Office Building, Other Business Pittsburgh, PA – Fire at U.S. Steel Tower extinguished by sprinkler system February 1, 2016 viking210 Pittsburgh firefighters responded early this morning to a fire in the U.S. Steel Tower in Downtown. According to a release by the city’s department of public safety, firefighters responded to the fire at Pittsburgh’s tallest building at about 4:45 a.m., but found that a small fire in a custodian room in the lower level of the building had already been extinguished by the building’s sprinkler system. There were no injuries and only minor damage, according to the release.
