Tung-Yen Lin (Chinese: 林同棪; pinyin: Lín Tóngyán; November 14, 1912 – November 15, 2003) was a structural engineer who was the pioneer of standardizing the use of prestressed concrete.Born in Fuzhou, China as the fourth of eleven children, he was raised in Beijing where his father was a justice of the ROC's Supreme Court. He did not begin formal schooling until age 11, and only so because his parents forged his birth year to be 1911 so that he would qualify.

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  • Tung-Yen Lin (Chinese: 林同棪; pinyin: Lín Tóngyán; November 14, 1912 – November 15, 2003) was a structural engineer who was the pioneer of standardizing the use of prestressed concrete.Born in Fuzhou, China as the fourth of eleven children, he was raised in Beijing where his father was a justice of the ROC's Supreme Court. He did not begin formal schooling until age 11, and only so because his parents forged his birth year to be 1911 so that he would qualify. At only 14, entered Jiaotong University's Tangshan Engineering College (now Southwest Jiaotong University), having earned the top score in math and the second best score overall in the college entrance exams for his entering class. He graduated with a bachelor's degree in civil engineering in 1931 and left for the United States, where he earned his master's degree in civil engineering from the University of California, Berkeley in 1933. Lin's master's thesis was the first student thesis published by the American Society of Civil Engineers.[citation needed]Lin returned to China after graduation to work with the Chinese Ministry of Railways. Before too long he earned the reputation of being a “good engineer”. This positioned him to become the chief bridge engineer of the Yunnan-Chongqing Railway and oversaw the design and construction of more than 1,000 bridges. He returned to UC Berkeley to join its faculty in 1946, and began to research and develop the practice of prestressed concrete. He did not invent prestressed concrete, but he did develop it for practical use. The inventor of prestressed concrete is Eugene Freyssinet of France. Lin retired in 1976 to work full-time at T.Y. Lin International, a firm he founded in 1954. After selling that firm, he left it in 1992 to found Lin Tung-Yen China, which oversees engineering projects in China.When Lin received the National Medal of Science from President Ronald Reagan in 1986, he handed over a 16-page plan for a 50-mile (80 km) bridge linking Alaska and Siberia across the Bering Strait, a project he dubbed the Intercontinental Peace Bridge. He also proposed a bridge across the Strait of Gibraltar that would have 16,000-foot (4,900 m) spans and 3,000 feet (910 m) tall towers. Lin was also the first recipient of the A.S.C.E. lifetime achievement in design award, and the society renamed the prestressed concrete award to the T.Y. Lin award.Engineers were often architects in the early 1900s, but by the late '40's, this aspect of engineering had been all but forgotten. Lin was saddened by this situation commenting: But during the last century, particularly in America, we rushed our construction. We have only so much budget to build so many bridges. So we put emphasis on economy. And therefore mass production, et cetera. And almost forgot about aesthetics, in America. Of course, there are beautiful bridges, but in general, engineers didn't think about beauty. Lin fought against the pressures of economy by incorporating more aesthetics into his bridges and developing new techniques that increased economy. Lin believed that "engineering approach should be a global vision of the bridge. To fit the environment and to express the structural forces and moments, and nature itself." Attention had to be paid not only to the details of the bridge, but also to the surrounding landscape. Prestressing the concrete allowed Lin to accomplish the goal of incorporating unique shapes without sacrificing the bottom line.Among his engineering accomplishments were the Moscone Convention Center in San Francisco, the Kuan Du Bridge in Taiwan, and the roof of the National Racetrack in Caracas, Venezuela. He died of a heart attack at age 91. His El Cerrito, California home is the world's first residential structure made of prestressed concrete. His home features a 1,000-square-foot (93 m2) dance floor serving as monument to his favorite pastime, dancing. His widow, Margaret Kao Lin is also the daughter of a former ROC supreme court justice.
  • Tung-Yen Lin (chinesisch 林同棪, Pinyin Lín Tóngyán; * 14. November 1912 in Fuzhou, Republik China; † 15. November 2003 in El Cerrito, Kalifornien) war ein chinesisch-US-amerikanischer Bauingenieur, der im Besonderen für seine Brücken und Spannbetonbauten bekannt war. In der USA leistete er Pionierarbeit im Bereich des Spannbetons. 1986 wurde ihm die National Medal of Science verliehen.Lin war der Sohn eines Richters des obersten Volksgerichtshofes der Volksrepublik China in Peking. Er schloss an der Jiaotong-Universität sein Studium im Bauingenieurwesen 1931 ab und ergänzte dieses mit einem Studium an der University of California in Berkeley, das er 1933 mit dem Master abschloss. Danach konstruierte Tung-Yen in China zahlreiche Brücken, darunter auch Eisenbahnbrücken.1946 war Tung-Yen wieder in Berkeley und forschte auf dem Gebiet des Spannbetons, das damals in den USA noch relativ unbekannt war. Er vereinfachte und standardisierte die Entwurfsmethoden und trug dazu bei, diese Variante des Stahlbetons in den USA populär zu machen. Er war bis zu seiner Emeritierung im Jahre 1976 Professor in Berkeley, wo er der Abteilung Konstruktiver Ingenieurbau vorstand.1954 gründete Tung-Yen das Ingenieurbüro T. Y. Lin International, das er 1987 verkaufte, obwohl er noch bis 1992 mit arbeitete. 1992 gründete er ein neues Ingenieurbüro für Projekte in China, das Lin Tung-Yen China genannt wurde.Zu seinen Projekten zählt das 1962 fertiggestellte Moscone Center in San Francisco, das bei seiner Eröffnung die größte unterirdischen Halle besaß, die Guandu-Brücke in Taiwan und das Tribünendach des La Rinconada Hippodrome, einer Pferderennbahn in Caracas. Das visionäre Brückenprojekte über die Beringstraße, von Tung-Yen als International Peace Bridge bezeichnet, sowie sein Projekt einer Brücke über die Straße von Gibraltar wurden nicht umgesetzt.Tung-Yen war Ehrenmitglied der ASCE, die einen Preis für Spannbeton nach ihm benannte. 1957 half er den ersten Weltkongress für Spannbeton in San Francisco zu organisieren.Tung-Yen heiratete 1941 Margaret Kao, ebenfalls Tochter eines hohen Richters in Peking. Sein Cousin Tung-Hua Lin war ebenfalls ein bekannter Bauingenieur.
  • Tung-Yen Lin (林同炎, pinyin: Lín Tóngyán) (Fuzhou, 14 de novembro de 1912 — 15 de novembro de 2003) foi um engenheiro chinês.
  • 林同炎(1912年12月22日-2003年11月15日)原名林同棪,西方常稱之為T. Y. Lin或Tung-yen Lin,是出生於中國的知名结构工程師。
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  • Tung-Yen Lin (林同炎, pinyin: Lín Tóngyán) (Fuzhou, 14 de novembro de 1912 — 15 de novembro de 2003) foi um engenheiro chinês.
  • 林同炎(1912年12月22日-2003年11月15日)原名林同棪,西方常稱之為T. Y. Lin或Tung-yen Lin,是出生於中國的知名结构工程師。
  • Tung-Yen Lin (Chinese: 林同棪; pinyin: Lín Tóngyán; November 14, 1912 – November 15, 2003) was a structural engineer who was the pioneer of standardizing the use of prestressed concrete.Born in Fuzhou, China as the fourth of eleven children, he was raised in Beijing where his father was a justice of the ROC's Supreme Court. He did not begin formal schooling until age 11, and only so because his parents forged his birth year to be 1911 so that he would qualify.
  • Tung-Yen Lin (chinesisch 林同棪, Pinyin Lín Tóngyán; * 14. November 1912 in Fuzhou, Republik China; † 15. November 2003 in El Cerrito, Kalifornien) war ein chinesisch-US-amerikanischer Bauingenieur, der im Besonderen für seine Brücken und Spannbetonbauten bekannt war. In der USA leistete er Pionierarbeit im Bereich des Spannbetons. 1986 wurde ihm die National Medal of Science verliehen.Lin war der Sohn eines Richters des obersten Volksgerichtshofes der Volksrepublik China in Peking.
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