How Many Square Feet Can Be Had From a 60-Lb. Bag of Pre-Mixed Concrete?

Concrete poured for foundations is typically poured a level or close to level surface in what is called a slab. This slab provides stability for the structure which will be built atop it, resisting moisture and erosion.

For example, 5 square feet with a 4-inch slab requires two 60-lb. bags of pre-mixed concrete. This high demand makes pouring a foundation an expensive proposition for builders.