Edgar Cardoso

Edgar Cardoso (11 May 1913, Resende – 5 July 2000, Porto) was a noted Portuguese civil engineer and university professor. In Portugal, Edgar Cardoso was a pioneer of experimental analysis of structures and of high precision instruments developed to measure parameters affecting structural behavior on small models of his own works.

Cardoso was born in Resende and studied civil engineering at the University of Porto, in Porto, where he graduated in 1937. On 5 August 1935 Edgar Cardoso received a guideline to carry out a first period of training at the Port of Leixões to study the engineering works being carried out at the Port under the authority of the engineer Gervásio Leite. Cardoso's report was presented at the university on 23 October to high acclaim and given a grade of 16 points (out of 20) by the professors Teotónio Rodrigues and Antão de Almeida Garrett. Edgar Cardoso carried out at least one other period of training in Bragança in the JAE (national authority for Portuguese roads) already in 1937, the year he graduated in civil engineering from the Faculdade de Engenharia da Universidade do Porto. Another notable academic document from his student years was the report of a practical exercise that consisted of the full calculation of a swimming pool.

On 21 December 1954, Edgar Cardoso began his university teaching career in bridge building at the Instituto Superior Técnico (IST), a well known Portuguese school of engineering, which belongs to the Technical University of Lisbon. He became a noted professor for many generations of civil engineers who graduated from IST.

Among the bridges that he designed is the Mosteirô bridge, a continuous truss frame beam, and the S.João railway bridge, a continuous structure one thousand metres in length. He made portico-shaped bridges and suspended bridges over the Zambezi River and Save River in Mozambique, and trussed beam bridges, over the Mondego river in Figueira da Foz, over the Kwanza river in Angola, over the Limpopo river in Xai-Xai, and in Macau. His big span concrete arcs, as on the Arrábida bridge (Porto), and in re-reinforced concrete porticos, as on the S. João railway bridge, achieved world records for that time. Since trussed beam bridges, as the Figueira da Foz bridge, the first Portuguese trussed beams bridge, until suspended bridges without rigidity beam, stabilized by the suspended cable and the inclination of kingpost whole rigidity, as in Zambeze bridge, Edgar Cardoso branded by the difference the structures engineering evolution. The Macau Taipa bridge was a challenge because of its provoctive shape, a convex superstructure. Exceptionally large sizes were a characteristic of his last inventions, such as the S. João bridge and the Funchal airport runway extension.

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