Podcast
Questions and Answers
Which type of bridge relies primarily on a semi-circle shape to distribute forces?
Which type of bridge relies primarily on a semi-circle shape to distribute forces?
- Beam Bridge
- Arch Bridge (correct)
- Suspension Bridge
- Truss Bridge
A bridge is designed to withstand significant twisting forces. Which force is the primary concern for engineers in this scenario?
A bridge is designed to withstand significant twisting forces. Which force is the primary concern for engineers in this scenario?
- Compression
- Tension
- Torsion (correct)
- Shear
What distinguishes a 'live load' from a 'dead load' on a bridge?
What distinguishes a 'live load' from a 'dead load' on a bridge?
- Live loads are vertical forces, while dead loads are horizontal forces.
- Live loads are predictable, while dead loads are unpredictable.
- Live loads are dynamic and variable, while dead loads are static and constant. (correct)
- Live loads are caused by environmental factors; dead loads are not.
Which of the following is an example of a natural bridge?
Which of the following is an example of a natural bridge?
Consider a bridge that uses cables anchored at both ends to support the roadway. What type of bridge is this?
Consider a bridge that uses cables anchored at both ends to support the roadway. What type of bridge is this?
A bridge experiences a force that causes its materials to be pulled apart. What type of force is acting on the bridge?
A bridge experiences a force that causes its materials to be pulled apart. What type of force is acting on the bridge?
On a beam bridge, where is the force of compression most likely to be the greatest when a load is applied?
On a beam bridge, where is the force of compression most likely to be the greatest when a load is applied?
Which of the following bridge types is best suited for supporting heavy loads over relatively short spans, using a structure of interconnected triangles?
Which of the following bridge types is best suited for supporting heavy loads over relatively short spans, using a structure of interconnected triangles?
What part of the bridge is the roadway?
What part of the bridge is the roadway?
Which type of force is most likely to cause one layer of material to slide past another?
Which type of force is most likely to cause one layer of material to slide past another?
Flashcards
What is a bridge?
What is a bridge?
A passage over a gap or barrier.
What are natural bridges?
What are natural bridges?
Bridges created by natural processes, without human intervention.
What is a Beam Bridge?
What is a Beam Bridge?
Uses a horizontal beam for support.
What is a Suspension Bridge?
What is a Suspension Bridge?
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What is a Truss Bridge?
What is a Truss Bridge?
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What is an Arch Bridge?
What is an Arch Bridge?
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What is Compression?
What is Compression?
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What is Tension?
What is Tension?
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What is Torsion?
What is Torsion?
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What is Shear?
What is Shear?
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Study Notes
- A bridge allows passage over a gap or barrier.
- Natural bridges are created by nature, like stepping stones, vines, or fallen logs.
- Bridge design depends on the obstacle being crossed.
Types of Bridges
- Beam Bridge: Uses a horizontal beam for support.
- Suspension Bridge: Uses cables to support the load.
- Truss Bridge: Uses triangles as supports.
- Arch Bridge: Uses a semi-circle shape for support.
Forces on Structures
- Compression: Pushing force.
- Tension: Pulling force.
- Torsion: Twisting force.
- Shear: Sliding force.
Bridge Parts
- Superstructure: The top part of the bridge.
- Substructure: The bottom part of the bridge.
Types of Loads
- Load: An external force on a structure.
- Live Loads: Can change (e.g., cars on a bridge, people in a building).
- Dead Loads: Do not change (e.g., building materials).
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