type of foundation with a concrete floor which is placed directly on the soil; the edge of the slab is usually thicker and acts as the footing for the walls
A concrete slab that is fully and evenly supported by an substrate such as the ground. Sidewalks are slabs on grade.
A type of construction in which footings are needed but little or no foundation wall is poured.
A slab floor that sits directly on top of the surrounding ground.