Construction has been completed on the two underground levels of Expo Boulevard, the main gateway to the Expo Site'The 1,045-meter-long boulevard will serve as a transportation and commercial center involving catering and entertainment services. It will be completed in October.
The 2.4 million square meters construction is the largest in the site.
Several steel structures were erected above the foundation of the under-construction boulevard in September. They will be assembled into a structure shaped like the end of a horn pointing skyward that will be about the size of two professional basketball courts.
This "Sunny Valley" can collect rainfall and disperse sunshine into the underground level of the boulevard, said Ding Hao, deputy director general of the Bureau of Shanghai World Expo Coordination. Six of these horn-like structures will be built along the boulevard.
It will also use river water for cooling. This can save 432,000 kilowatt hours of electricity and reduce carbon dioxide emissions by 432 tons every year.
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