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7/30/2019 Modern Day Engineering Disasters and Lessons
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Michael Jordan made over $300,000 a game. With $40 million inendorsements, he made $178,100 a day, working or not.
If he slept 7 hours a night, he made $52,000 every night while visions ofsugarplums danced in his head.
If he went to see a movie, it would cost him $7.00, but he'd make $18,550while he was there.
If he wanted to save up for a new Mercedes S-Class ($90,000) it would takehim a whole 12 hours.
Assuming he puts the federal maximum of 15% of his income into a taxdeferred account (401k), at the beginning of the year, he will hit the federal cap of $9500 at8:30 a.m. on January 1st.
If you were given a penny for every 10 dollars he made, you'd be livingcomfortably at $65,000 a year.
Amazing isn't it?
However, if Jordan saves 100% of his income for the next 250 years, he'llstill have less than Bill Gates has today.
Game over. Nerd wins.
The answer to the eternal question "Isit better to be a jock or a nerd?"
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Modern Day Engineering
Disasters and Lessons
Stacy L. Warmack, P.E.
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Introduction
Stacy Warmack, P.E.
B.C.E. University of Minnesota 1996
P.E. Utah, California9+ years structural engineering experience
Experience in design large commercial to
small residential
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Types of Disasters
Human disasters
Disasters created by human ignorance or
willful destructionNatural disasters
Disasters created by forces of nature
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Human Disasters
Human errors/mistakes
Learn from history
Be aware of the natural cycle of overdesign-success-underdesign-failure-overdesign
Terrorism
Research possible threatsImplement building code changes where
necessary
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Human Errors
Hyatt Regency Hotel Walkway collapse,1981
Tacoma Narrows Bridge collapse, 1940
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Hyatt Regency HotelWalkway Collapse
Hotel was constructed in 1978
Two 117 ft long skywalks, suspended over
the atrium, collapsed during a dancecontest with over 2000 people in theatrium
A change during construction was blamedfor the collapse
114 people died, more than 200 injured
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Hyatt Regency HotelSkywalk Collapse
Skywalk Support Details
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Hyatt Regency HotelSkywalk Collapse
Photos after collapse
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Tacoma Narrows Bridge
Bridge succeeded successful constructionof other suspension bridges:
Brooklyn Bridge, 1891
Golden Gate Bridge, 1937
Bridge was swaying so much that it was
closed and a camera crew came out todocument the sway and captured thecollapse.
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Tacoma Narrows Bridge
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Terrorism
World Trade Center attack
Oklahoma City bombing
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World Trade Center, 9/11/01
~2,800 deaths atWTC, 2,200 injured
Estimated 20,000
people in WTC at timeof attack
Buildings collapseddue to fire
80% or more areestimated to havemade it out alive
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Oklahoma City Bombing, 4/19/95
Ryder truck full ofexplosives was parkedoutside of building and
detonated168 people killed, 850
injured, 1000+survived
Has led to restrictedspace outside ofpossible targetsbuildings
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Natural Disasters
Loss of life can be reduced with research,expertise and diligence
SnowWind/Hurricanes
Earthquakes/Tsunami
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Snow
Ice rink roof collapse,Germany
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Wind/Hurricanes
Hurricanes Katrina/Rita
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Hurricanes Katrina/Rita
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Indian Ocean Tsunami 12/26/04
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Earthquakes
1906 San Francisco earthquake, 8.3
Kashmir earthquake, Pakistan, 7.6,
10/8/2005
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Kashmir Earthquake
60% of buildingsmade of unreinforcedconcrete blockmasonry (CMU)
60% of CMU buildingswere destroyed
CMU building collapseaccounted formajority of deaths
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Kashmir Earthquake
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Utah Earthquakes
Were due for an earthquake
Small earthquakes happen every day
Geological record shows a major (6+)earthquake approximately every 2500 years
Its been ~3000 years since the last one
Infrequent seismic activity provides falsesense of comfort
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Utah Earthquake Preparedness
SEER - structural engineers emergencyresponse
Organizing to mobilize engineers whenneeded in a large-scale disaster
National program created by engineersresponding to world trade center attack
USSC/DES - UT Seismic Safety CommitteeCreating statewide plans for an emergency
Updating buildings such as U of U library,
State Capitol Building
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What You Can Do
In your home
Anchor cabinets, bookshelves, top-heavy
itemsAnchor water heater (strap to wall) and fit it
with a flexible gas supply
Be awareIn an earthquake, move away from things
that could fall on you. If you live in a CMUhouse, get out or stand in door jamb.
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Interested?
Learn about becoming an engineer
Follow a career path thats interesting and
exciting to you!!