Pile drivers are machines that use a heavy weight to support building foundations, bridges, and piers. The weight is raised using hydraulics, steam, or diesel power, and then released to strike a pile into the ground. A pile driver is a powerful piece of machinery that enters the ground deeply. It is used to construct “pole” supported structures such as bridges, piers, and cofferdams. For various construction projects, pile drivers are devices that push piles into the ground. Pilings can be driven completely underwater/underground or partially aboveground as parts of finished construction. They are made of tube steel, solid steel, and wood.