In terms of ease, speed, and cost-effectiveness, Monolithic Slab foundations are the most popular types of foundations available today. 'Monolithic Slab' translates to ‘all in one pour’, so the foundation is comprised of all the edges of the perimeter to replace the footer in one single pour and is made up of a layer of a concrete slab under the load-bearing walls along with a thicker area under the load-bearing walls.Īs part of the pouring process, the outside edges of the monolithic slab are kept thick so that they will serve as a foundation for the load-bearing wall, whereas the rest of the slab is kept at a thickness of 4 to 5 inches to serve as a load-bearing wall.