What is one common type of foundation used for homes built directly on the ground?

A slab-on-grade foundation is a common type of foundation used for homes built directly on the ground because it involves a single, continuous concrete slab that is poured directly on the ground. This type of foundation is particularly advantageous in areas where the soil conditions are stable and there is little risk of frost heave or water accumulation.

One of the main benefits of a slab-on-grade foundation is that it provides an excellent barrier against moisture and pests, as there is no space beneath the home for animals to nest or for moisture to collect. Additionally, it can often be more cost-effective and quicker to construct than other types of foundations, such as basements or crawl spaces, which require additional excavation and materials.

Crawl space and basement foundations involve creating a space underneath the living area, which may not be necessary or desirable in all building situations. A piling foundation is typically used in areas with unstable soil or where the load-bearing capacity of the ground is insufficient, making it less common for standard residential construction directly on the ground.