Vikings stadium will have half EFTE membrane roof in 2016

The southern half of the roof of the new Vikings football stadium will be comprised of a transparent ethylene tetrafluoroethylene (ETFE) membrane supported by steel

People might be familiar with ETFE from seeing it on the Beijing National Aquatics Center, commonly known as the Water Cube, during the 2008 Summer Olympics.

“They talk about it as the ‘new retractable,’ ” Kelm-Helgen said. “It lets all the light in.”

The northern half of the roof will be made of a hard, opaque material.

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