A deep foundation transfers a structure load to a deeper and more stable layer of soil or rock, typically located at a depth far below ground level and beyond the reach of a shallow foundation. Unlike shallow foundations typically used for smaller structures like houses or small buildings, deep foundations are used for larger and more complex designs, including high-rise buildings, bridges, and dams.
Building piles and drilled shafts can be used to transfer a load of a bridge or other structure to a more stable layer of soil or rock. This keeps the structure secure despite changing water levels or variable soil strengths.
Deep foundations are commonly used for structures in areas with poor soil conditions, like areas with high water tables or soft or loose soil. By transferring the structure’s load to a more stable layer of earth or rock, deep foundations keep the system steady and safe.
Another use for deep foundations is for structures requiring high precision or accuracy, such as nuclear power plants or scientific research facilities. In these cases, deep foundations provide a stable and secure foundation that doesn’t shift or settle over time.
