engineering structures bridge building. structures structures are anything that are built or...
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Engineering StructuresBridge Building
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Structures
Structures are anything that are built or constructed.
These are things we live in, work in, learn in, and play in.
All structures preform different functions
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Apartment Building in Italy
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Forces• Forces affect structures
every day. – Wind– Water– Snow– Earthquakes
• Forces that act on structures are called loads.
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Loads• Live Loads
– Live loads change as a structure is used
• People• Furniture• Cars• trucks
• Dead Loads• Do not change, the
weight of the structure stay the same• Beams• Floor• Walls
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Stresses
Compression
Shear
Deflection
Tension
Torsion
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Compression
• A squeezing or crushing force produced when a pair of objects move toward each other
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Shear
• A cutting force produced when a pair of forces moving toward an object just miss each other
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Deflection
• A bending force
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Tension
• A pulling force produced on an object when a pair of forces move in opposite directions
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Torsion
• A twisting force on an object when a pair of forces rotate away from each other
St Mary and All Saints church in Chesterfield, UK
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Shapes
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Bridge Structures
BeamArch
Truss
Suspension
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Bridge DesignsNot straight beams