What is the primary function of foundation piers?

The primary function of foundation piers is to support girders. Foundation piers are structural elements that extend down into the ground and provide stability and support for the building above them. By transferring the load of the structure to the stable soil or bedrock beneath, piers help to prevent settling or shifting that could lead to structural damage. This is especially important for buildings situated on expansive soils or in areas prone to shifting.

While insulation, connecting walls to the foundation, and enhancing aesthetic appeal are relevant concepts in construction and design, they do not relate to the fundamental role of piers. Insulation relates more to energy efficiency and temperature regulation, walls connect to the foundation through a different framework, and aesthetic considerations typically involve surface finishes or design choices rather than structural elements like piers.