![]() ![]() ![]() It’s due to its physical strength, but also its ability to kind of elastically respond to things,” Peck said. “You think about that actually resisting all of the climate conditions of Minneapolis, and it’s quite impressive. There are three foil layers in each panel, with low-pressurized air in between for a total width around 25 inches. The ETFE material is in thin foil sheets just a tiny fraction of an inch thick. The panels being used on US Bank Stadium average 10 feet by 300 feet, so only 75 will be needed to maximize transparency. Taylor was joined on that trip by Edward Peck, a vice president and facade specialist for Thornton Tomasetti, the Chicago structural engineering firm for the stadium. There’s Allianz Arena in Munich as well as a couple of soccer stadiums in New Zealand, where Taylor visited shortly after HKS got the Minnesota project. ![]() The Water Cube in Beijing, used for swimming at the 2008 Olympics, became the largest building to incorporate ETFE. One of the ETFE pioneers was the founder of the German company Vector Foiltec, which was selected as the manufacturer for the US Bank Stadium roof. Tested to withstand weather from hail to hurricanes, ETFE began to be used in the 1980s for structures like shopping malls, zoos and schools, primarily in Europe. ETFE was originally developed by chemical company DuPont in the early 1970s as aeronautics insulation. There are a handful of ETFE buildings around the country, like a train station in Anaheim, California, an amphitheater in Kansas City, Missouri, and a waterpark in Wisconsin Dells, Wisconsin, but this will be the biggest. ![]() We think the perception of sitting in a facility enjoying a game when it’s either raining or snowing outside and still feeling like you’re experiencing an outdoor stadium is going to be phenomenal.” “This’ll be one of those well-recognized buildings in the industry. All customers and visitors are asked to stop in the office before proceeding further into the Campus.“The easy way out would have been a simple roof,” said Kevin Taylor, the senior vice president at HKS Architects who’s managing the project for the Dallas-based firm. Signs have been installed to provide direction.
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