Donald Friedman, a structural engineer, is the president of Old Structures Engineering and lives in New York City. He is the author of Historical Building Construction; After 9-11: An Engineer s Work at the World Trade Center; The Investigation of Buildings; The Design of Renovations, with Nathaniel Oppenheimer; and Building the Empire State with Carol Willis.
Skip back to main navigation
Participating Programs
How Masonry Construction Transitioned to Steel, 1870s-1890s
Rewriting Skyscraper History: Looking Back from the 21st Century
The Structure of Skyscrapers in America 1871-1900: Their History and Preservation
Re-framing the Debate Over the “First Skyscrapers” Tall Building Construction in New York vs. Chicago, 1883-1900
