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Derived
from the trade of carpentry, a millwright originally was a
specialized carpenter who was trained as a carpenter and as well had
working knowledge of gear ratios, driveshaft speeds, and other
equations. The "mill" in millwright refers to the genesis of the trade
in building flour mills and other watermills and windmills.
A millwright today is someone who maintains or
constructs industrial machinery such as that which would be related to
assembly lines, also pumps, valves, printing presses, etc. Their job
requires a thorough knowledge of the load bearing capabilities of the
equipment they use as well as an understanding of blueprints and
technical instructions.
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A
pile driver or piledriver
is a mechanical device used to drive piles into soil to provide
foundation support for buildings or other structures. The term is also
used in reference to members of the construction crew that work with
pile-driving rigs.
Piledriver operators use large
machines, mounted on skids, barges, or cranes to hammer piles into the
ground. Piles are long heavy beams of wood or steel driven into the
ground to support retaining walls, bulkheads, bridges, piers, or
building foundations. Some piledriver operators work on offshore oil
rigs. Piledrivers work with a variety of hand and portable power tools,
and frequently cut, join and fasten metal construction materials using
welding equipment and torches.
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