Metal roof surfaces at Miller Park, home of the Milwaukee Brewers, are due for a new coating job.
The Southeast Wisconsin Professional Baseball Park District has invited bids to apply high-performance coatings to 5,950 square feet of exposed metal on the underside of the stadium’s unique fan-shaped, retractable roof.
Bids are due May 10.
The contractor will clean and coat galvanized metal surfaces with a two-coat moisture curing, aluminum and micaceous iron oxide system. Rust spots are to be hand or power tool cleaned to SSPC-SP 2 or 3 standards; if adhesion tests unsatisfactory, brush-off blast-cleaning of these areas will be necessary.
Ferrous metal will be solvent cleaned to SSPC-SP 1 and abrasive blast-cleaned to a commercial finish (SSPC-SP 6). A moisture curing, aluminum and micaceous iron oxide primer and moisture curing, aliphatic urethane will then be applied.
Concrete track beams will be abrasive blast-cleaned to SSPC-SP 13 and coated with a waterborne stain.
About the Stadium, Roof
The 11 year-old, $392 million ballpark seats 41,900 and is the only stadium to feature a fan-shaped convertible roof in North America, according to reports. The 12,000-ton, seven-panel roof structure can open and close in 10 minutes.
The roof was added to the design to guarantee a rain-out free Major League Baseball season for the Brewers each year and more comfortable viewing despite the frequently inclement weather in Wisconsin.
Los Angeles-based sports and entertainment firm NBBJ designed the stadium, working closely with Arup Group, and other design contributors including Eppstein Uhen Architects and HKS Inc.
The original mechanisms that move the roof were designed by Mitsubishi Heavy Industries America, but those have since been replaced due to failure.
Danger on the Roof
The unconventional roof design has not come without challenges, according to reports.
During construction, three workers were killed when one of the 400-ton roof panels was dropped by a crane during windy conditions. A camera crew filming the stadium construction that day captured the horrific accident and the investigation caused a year-long delay on the opening of the stadium.
Even after the accident, the structure has required expensive repairs, including the replacement of the roof’s bogie system and major elements of the pivot system.
Reported by Paint BidTracker, a construction reporting service devoted to identifying contracting opportunities for the coatings community.
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