HOW ENGINEERS BUILD DIFFERENT BRIDGES

What is the primary purpose of bridges?

• To look beautiful

• To connect two points over an obstacle

• To provide shelter

• To serve as landmarks

What are the three main forces a bridge's stability depends on?

• Tension, compression, and load

• Momentum, acceleration, and force

• Pressure, temperature, and volume

• Gravity, friction, and velocity

Which part of the bridge construction is usually made of a set of piles?

• The deck

• The superstructure

• The substructure

• The foundation

What material has historically been used to construct arch bridges?

• Stone and brick

• Plastic

• Rubber

• Steel

How are the forces transmitted through an arch bridge?

• Vertically downwards

• Evenly dispersed across

• Directly to the deck

• Only through the piers

What is the maximum individual span length typically seen in beam bridges?

• 100 feet

• 250 feet

• 1000 feet

• 500 feet

What unique feature do truss bridges have?

• Triangular supports

• Drawbridges

• Cantilevers

• Suspender cables

What year was the first cantilever bridge built?

• 1955

• 1923

• 1901

• 1867

What is a key advantage of cantilever bridges?

• They are the strongest type of bridge

• They can be built without any foundation

• They require no temporary structures for support

• They are the cheapest to build

What type of bridge is the Golden Gate Bridge considered?

• Beam bridge

• Arch bridge

• Cantilever bridge

• Suspension bridge