Types of Building Foundations
The only difference is that with a basement foundation you often use concrete block to create the stem wall that supports the home. Concrete block come in more than 30 sizes and forms. As for which one is right for your basement, local building codes usually stipulate the type required.
A concrete masonry unit (CMU) is a standard size rectangular block used in building construction. Those that use cinders (fly ash or bottom ash) are called cinder blocks in the United States, breeze blocks (breeze is a synonym of ash) in the United Kingdom, and hollow blocks in the Philippines.
Summary: A crawl space foundation has several advantages over basements and concrete slab foundations and is a way to save money when building a new home. A crawl space has several advantages over basements and concrete slab foundations: A crawl space elevates the house.
Slab-on-grade foundation As the name suggests, a slab is a single layer of concrete, several inches thick. The slab is poured thicker at the edges, to form an integral footing; reinforcing rods strengthen the thickened edge.