Excavators are capable of digging deeper and more efficiently earthmoving equipment. They can also be used to trench, lay pipe and load material. They are equipped with a hoe, similar to an excavating arm, made up of a boom, dipper arm, and bucket. The hoe, operator cab and engine compartment make up the upper structure of the excavator. The turntable is capable of rotating 360 degrees, allowing the operator to dig facing one direction and quickly rotate in any direction to load a dump truck.