A pier and beam foundation is a type of foundation commonly used in construction that consists of a network of vertical piers, or columns, and horizontal beams that support the structure.
When building on sloping land, the pier and beam foundation is often used to provide a stable and level surface for construction. This type of foundation allows for adjustments to be made to the height of individual piers to accommodate for changes in the slope of the land.
The piers are typically made of concrete or steel and are set into the ground at regular intervals to support the weight of the structure. The horizontal beams are then placed on top of the piers and provide a level surface for the floor of the building to be constructed upon.
Pier and beam foundations on sloping land can be more expensive and time-consuming to construct compared to other foundation types, but they provide a stable and level foundation for buildings on uneven terrain.