Driven piles are long, slender columns made of materials like concrete, steel, or wood that are installed into the ground to support structures. They are driven into the soil using a pile driver, which hammers them down to reach a stable layer. This method is often used in construction projects where the soil conditions are not suitable for shallow foundations. The primary purpose of driven piles is to transfer the load of a structure, such as a building or bridge, to deeper, more stable soil or rock layers. This technique is particularly useful in areas with weak or unstable surface soils, ensuring the safety and stability of the structure.