Othmar ammann biography of donald

Ammann, Othmar

Ammann, Othmar(&#x;). Swiss-born engineer, who settled in the United Statesin , and over 35 years designed bridges in the N. Y. area. In he joined the Port of New YorkAuthority for which he designed the Bayonne Bridge (opened in ) as a graceful parabolictwo-hinged steel-arch structure, which made his name. In the same year his George WashingtonBridge was opened, with twice the span of any then existing suspension-bridge, and steel-framed towers suggesting vestigial Classicism. His elegant Bronx-Whitestone Suspension Bridgewas the first to use shallow plate-girdersas stiffeners instead of the more usual deep trusses. In he formed a partnership with Charles Whitney, establishing one of the leading engineering firms in the world. His majestic Verrazano-Narrows Bridge, NYC (completed ), was even longer than his earlier structures.

Bibliography

Billington ();
Rastorfer ();
Stüssi ()

A Dictionary of Architecture and Landscape ArchitectureJAMES STEVENS CURL

Othmar Hermann Ammann (–)

Bridge builder

Othmar H. Amman was born in Feuerthalen, near Schaffhausen in Switzerland, on 26 March After graduating from Zurich's industrial school, he studied structural engineering at ETH Zurich from to , most notably under Wilhelm Ritter and Ludwig Tetmajer. Following his initial activities in Switzerland and Germany, he moved to the United States in , eventually becoming an American citizen in Othmar H. Ammann died in Rye, New York, on 22 September

Revolutionizing bridge construction

Ammann already began examining the issue of bridging the one-kilometre-wide Hudson River between Manhattan and the residential areas of New Jersey at an early stage – initially as an employee of Gustav Lindenthal, the most prominent engineer in America at the time. When Ammann fell out with Lindenthal, he was eventually able to realise his steel suspension bridge project as chief engineer on behalf of the Port of New York Authority. He implemented the insight that as the dead load increases and therefore also the span, the importance of the roadway as a stiffening girder for the deformation of the load-bearing support structure recedes. With sufficient

Othmar Hermann Ammann Edit Profile

engineer

Othmar Hermann Ammann was a Swiss-American civil engineer. He constructed the George Washington Bridge, Verrazano-Narrows Bridge, Bayonne Bridge and the Lincoln Tunnel, and was also the director of the planning and construction of the Lincoln Tunnel.

Background

Othmar Ammann was born on March 26, in Schaffhausen, Switzerland. He was the son of Emanuel Christian Ammann, a hat manufacturer, and Emilie Rosa Labhardt, the daughter of the landscape painter Emanuel Labhardt.

Education

Ammann attended the Industrial School and the Swiss Federal Polytechnic Institute in Zurich, studying at the latter under Wilhelm Ritter, an authority on suspension bridges, and graduating in

Career

In Ammann was employed by the construction firm of Wartmann and Valette, in Brugg. Later he moved to Frankfurt-am-Main to work for Buchheim and Heister.

Hoping to gain experience in American bridge-building techniques, Ammann came to the United States in (he became a naturalized citizen in ). He became associated with the engineering firm of Joseph Mayer in New York, where he worked on problems

“Building an ugly bridge is a crime!”

How the Swiss Othmar H. Ammann (–) built the most important bridges in New York, but remained unsuccessful in his home country.

Cantonal architect, Geneva

Othmar Ammann lived in an age when engineers and architects were more likely to wear a straw hat than a hard hat when visiting a construction site. In the eyes of many professional colleagues, the Zurich native was the greatest civil engineer of the 20th century.
But he’s still relatively unknown in his country of origin. The hilly topography of Switzerland has always produced outstanding achievements in the field of bridge and tunnel construction. The rest of the work was done by the Eidgenössische Polytechnikum in Zurich, founded in , which became the ETH Zurich in It was here that, in , the young Othmar Ammann completed the training he had started eight years earlier at the Zurich Industrial School. One of his professors was Wilhelm Ritter, who in turn was the spiritual model for another renowned civil engineer who had received his diploma eight years earlier: Robert Maillart.
The work of the pioneers of the Polytechnic at this time differed from that of other

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