Installs, maintains, and repa1rs lighting, circuitry components, alarm systems, plumbing systems and components such as piping, values, sinks, sanitary fixtures, and fire suppression components, HVAC systems and components such as boilers, steam and gas piping and valves, chillers, pumps, direct expansion units, ventilation and exhaust fans, pneumatic and electric control systems, and medical gas systems and components. Performs a variety of construction, installation, repair and alterations to: brick, concrete, and other masonry building components, roofing systems and components, floor surfaces such as vinyl and ceramic tile, and carpet, wall components such as metal studs and sheet rock, and woodwork such as cabinets and furniture.