Beijing Olympics stadium architects are exploiting the flexural strength and design flexibility of polycarbonate sheet to help produce sophisticated, modern structures for three of the 2008 Summer Games sites.
The Shenyang Olympic Sports Center Stadium, Tianjin Olympic Center Stadium and Qingdao Olympic Sailing Center will feature roofs made with Bayer MaterialScience AG's Makrolon-brand PC sheeting.
Bayer MaterialScience supplied the sheets through subsidiary Bayer Guangyi Panel Co. Ltd. of Beijing, which manufactures them and provides sales and technical services to clients.
For the Shenyang stadium, Bayer developed a new kind of multiwall PC sheet to meet the stadium's design specifications. The 984-foot-long roof mirrors the outline of the olive leaf victory crown, so it required a flexible material for the curves and bends in the design.
The 215,000 square feet of PC sheet required for the Shenyang stadium marks the largest purchase of the material for a 2008 Olympics construction. The stadium will seat 60,000 people and cost 800 million yuan ($104.6 million).
The Shenyang stadium will host the preliminary soccer matches next summer. Shenyang officials also wanted the stadium to be an example of the city's new construction motif of combining nature and ecology.
The stadium ``will define the skyline with its distinctive and modern architecture,'' said Jurgen Dahmer, chief executive officer of Bayer Group in Greater China and president of Bayer MaterialScience in Greater China.
For the Tianjin Olympic Center Stadium, Bayer will supply 140,000 square feet of Makrolon PC sheeting for a futuristic roof intended to define budding Tianjin's skyline. The facility also will host some of the preliminary soccer matches next summer.
Qingdao's Olympic Sailing Center used 16,000 square feet of Makrolon PC sheeting in its roof design. The venue opens this month for sailing trials. Officials hope to turn the sailing center into a private marina after the Olympics.
In Olympic stadium construction, Bayer MaterialScience is no novice. The Spyridon Louis stadium built for the 2004 Olympics in Athens, Greece, boasts the largest stadium roof, as well as the largest transparent roof, ever built, according to Bayer.