How old would Friedrich Achleitner be today?

Friedrich Achleitner was an Austrian poet and architecture critic. As a member of the Wiener Gruppe, he wrote concrete poems and experimental literature. His magnum opus is a multi-volume documentation of 20th-century Austrian architecture. Written over several decades, Achleitner made a personal visit to each building described. He was a professor of the history and theory of architecture at the University of Applied Arts Vienna.