The U.S. Steel Tower and PPG
Place are two very different buildings to look at in downtown Pittsburgh.
However, they do have one thing in common: both structures were created to
showcase the materials that they were made of, which make them interesting from
an engineering perspective.
PPG place is rightly called
"the crown jewel of Pittsburgh skyline." You might have seen this
building in famous TV series and Hollywood movies like Sudden Death, Inspector
Gadget, and Land of the Dead. Both buildings are the best sightseeing spots in
downtown Pittsburgh during the night, but not long ago, these two buildings
competed with each to become the tallest structure of the state. (The U.S.
Steel building was intended from the start to be the tallest structure in the country.)
U.S. Steel used their then-new
product called Corteen for the construction
of these buildings. Today taller buildings have emerged in the city, yet these
two buildings remain popular because of their unique design and engineering
material, and the material used for their construction and energy efficient
design continues to make them popular among engineers and architects. After all
these buildings have added the "X factor" to the beauty of the city
and allowed Hollywood directors to bring an element of thrill to their movies.
MNC's like Rockwell International, Ernst and Young, PNC Bank, Sbarro, and Deloitte have remained tenants in these
buildings. In the past these buildings have served as home to many giants of
the business world.
The two buildings are
separated by only a few city blocks, and both uniquely contribute to the
beautiful Pittsburgh skyline. Their design as well as the construction
materials chosen for the buildings makes them unique in downtown Pittsburgh.
The U.S. Steel Tower exhibits Cor-ten steel and
PPG Place displays Solarban Twindow glass.
The U.S. Steel Tower is
the older of the two buildings. It was completed in 1970 and is the tallest
building in downtown Pittsburgh. The building was designed by Harrison, Abramovitz, and Abbe and is 841 feet high. At the time of
its opening, it was the tallest building in the U.S. outside of New York City
and Chicago, and is currently the 37th tallest building in the U.S. The
building has fireproof columns filled with liquid and was the first building to
implement this technology at the time of construction. U.S. Steel wanted to
exhibit Cor-ten steel, a new product for the
company in 1970. Cor-ten resists corrosion by
forming a dark brown oxidation layer over the metal. Cor-ten
does not need to be painted or treated after the initial weathering of the
material. To showcase the material, the architects placed the steel columns on
the exterior of the triangular-shaped building. In total, the tower has 64
floors and contains over 40,000 metric tons of steel. U.S. Steel no longer owns
the building, but the company remains one of its largest tenants.
One PPG Place, part of the PPG
Place complex, is also located in Pittsburgh; however, the younger of the two
buildings features a different material– glass. In total, PPG Place contains
six buildings and covers three city blocks. PPG Place was opened in 1983 and
was completed in 1984. The gleaming glass and steel structures, known worldwide
for their breathtaking design, were
developed by John Burgee Architects with the internationally renowned architect
Philip Johnson from New York. One PPG Place is shorter than the U.S. Steel
Tower; it is 635 feet tall and has 40 floors.
PPG Industries (formerly
Pittsburgh Plate Glass Company) started the project and is still the largest
tenant of the complex. The buildings contain 19,750 pieces of glass and have
231 glass spires. In total, over one million square feet of reflective
insulating glass was used in the construction. Nearly one million square feet
of neutral silver Solarban 550 clear
reflective glass units were used by PPG. The tower is glazed with 19,750 pieces
of glass used for the construction of this building, which is a massive figure
in itself. The glass pieces are PPG’s Solarban 550 Twindow, which are energy-efficient. Heat is reflected away
from the building in the summer and reflected inward in winter. Heat from
internal equipment is also collected and recycled throughout the building. PPG
Place has been compared to a castle and is said to have been inspired by many
architectural significant structures including London's Victoria Tower, H.H.
Richardson's Allegheny County Courthouse, and Charles Klauder's Cathedral
of Learning in Pittsburgh.
In a city that is known for
its unique and inspiring structures – from inclines to bridges, tunnels to
buildings, the U.S. Steel Tower and PPG Place live up to Pittsburgh’s high
standards. Both buildings showcase very different materials, and both are
showcase pieces of the Pittsburgh skyline.