Bridges Flashcards
Why is cast iron a poor material to make bridges out of?
Cast iron can’t withstand tension forces very well.
What type of trusses are seen in the image?
Deck trusses
What is the arrow pointing at?
Abutment
Define the term compression as it relates to the force that acts on bridges.
Compression is the force that acts to shorten an object.
What type of bridge best describes the bridge seen here?
Suspension
When the force of compression is too large, the type of failure is referred to as…
Buckling
What type of trusses are seen here?
Pratt
Define the term tension as it relates to the force that acts on bridges.
Tension is a force that acts to expand or lengthen an object.
What type of bridge best describes the bridge seen here?
Arch
When the force of tension is too large, the type of failure is referred to as…
Snapping
What type of bridge best describes the bridge seen here?
Cantilever
What was the earliest bridge design used by man?
Beam
What type of bridge uses solid beams to transfer loads from a single point to a considerabley wider area?
Truss bridge
During the construction of the Brooklyn Bridge, a device was used to enable workers to dig on the river bottom. What was the device called?
Caisson
What type of trusses are seen here?
Warren
What force of Mother Nature caused the failure of the Tacoma Narrows Bridge?
Wind
The earlier types of this bridge were made of stone.
Arch
What is the arrow pointing at?
Keystone
This type of bridge is supported from above, not below.
Suspension
What type of bridge best describes the bridge seen here?
Beam
What type of bridge best describes the bridge seen here?
Cable stay
Which force do arch bridges handle very well?
Compression
What type of bridge best describes the bridge seen here?
Truss
