Precast piles are long, cylindrical structures made from concrete that are manufactured off-site and then transported to a construction location. They are designed to be driven into the ground to provide foundational support for buildings and other structures. The use of precast piles helps ensure consistent quality and strength, as they are produced in controlled environments. These piles are often used in areas with challenging soil conditions, as they can reach deeper, more stable layers of soil. By using precast piles, engineers can improve the stability and durability of structures, making them suitable for various applications, including bridges and high-rise buildings.