Shimizu Mega-City Pyramid

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The Shimizu TRY 2004 Mega-City Pyramid is a proposed project for construction of a massive pyramid over Tokyo Bay in Japan. The structure would be 12 times higher than the Great Pyramid at Giza, and would house 750,000 people. If built, it will be the largest man-made structure on Earth. The structure would be 2,004 meters (6,575 feet) high and would answer Tokyo's increasing lack of space.

Dimensions

Perimeter of the foundation above ground would be 2,800 meters. Area of the foundation is 8 square kilometres. Infrastructure is area approximately 25 km². Gross building area is about 88 km² of facilities layers:

• Layers 1 to 4: residential, offices, etc.
• Layers 5 to 8: research, leisure, etc.

The height of each layer is 250.5 m (for 8 layers, the pyramid is 2,004 m tall).

Usage

The building would be zoned into residential, commercial and leisure areas. 50 km² will be given over to some 240,000 housing units, enough for 700,000 people. Each building would have its own energy resources (sun and wind). 24 km² will be assigned to offices and commercial facilities intended to employ 800,000 people. The remaining 14 km² would be used for research and leisure purposes.

Materials and construction process

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

Because the world's 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 high winds, earthquakes, and tsunamis.

The trusses would be coated with photovoltaic film to convert sunlight into electricity and help power the city.

Large robots would assemble the truss structure, and air bladders would be used to elevate trusses above the first layer using a construction system proposed by Italian architect Dante Bini. Spheroid nodes at the connections between trusses would provide structural support and serve as transfer points for travelers.

Interior traffic and buildings

Transportation within the city would be provided by accelerating walkways, inclined elevators, and a Personal Rapid Transit system where individual driverless pods would travel within the trusses.

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

See also

• X-Seed 4000
• Sky City 1000
• Arcology
• Extreme Engineering
• Megacity

External links

• [Discovery Channel's Extreme Engineering: City in a Pyramid]
• [Home Page for Bini Systems' proposed pneumatic construction method]

 

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