What distinguishes cantilever footing?

A cantilever footing is characterized by its extension beyond the support base, which allows it to effectively carry loads from columns or walls that are positioned at the edge. This design enables the footing to transfer loads to the soil while balancing the moments against the overhanging portion.

When the footing extends beyond the width of the wall or column, it creates a lever arm that helps distribute the loads and increase stability, especially in conditions where lateral forces may be a concern. This feature is particularly important in structures where space is limited, or in situations requiring support for heavy vertical loads that cannot be centered directly on a wider base.

The other options do not accurately describe the distinctiveness of cantilever footings. For example, while cantilever footings can support walls, they are not limited to that function, and thus the assertion that they only support walls is not correct. Additionally, cantilever footings can vary in size and are not inherently smaller than other footing types; their dimensions depend on design requirements. Lastly, the use of cantilever footings is not restricted to flat terrains; they can also be employed in sloped or uneven ground conditions, given that proper design and engineering practices are followed.