Transcript How High Can Buildings Go?

How High
Can Buildings Go?
How can we measure them?
SAFELY!!
Safe Measuring Estimate
5 ft
9 ft
X
1191 ft
Solving the Proportion
Woman’s Height
Woman’s Shadow
5
Building Height
=
Building Shadow
=
9
X
1191
9X
=
5*1191
9X = 5955
9X = 5955
9
9
X = 662 Feet
Actual Structure & Height
•
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)
Teachable Moments Begin:
How will you measure
the structure’s shadow?
1191 ft
Teacher Responds:
You pace it out.
1191 ft
Pacing It Out
• Count your average
steps in 100 feet
• Count steps as you
walk shadow’s length
• Then use a proportion
1191 ft
Pacing It Out
33 steps
393 steps
=
100 feet
X feet
33 X = 39,300
X = 1,190.9 feet
1191 ft
More Teachable Moments
So what are the
ACTUAL tallest
buildings in the
world??
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
CN Tower: Deck View
Still More Teachable
Moments
What about the World Trade Center?
World 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
Tallest Buildings (2007)
Year
Stories Meters Feet
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
?
Recent New Record Set
Height
Building & Location
Burj Khalifa,
Dubai, UAE
Year
1/4/
2010
Stories
160
M.
828
Ft.
2,717
Chief
Architect
Skidmore, Owings
& Merrill
How Tall Can Buildings Go?
• Nobody really knows
the answer
• Records are made to
be broken