The world's largest clear, round roof of its kind is taking shape in Shanghai, China, using 529,100 pounds of GE Lexan polycarbonate sheet, marking one of the largest single orders of Lexan sheet ever received by GE Plastics to date, the company said.
The roof covers the upper departure area of Shanghai South Railway Station, which is around 990 feet in diameter and can hold as many as 10,000 people. The dome is designed to glow with both daytime light and lamplight at night.
``The custom-designed Lexan Thermopanel multiwall sheet is used for this special structure,'' spokeswoman Amy Godfrey said. ``GE Plastics utilized a global team of experts from GE China and GE Plastics' Specialty Film & Sheet business in France, Italy, India, and European headquarters in Bergen op Zoom, [the Netherlands].''
The sheet was made in GE Plastics' plant in Italy, said spokeswoman Marilyn Chua in Shanghai. She said the company's plant in China, Zhongshan Plastech Sunsheet Co. Ltd., does not have the capability yet.
Frans van de Noort, Asia-Pacific general manager for GE Plastics Specialty Film & Sheet, said the project's architects, as well as Chinese authorities, approved Lexan's use because of its clarity and dimensional stability.
Installation of the roofing system was completed last month.
The Chinese Ministry of Railways commissioned the station, with infrastructure support from the Shanghai municipal government, building design from France and components sourced globally.
Another Chinese government-funded infrastructure using Lexan sheet is Chongqing Stadium, the largest stadium in west China. A total of 231,500 pounds of Lexan sheet covers 387,500 square feet in the already-completed project.