Drilled shafts, also known as bored piles, are deep foundation elements used to support structures. They are created by drilling a hole into the ground and then filling it with concrete. This method allows for strong support in various soil conditions, making it suitable for buildings, bridges, and other heavy structures. The construction of drilled shafts involves specialized equipment, such as drilling rigs, to ensure precision and stability. Once the hole is drilled, reinforcement bars may be added before pouring concrete. This technique is often preferred for its ability to minimize disturbance to the surrounding soil and environment.