What is the name of the concrete pour that supports the foundation wall?

The correct answer, "footer or footing," refers to the concrete pour that serves as a structural element supporting the foundation walls of a building. This component is crucial in distributing the weight of the structure above it to the ground below, helping to prevent settling or shifting that could compromise the integrity of the building. The footer is typically wider than the wall it supports, providing stability and preventing issues associated with differential settling.

A header, in contrast, typically refers to a structural member placed across an opening, such as windows or doors, and does not function as a foundation support. A slab refers to a flat, horizontal piece of concrete that can function as a floor or a base but does not have the specific role of supporting the foundation walls directly. An anchor generally relates to securing structures to prevent movement or uplift rather than supporting foundation walls. Therefore, the footer or footing is specifically designed for the foundational support role, distinguishing it from other terms related to construction.