Heavy Equipment (construction), Heavy Machinery
Heavy equipment, heavy machinery, earthmovers, construction vehicles, or construction equipment, refers to Heavy-duty vehicle, heavy-duty vehicles specially designed to execute construction tasks, most frequently involving Earthworks (engineering), earthwork operations or other large construction tasks. ''Heavy equipment'' usually comprises five equipment systems: the Heavy_equipment#Implements_and_hydromechanical_work_tools, implement, Traction (engineering), traction, structure, power train, and control/information. Heavy equipment has been used since at least the 1st century BC when the Roman engineering, ancient Roman engineer Vitruvius described a Roman crane, crane in ''De architectura'' when it was powered via human or animal labor. Heavy equipment functions through the mechanical advantage of a simple machine, the ratio between input force applied and force exerted is multiplied, making tasks which could take hundreds of people and weeks of labor without heavy equipmen ...
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