When are piles or piers necessary?

Piles or piers are necessary when dealing with significant loads or soft soil conditions because they are designed to transfer the weight of a structure deep into the ground, where the soil can provide adequate support. In situations where the soil near the surface is too soft, unstable, or unable to bear the load of a building, using piles or piers helps ensure stability by reaching deeper, more competent layers of soil or bedrock. This method is essential in preventing settlement, tilting, or potential failure of the structure.

The need for deep foundations through the use of piles or piers is particularly critical when a building will exert a substantial load, as greater forces require a more robust foundation solution. This is also true in areas prone to unstable soil conditions, where a shallow foundation may encounter problems. Employing piles or piers mitigates these issues, providing a reliable and durable foundation that maintains the structural integrity of the building over time.