Test your knowledge on influential structural events that changed how we build environments safer!
After the Tacoma Narrows Bridge collapsed in 1940, what did engineers learn to always factor when designing future suspension bridges?
Resonance frequency, vertical movement, torque and weight
Gale force winds
Side-to-side movement
In 1945, an unarmed B-25 Mitchell Bomber crashed into The Empire State Building due to bad flight conditions and pilot error. The structural integrity of the building was not affected. Which DID NOT contribute to the building staying upright during this event?
The building was designed compartmentally, with each floor and room separated with fire partitions.
All steel columns were enclosed in cinder concrete for additional fire proofing and column strengthening.
The elevators' emergency braking systems.
The building façade absorbed most of the plane’s impact.
The 1981 Kansas City Hyatt Regency walkway collapse prompted the engineering industry to re-evaluate professional ethics and documentation procedures. What was the failed component that ultimately caused the walkway to collapse?
The bolts from the trusses.
A threaded hanger rod and connection detail.
The bolts from the handrails.
In 1978, what was the major design flaw discovered with the Citigroup Center in Manhattan?
The bolted joints for the chevron bracing would break in 70 mph winds.
The building needed more chevron bracing.
The column layout was not efficient.
The 2011 Great East Japan earthquake and tsunami changed the way seismologists analyze earthquakes. What was one of the biggest discoveries?
The four earthquakes (ranging from 6.0 to 7.2 on the Richter scale) preceding the magnitude 9.0 quake were actually foreshocks.
The Pacific Plate subduction zone experiences greater seismic gaps between megaquakes.
The tectonic slip was in a relatively shallow region of the subduction zone, 5 to 12 miles below the ocean floor.
Which of these buildings lost its original roof because of insufficient snow load support?
St. James Cathedral in Seattle, WA
The Omni Coliseum in Atlanta, GA
The Fairmont Chateau Lake Louise in Alberta, Canada
In the July 2015 New Yorker article "The Really Big One" by Kathryn Schultz, the story covered the Cascadia subduction zone and its impending catastrophic earthquake. What did the much-discussed article cite to support its narrative?
A scientific reconstruction of events of a hypothesized magnitude 9.0 earthquake on January 26th, 1700 near the Washington coast.
A hypothesized rise in sea level from an "orphan" tsunami in 1700.
How Japan and the Pacific Northwest are both situated on the Pacific Ring of Fire.
What is causing the Leaning Tower of Pisa to lean?
A ruptured water table.
The foundation was constructed on an old river delta of soft sand and silt.
It was built below sea level.
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