Marlins Ballpark Retractable Roof
To encourage attendance in the humid Miami climate and to eliminate costly rainouts, the 37,000-seat Marlins Ballpark features a one of a kind three-panel moving roof that has become the signature architectural feature of the park. The 17-acre roof spans up to 560 feet. It moves atop a giant concrete column frame, parking above and providing shade for the main outdoor plaza where fans gather before and after games.
In designing their sixth U.S. retractable roof, Walter P Moore collaborated with mechanization consultant Uni-Systems, who provided mechanization design and supply. The team innovated to reduce the roof cost by $4,000,000 and eliminate costly weather seals between the roof panels altogether. By carefully evaluating the performance of the roof in the severe hurricanes that frequent south Florida, Walter P Moore designed the roof to survive the hurricane with the roof panels in a slightly open, or “gapped” position. This simple but groundbreaking departure from the tightly-sealed roof storm strategies of other retractable-roof venues in hurricane zones yielded savings of over 1,000 tons of steel in the 8,000 ton roof.