6 Construction Failures, and What We Learned From Them

What was a major reason for the collapse of the Tay Bridge?

• Poor quality materials and design flaws

• An earthquake

• A ship colliding with the bridge

• Too many trains crossing at once

What caused the first collapse of the Quebec Bridge?

• It was struck by lightning

• The support pieces were holding too much weight

• A strong earthquake shook the bridge

• It was hit by a large boat

What phenomenon caused the Tacoma Narrows Bridge to collapse?

• A sudden, massive flood

• Aeroelastic flutter caused by wind

• Too many cars driving on it at once

• Poor foundation in the riverbed

What was the main reason the Hyatt Regency skywalks collapsed?

• Poor quality building materials.

• An earthquake shook the building.

• A last-minute change in the support rod design.

• Too many people dancing at once.

Why did the Citicorp Tower need a special weight system at its top?

• To make the building taller.

• To help it withstand strong winds.

• To provide extra space for offices.

• To make the building look more modern.

Who first discovered the instability of the Citicorp Tower?

• The original architects.

• A college engineering student.

• The New York City Police Department.

• Workers during routine maintenance.

What caused the Millennium Bridge in London to wobble when it first opened?

• Strong winds blowing against the bridge.

• The weight of too many vehicles crossing at once.

• Pedestrians walking in sync with each other.

• Faulty construction materials used in the bridge.