Final answer:
A footing is a heavy concrete course placed in the ground to support the foundation of a building. It is made of concrete, a mixture that hardens and functions like stone. option d is correct
Step-by-step explanation:
option d is correct A footing in construction is D) a heavy concrete course placed in the ground upon which the concrete foundation is set. This part of a building's foundation is designed to distribute the weight of the structure over a larger area to prevent sinking or uneven settling. Concrete, the primary material used for footings, is a mix of lime mortar, sand, small pebbles, and water that can be poured into forms or molds and, when dried, acts much like stone.
Modern concrete, improved over the centuries, is lighter, cheaper, and more easily created than actual stone, making it a staple in modern construction for its strength, durability, and thermal properties.
A footing is a heavy concrete course placed in the ground upon which the concrete foundation is set. It provides stability and support to the foundation by distributing the load of the structure to the ground. The footing is usually wider and deeper than the foundation walls to prevent settling or shifting.