US Steel Tower
| U.S. Steel Tower | |
|---|---|
 |
|
| Former names | USX Tower (1988–2001) |
| General information | |
| Type | Commercial offices (Authorized commercial offices) |
| Location | 600 Grant Street Pittsburgh, Pennsylvania |
| Coordinates | 40°26′29″N 79°59′41″W / 40.44132°N 79.9947°WCoordinates: 40°26′29″N 79°59′41″W / 40.44132°N 79.9947°W |
| Construction started | March 15, 1967 |
| Completed | September 30, 1971 |
| Cost | $50 million+ ($369.1 million+ today) |
| Owner | The 601W Companies |
| Management | Winthrop Management |
| Height | |
| Roof | 256.34 m (841.0 ft) |
| Technical details | |
| Floor count | 64 |
| Floor area | 2,336,253 sq ft (217,045.0 m2) |
| Lifts/elevators | 58 ( 1 freight car with an operator ) |
| Design and construction | |
| Architect | Harrison, Abramovitz & Abbe |
| Structural engineer | Leslie E. Robertson Associates |
| Main contractor | Turner Construction |
| References | |
U.S. Steel Tower, also known as the Steel Building (formerly USX Tower) is a 64-story, 256.34 m (841.0 ft) skyscraper with 2,300,000 sq ft (210,000 m2) of leasable space at 600 Grant Street in downtown Pittsburgh, Pennsylvania. It is the tallest skyscraper in Pittsburgh, the fourth tallest building in Pennsylvania, the 41st tallest in the United States, and the 187th tallest building in the world. It held its opening dedication on September 30, 1971.
The tower's original name when completed was the U.S. Steel Building and was changed to USX Tower in 1988. The name was finally changed back to the U.S. Steel Tower in January 2002 to reflect U.S. Steel's new corporate identity (USX was the 1990s combined oil/energy/steel conglomerate). Although no longer the owner of the building, U.S. Steel is one of the largest tenants. The building is located at 600 Grant Street, ZIP code 15219.
In the planning stages, U.S. Steel executives considered making the building the world's tallest, but settled on 840 ft (260 m) and the distinction of being the tallest building outside New York and Chicago. However, it eventually lost even that distinction to newer buildings erected across the United States. Prior to 1970, the tallest building in Pittsburgh, at 44 stories, was the Gulf Building, now known as Gulf Tower. In 2014, the elevators were modernized by "Schindler PORT".
The U.S. Steel Tower is architecturally noted for its triangular shape with indented corners. The building also made history by being the first to use liquid-filled fireproofed columns. U.S. Steel deliberately placed the massive steel columns on the exterior of the building to showcase a new product called Cor-ten steel. Cor-ten resists the corrosive effects of rain, snow, ice, fog, and other meteorological conditions by forming a coating of dark brown oxidation over the metal, which inhibits deeper penetration and doesn't need painting and costly rust-prevention maintenance over the years. The initial weathering of the material resulted in a discoloration of the surrounding city sidewalks, as well as other nearby buildings. A cleanup effort was orchestrated by the corporation once weathering was complete to undo this damage, but the sidewalks still have a decidedly rusty tinge. The Cor-Ten steel for the building was made at the former U.S. Steel Homestead Works.
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