modern day engineering disasters and lessons

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!!

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