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Chapter 6 - Technology
Structures Test
28
Other
8th Grade
12/05/2005

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Term
Bridge
Definition
A tree, a spider's web, a wasps nest, or a bridge. Which of these would not be a natural structure?
Term
Built to withstand a load.
Definition
All structures are:
Term
Triangle
Definition
Which geometric shape gives the greatest rigidity?
Term
Strut
Definition
A beam in compression is called a:
Term
Suspension Bridges
Definition
The world's longest bridges are:
Term
Tie
Definition
A beam in tension is called a:
Term
Steel Rods
Definition
What is used to reinforce Concrete when building bridges?
Term
Warren Girder Bridge
Definition
A bridge that uses a series of triangular frames is called a?
Term
car crossing a bridge
Definition
Of the following loads, which is NOT an example of a static load:
roof, desk, car crossing a bridge, you sitting still reading
Term
Cantilever
Definition
A beam capable of supporting a load at one end when the opposite end is anchored or fixed.
Term
Static
Definition
A load that is unchanging or changes slowly.
Term
Abutments
Definition
The supports where a bridge arch meets the ground
Term
Structure
Definition
Something that encloses and defines a space
Term
Pier
Definition
A structure used to support the center of a bridge
Term
Load
Definition
The weight, mass,or force placed on a structure.
Term
Dynamic
Definition
Load on a structure that is always changing
Term
Strut
Definition
A rigid structural member that is in compression.
Term
Truss
Definition
A structural element made of a series of triangular frames
Term
Stay
Definition
Cable that supports a bridge deck from above.
Term
Dynamic
Definition
Load on a structure that is always changing.
Term
Compression and Tension
Definition
What are the forces acting on the top and bottom surfaces of a beam loaded from above?
Term
Shear
Definition
A multidirectional sliding and separating force.
Term
Compression
Definition
A squeezing force.
Term
Tension
Definition
A pulling force.
Term
Tie
Definition
A rigid structural member that is in tension.
Term
Suspension Bridge
Definition
A bridge in which the deck is suspended from hangers attached to a continuous cable, which passes over towers and is anchored to the ground at each end.
Term
Arch Bridge
Definition
A type of bridge in which the compressive stress created by the load is spread over the arch as a whole.
Term
Reinforced Concrete
Definition
Concrete in which steel rods have been embedded to increase the concrete's resistance to tension.
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