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Shimizu Mega-City Pyramid

Shimizu TRY 2004 Mega-City Pyramid
The Pyramid City arcology or megacity as featured on the Discovery Channel's Extreme Engineering programs
General information
Status Vision
Type Office, Residential, Research, Leisure
Location Tokyo Bay, Japan
Roof 2,004 m (6,575 ft)
Technical details
Floor area 8 square kilometres (3.1 sq mi)
Design and construction
Architect Dante Bini, David Dimitric
Developer Shimizu Corporation

The Shimizu TRY 2004 Mega-City Pyramid is a proposed Shimizu Corporation project for the construction of a massive pyramid over Tokyo Bay in Japan. The structure would be more than 14 times as high as the Great Pyramid at Giza, and would house 1,000,000 people. The structure would be 2000 meters (6,561 feet) above mean sea level, including 5 stacked trusses, each with similar dimensions to that of the great pyramid of Giza. This pyramid would help answer Tokyo's increasing lack of space, although the project would only handle 1/47th of the Greater Tokyo Area's population.[1]

The proposed structure is so large that it cannot be built with current conventional materials, due to their weight. The design relies on the future availability of super-strong lightweight materials based on carbon nanotubes presently being researched.


  • Materials and construction process 1
  • Interior traffic and buildings 2
  • See also 3
  • References 4
  • External links 5

Materials and construction process

First, the pyramid's foundation would be formed by 36 piers made of special concrete.

Because the seismically active Pacific Ring of Fire cuts right through Japan, the external structure of the pyramid would be an open network of megatrusses, supporting struts made from carbon nanotubes to allow the pyramid to stand against and let through high winds, and survive earthquakes and tsunamis.

The trusses would be coated with photovoltaic film to convert sunlight into electricity and help power the city. The city will also be powered by pond scum or algae.[2]

Interior traffic and buildings

Transportation within the city would be provided by accelerating walkways, inclined elevators, and a personal rapid transit system where automated pods would travel within the trusses.

Housing and office space would be provided by twenty-four or more 30-story high[3] skyscrapers suspended from above and below, and attached to the pyramid's supporting structure with nanotube cables.

See also


  1. ^ Statistics Bureau of Japan
  2. ^ Discovery Channel's Extreme Engineering Season 1, Episode 4
  3. ^ City in a Pyramid by Discovery Channel.

External links

  • Discovery Channel's Extreme Engineering: City in a Pyramid
  • Home Page for Bini Systems' proposed pneumatic construction method
  • TRY 2004-Shimizu's Dream - Shimizu Corporation (Project site)
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