What 2 types of pile drivers are available to cranes?

• A. Pile hammers and vibratory pile drivers
• B. Hydraulic hammers and diesel hammers
• C. Rotary pile drivers and impact hammers
• D. Piling jacks and screw drivers

Answer: (A)

Two main ways cranes drive piles are impact driving and vibratory driving. An impact pile driver, or pile hammer, delivers short, high-energy blows to push the pile into the ground. These hammers come in various energy sources, such as diesel or hydraulic, but they all rely on striking force to drive the pile downward.

A vibratory pile driver uses high-frequency vibrations to loosen and reduce soil resistance around the pile, allowing it to penetrate the ground with less per-blow energy and often more efficiently. This method is especially useful in certain soils or near sensitive structures because it tends to cause less per-hit force.

Other options mix different tools or methods that aren’t the two standard crane-mounted pile-driving categories—rotary or screw methods, piling jacks, or non-hammer systems aren’t the primary crane-accessible pile drivers.