Why Bridges Move… Practical Engineering

What must civil engineers design structures to accommodate?

• Electrical conductivity

• Thermal expansion

• Magnetic fields

• Chemical reactions

Tags

NGSS.HS-ETS1-3

NGSS.HS-ETS1-4

NGSS.HS-PS3-4

Why is the similar thermal expansion coefficient of steel and concrete important?

• It allows for effective use of reinforced concrete

• It increases electrical conductivity

• It enhances magnetic properties

• It improves chemical resistance

What is the primary challenge in bridge design due to thermal expansion?

• Preventing corrosion

• Ensuring aesthetic appeal

• Preventing buckling and other failures

• Reducing construction costs

Why are expansion joints critical in bridge design?

• They enhance the visual appeal of the bridge

• They allow for safe transitions over gaps

• They reduce the weight of the bridge

• They increase the speed of construction

Tags

NGSS.HS-ETS1-3

What is one method engineers use to manage thermal movement in structures?

• Using heavier materials

• Using slotted holes in connections

• Increasing the height of the structure

• Reducing the number of joints

Tags

NGSS.HS-ETS1-4

NGSS.HS-PS3-4