how high can buildings go? how can we measure them? safely!!
TRANSCRIPT
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How High How High Can Buildings Go?Can Buildings Go?
How can we measure them?
SAFELY!!
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Safe Measuring Safe Measuring EstimateEstimate
5 ft
9 ft
1191 ft
X
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Solving the ProportionSolving the ProportionWoman’s Height
Woman’s Shadow=
Building Height
Building Shadow
5
9= X
1191
9X = 5*1191
9X = 5955
9X = 59559 9
X = 662 Feet
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Actual Structure & Actual Structure & HeightHeight
• Space Needle (Seattle Center)
• Built 1961 for ’62 World’s Fair
• Seattle, Washington
• Edward E. Carlson, designer
• 605 feet high (184 meter)
• Picture and information from
http://architecture.about.com/
library/blspaceneedle.htm
(Our estimate: 662 ft, included the antennae)
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Teachable Moments Teachable Moments Begin:Begin:
1191 ft
How will you measure the structure’s shadow?
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Teacher Responds:Teacher Responds:
1191 ft
You pace it out.
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Pacing It OutPacing It Out
• Count your average steps in 100 feet
• Count steps as you walk shadow’s length
• Then use a proportion
1191 ft
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Pacing It OutPacing It Out
1191 ft
33 steps
100 feet=
393 steps
X feet
33 X = 39,300
X = 1,190.9 feet
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More Teachable More Teachable MomentsMoments
So what are the ACTUAL tallest buildings in the world??
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The Tallest “Building”?The Tallest “Building”?• CN Tower was the
tallest “structure” until September of 2007
• Toronto, Ontario• 1,815 ft, 5 in height• Guinness World
Record for 31 yrs!• But many argued that
this was not a building
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CN Tower: Deck ViewCN Tower: Deck View
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Still More Teachable Still More Teachable MomentsMoments
What about the World Trade Center?
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World Trade CenterWorld Trade Center• Terrorists destroyed
the old “Twin Towers” on 09/11/2001– Built in 1973– 110 stories high– 1,368 feet high
• New “Freedom tower”– Completion Year
2013?– 1,368 feet high– 1,776 feet with spire
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Tallest Buildings Tallest Buildings (2007)(2007)
1. Taipei 101, Taipei, Taiwan 2004 101 508 1,667
2. Petronas Tower 1, Kuala Lumpur, Malaysia 1998 88 452 1,483
3. Petronas Tower 2, Kuala Lumpur, Malaysia 1998 88 452 1,483
4. Sears Tower, Chicago 1974 110 442 1,451
5. Jin Mao Building, Shanghai 1999 88 421 1,381
6. (Under Construction) Freedom Tower, New York City 2013 ? 417 1,368
(7.) Two International Finance Centre, Hong Kong 2003 88 415 1,362
(8.) CITIC Plaza, Guangzhou, China 1996 80 391 1,283
(9.) Shun Hing Square, Shenzhen, China 1996 69 384 1,260
(10.) Empire State Building, New York 1931 102 381 1,250
Year Stories Meters Feet
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Recent New Record SetRecent New Record Set
Building & Location Year Stories
Height
ChiefArchitect M. Ft.
Burj Khalifa,Dubai, UAE
1/4/2010
160 828 2,717Skidmore, Owings
& Merrill
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• Nobody really knows the answer
• Records are made to be broken
How Tall Can Buildings How Tall Can Buildings Go?Go?