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Abutment |
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A solid masonry support for the end of a bridge or arch. An
abutment receives the thrust of a bridge and transmits it to
the ground or shore which abuts the structure.
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Bascule |
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That section of a bridge which opens, lifts or
draws, normally to permit ship passage along a water route blocked
by the bridge. These movable bridge sections are usually counterbalanced
or pivoted. They may swing, retract or lift at one or both ends.
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Cable Stays |
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Steel strands, like rope, that are bundled together
and placed on the pylon to help hold up the bridge.
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Compression |
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The stress resulting from a pushing force on
a structure.
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Dead Load |
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The stationary weight of the component parts
of a bridge.
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Deflection |
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The difference in material strength an object
has in relation to its width and height.
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Delta Frame |
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The triangular-shaped piece of a bridge’s
frame.
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Engineers |
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People who design bridges (also known as Structural
Engineers).
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Gantry |
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A device used during the construction phase of
bridges which picks up bridge segments and puts them in place.
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Girder |
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A large horizontal supporting beam which may
be steel or wood and is often built-up of several sections such
as plates and angles welded, riveted or laminated together.
A girder would support lesser beams.
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Live Load |
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The weight of moving vehicles or pedestrians
on a bridge.
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Pier |
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A vertical column holding up a bridge, usually
serving as intermediate support between abutments and resting
on footings below water.
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Pile |
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The “legs” of a bridge which give
it some support underneath the water or the ground.
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Pylon |
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The tallest part of a bridge; cables are placed
on it.
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Segments |
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Dried, finished pieces of a bridge made out
of concrete.
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Spandrel |
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A space above or between windows or arches. On
a bridge the broad upper triangular area between arches.
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Superstructure |
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That part of a bridge above the foundations consisting
of piers, abutments, trusses, girders, bascules, etc., except
for the deck and trim.
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Tension |
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The stress resulting from a pulling force on
a structure.
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