A piledriver is a piece of heavy machinery used in construction to drive piles into the ground. Piles are long, slender columns made of materials like wood, steel, or concrete, which provide support for structures such as buildings and bridges. The piledriver works by dropping a heavy weight onto the pile, forcing it deep into the soil to create a stable foundation. There are different types of piledrivers, including vibratory and impact models. Vibratory piledrivers use vibrations to help the pile sink, while impact piledrivers rely on the force of a falling weight. Both types are essential in civil engineering and construction, ensuring that structures are built on solid ground.