2. Introduction
Skyscrapers are very tall buildings with many floors.
Skyscrapers have been ever a fascination for people
and a challenge for engineers.
3. History
The Great Pyramid of Giza built at 2560 BC stood at
146 meters and was the tallest man made structure
in the world for over 3800 years.
Burj Khalifa at an astonishing height of 830 meters in
Dubai is the current tallest man made structure.
4. Advantages
• Multipurpose: The whole structure can be used
as residential, commercial and institutional.
• Space: It increases the total floor area and its
best suited where land prices are expensive.
• Views: It provides long range view in congested
city.
• Symbolism: It gives the symbol of the country
or state for wealth, power, history etc.
5. Disadvantages
• Safety: Defective towers may pose a risk of
falling and cause severe damage.
• Cost of construction: All the process involved
are very expensive.
• Environmental impact: Noise pollution due to
large number of people and cars.
8. 5 Bank of America Tower
Location: New York City
Type: Commercial offices
Construction started: 2004
Completed: 2009
Cost: US $1 billion
Height: 366 m
Floors: 54
10. 4 Empire State Building
Location: New York City
Type: Office, observation
Construction started: 1929
Completed: 1931
Cost: US $635 million
Height: 381 m
Floors: 102
12. 3 Trump International Hotel
Location: Chicago
Type: Hotel
Construction started: 2005
Completed: 2009
Cost: US $847 million
Height: 423 m
Floors: 92
16. 1 One World Trade Center
Location: New York City
Type: Office, observation
Construction started: 2006
Completed: 2014
Cost: US $3.9 billion
Height: 541 m
Floors: 105
