Tung-Yen Lin, a visionary civil engineer known as the pioneer of standardizing use of prestressed concrete and post-tensioned slabs, died Nov. 15 of natural causes in El Cerrito, Calif. He was 91.
Born in Fuzhou, China, Lin earned the moniker "Mr. Prestressed Concrete" for introducing to the U.S. in the 1950s the idea of strengthening concrete by prestressing it with steel cables.