Fritz Leonhardt (12 July 1909 - 30 December 1999) was a German structural engineer who made major contributions to 20th century bridge engineering, especially in the development of cable-stayed bridges. His book "Bridges: Aesthetics and Design" is well known throughout the bridge engineering community. is the 193rd day of the year (194th in leap years) in the Gregorian calendar. ... Year 1909 (MCMIX) was a common year starting on Friday (link will display full calendar) of the Gregorian calendar (or a common year starting on Thursday of the 13-day-slower Julian calendar). ... For other uses, see Stuttgart (disambiguation). ... is the 364th day of the year (365th in leap years) in the Gregorian calendar. ... This article is about the year. ... The Universität Stuttgart is the University of Stuttgart. ... Purdue redirects here. ... structural engineer is an engineering profession who practices structural engineering. ... Image:IStructE logo. ... The Cologne Rodenkirchen Bridge is a suspension bridge located in Cologne, Germany. ... The Fernsehturm Stuttgart (TV Tower Stuttgart) is the worlds first TV tower built from concrete (and prototype for many towers of that kind all over the world). ... The Werner-von-Siemens-Ring is considered to be among the highest ranking awards for technical sciences in Germany. ... is the 193rd day of the year (194th in leap years) in the Gregorian calendar. ... Year 1909 (MCMIX) was a common year starting on Friday (link will display full calendar) of the Gregorian calendar (or a common year starting on Thursday of the 13-day-slower Julian calendar). ... is the 364th day of the year (365th in leap years) in the Gregorian calendar. ... This article is about the year. ... structural engineer is an engineering profession who practices structural engineering. ... A cable-stayed bridge is a bridge that consists of one or more columns (normally referred to as towers or pylons), with cables supporting the bridge deck. ...

Biography

Born in Stuttgart in 1909, Leonhardt studied at Stuttgart University and Purdue University. In 1934 he joined the German Highway Administration, working with Paul Bonatz amongst others. He was appointed at the remarkably young age of 28 as the Chief Engineer for the Cologne-Rodenkirchen Bridge. For other uses, see Stuttgart (disambiguation). ... The Universität Stuttgart is the University of Stuttgart. ... Purdue redirects here. ... Year 1934 (MCMXXXIV) was a common year starting on Monday (link will display full 1934 calendar) of the Gregorian calendar. ... Paul Bonatz (1877-1956) was a German architect, member of the Stuttgart School and professor at the technical university in that city during part of World War II. Bonatz tended to favour a radically simplified neo-Romanesque style, as in his 1927 Stuttgart Railway Station or his 1936 Basel Art... The Cologne Rodenkirchen Bridge is a suspension bridge located in Cologne, Germany. ...

In 1954 he formed the consulting firm Leonhardt und Andrä, and from 1958 to 1974 taught the design of reinforced concrete and prestressed concrete at Stuttgart University. He was President of the University from 1967 to 1969. Year 1954 (MCMLIV) was a common year starting on Friday (link will display full calendar) of the Gregorian calendar. ... Jan. ... Year 1974 (MCMLXXIV) was a common year starting on Tuesday (link will display full calendar) of the 1974 Gregorian calendar. ... Reinforced concrete at Sainte Jeanne dArc Church (Nice, France): architect Jacques Dror, 1926–1933 Reinforced concrete, also called ferroconcrete in some countries, is concrete in which reinforcement bars (rebars) or fibers have been incorporated to strengthen a material that would otherwise be brittle. ... Traditional reinforced concrete is based on the use of steel reinforcement bars, rebar, inside poured concrete. ... Year 1967 (MCMLXVII) was a common year starting on Sunday (link will display full calendar) of the 1967 Gregorian calendar. ... Also: 1969 (number) 1969 (movie) 1969 (Stargate SG-1) episode. ...

He received Honorary Doctorates from six universities, honorary membership of seveal important engineering universites, and won a number of prizes including the Werner-von-Siemens-Ring, the Honorary Medal Emil Mörsch, the Freyssinet Medal of the FIP, and the Gold Medal of the Institution of Structural Engineers. The Werner-von-Siemens-Ring is considered to be among the highest ranking awards for technical sciences in Germany. ... Image:IStructE logo. ...

Throughout his career, Leonhardt was as dedicated to research as to design, and his major contributions to bridge engineering technology included:

• development of a launching system for prestressed concrete bridges, first used in his 1963 bridge over the Caroní River in Ciudad Guayana, Venezuela
• the 'Hi-Am' anchor for cable stays, in collaboration with the Swiss firm B.B.R.V.
• anchorages in prestressed concrete
• experiments during the 1930s on steel orthotropic decks.^[1]

Traditional reinforced concrete is based on the use of steel reinforcement bars, rebar, inside poured concrete. ... The Caroní River is a major river of the Orinoco basin in South America, having its source in South Eastern Venezuela, in the Guiana Highlands. ... Ciudad Guayana is a city in Venezuela. ... Fabricating an orthotropic deck section An orthotropic bridge or orthotropic deck is one whose deck typically comprises a structural steel deck plate stiffened either longitudinally or transversely, or in both directions. ...

Major works

First modern TV Tower in Stuttgart

His major structures include the Cologne-Rodenkirchen Bridge, Stuttgart Television Tower, and various cable-stayed bridges in Düsseldorf. Image File history File linksMetadata Download high-resolution version (946x1840, 223 KB) Originally from German wikipedia. ... Image File history File linksMetadata Download high-resolution version (946x1840, 223 KB) Originally from German wikipedia. ... For other uses, see Stuttgart (disambiguation). ... The Cologne Rodenkirchen Bridge is a suspension bridge located in Cologne, Germany. ... The Fernsehturm Stuttgart (TV Tower Stuttgart) is the worlds first TV tower built from concrete (and prototype for many towers of that kind all over the world). ... Düsseldorf in Germany The Düsseldorf Coat of Arms Düsseldorf is the capital city of the German federal state of North Rhine-Westphalia. ...

He worked on the design of several cable-stayed bridges, including the Pasco-Kennewick bridge (1978) in the USA, and the Helgeland Bridge (1981) in Norway. Wikipedia does not yet have an article with this exact name. ... Ed Hendler Bridge (left) and the old Pasco-Kennewick Bridge (right) The Cable Bridge, officially called the Ed Hendler Bridge, spans the Columbia River between Pasco and Kennewick in southeastern Washington as Washington State Route 397. ... Year 1978 (MCMLXXVIII) was a common year starting on Sunday (link displays the 1978 Gregorian calendar). ... Helgeland Bridge (Helgelandsbrua) is a cable-stayed bridge that crosses Leirfjorden between the mainland and Alsten in Nordland county in Norway. ... Year 1981 (MCMLXXXI) was a common year starting on Thursday (link displays the 1981 Gregorian calendar). ...

Fritz Leonhardt Prize

This prize was established in 1999 on the 90th anniversary of Leonhardt's birth, to recognise outstanding achievements in structural engineering. The first prize was awarded to Michel Virlogeux.^[2] Michel Virlogeux was the chief engineer in the construction of the Millau Viaduct. ...

Bibliography

• Brücken / Bridges (4th edition), Deutsche Verlags-Anstalt, Stuttgart (Germany), ISBN 3-421-02590-8, 1994 (first published 1982).
• Ponts/Puentes, Presses Polytechniques et Universitaires Romandes, Lausanne (Switzerland), ISBN 2-88074-099-1, 1986.

Notes

1. ^ Troyano, Leonardo Fernandez: "Bridge Engineering: A Global Perspective", Thomas Telford Publishing, 2003
2. ^ Saul, Reiner et al: "Eminent Structural Engineer: Fritz Leonhardt (1909-1999)", Structural Engineering International 1/2007

External links

• Fritz Leonhardt information at Structurae
• Bridge Design and Engineering: Fritz Leonhardt, Master of Bridges
• Structures of Leonhardt, Andrä and Partners