Installs, maintains and repairs machinery, equipment, physical structure, including pipe, electrical, HVAC, and computer systems by following specifications, blueprints, manuals and schematic drawings using hand tools, power tools, hoist, crane, and measuring and testing instruments. Lays out, assembles, installs and maintains pipe systems and related hydraulic and pneumatic equipment, and repairs and replaces gauges, valves, pressure regulators, and related equipment.