Pad footings (also known as spread footings) are indeed one of the most common types of foundations used in construction, particularly for smaller to medium-sized buildings and structures. They are characterized by their relatively simple design, consisting of a single, thick concrete slab that usually supports the load from a single column. Pad footings distribute the structural loads from supported column to the soil underneath, providing stability and preventing excessive settlement.

For larger buildings or structures with heavier loads, other types of foundations like strip footings, raft foundations, or piles may be more suitable. Each type of foundation has its advantages and is chosen based on factors such as load distribution, soil bearing capacity, settlement control, and construction feasibility. Therefore, while pad footings are widespread, their prevalence varies depending on specific project needs and conditions.