Tennis stadium's retractable roof requires spiral ductwork that moves
When renovations called for the addition of a roof to the 19-year-old Arthur Ashe Stadium in the New York City borough of Queens, sheet metal contractors were hired to make and install ductwork at the tennis facility named for the late tennis star.
What’s the big deal? The roof, designed to protect players and fans alike from the often unpredictable weather in the Northeastern U.S., is retractable. Like Serena Williams’ biceps during a tennis volley, the ductwork would have to be able to flex and move.