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Bridge Vocabulary

Vocabulary Review for Bridge Parts and Forces

TermDefinition
Tension force that pulls something apart
Compression force that pushes or squeezes something together
Shear force that tries to make one part of a structure slide past another
Torsion force that causes an object to twist on its axis
Arch Bridge Curve shape supports the load. Keystone helps to hold structure in place. Compression is the main force acting on this bridge.
Beam Bridge simple design. easy to build. not expensive to construct. used for short spans.
Suspension Bridge decking hangs from cables. The cables are hung from towers and anchored to abutments. used for longer distances. Cables are in tension, towers are in compression.
Truss Bridge Made of short straight members joined together to form triangles. Top in compression bottom in tension.
Live Load The weight of movable objects such as people, machines or vehicles using a bridge
Dead Load Weight of the bridge itself (nuts, beams, bolts)
Span length of bridge between abutments (or distance between supports)
Abutments supports at the end of an arch bridge that carry the load and keep the ends from spreading out
Buckling Yielding, collapsing When the force of compression over takes the bridges ability to remain stable
Dissapate To spread force over a greater area so that no one spot on the bridge has to bear the brunt of the concentrated force
Form The design or shape of an object (usually intended to be attractive to the consumer)
Function To be in working order during use
Aesthetics Study of beauty- Pleasing to the eye
Pier Vertical support such as a pillar or column that help support beam bridges
Caisson Underwater watertight chamber that allows a support tower for suspension bridges to be embedded into the floor of a body of water
Keystone The center stone at the tope of an arch bridge, locking the whole bridge together
Constraints Restriction or limitations placed on potential solutions to a problem (the No-No List)
Criteria Required specifications (items, elements or features) of a product or assignment (like a check list)
Created by: HKDambrosio
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