Guy Nordenson sketches to think.

This article features Guy Nordenson, a structural engineer who began his career drafting in the joint studio of R. Buckminster Fuller and Isamu Noguchi. He established the New York office of Arup in 1987 and his own practice in 1997. After the World Trade Center (WTC) attacks of 9/11, he undertook structural inspections of some 400 buildings around the site and continued to provide his services with the various design deliberations that followed, including collaborating with Skidmore, Owings & Merrill on the scheme that became the Freedom Tower.