Srinivasa “Hal” Iyengar, AISC Lifetime Achievement Award Winner, Dies at 85

Srinivasa "Hal" Iyengar, known for his work on Chicago's John Hancock Center (now known as 875 North Michigan Avenue) and the Sears (now Willis) Tower, passed away last Thursday at the age of 85.

In 2000, AISC presented Iyengar with a Lifetime Achievement Award for his contributions in AISC's and the structural steel industry's success. In addition to the two famous Chicago supertall skyscrapers, Iyengar also had a hand in some of the world's most notable projects such as Bilbao, Spain's Guggenheim Museum, Chicago's Millennium Park, and London's Broadgate.

During his long-running career at Skidmore, Owings & Merrill, Iyengar moved from project engineer to senior structural engineer, eventually becoming a partner and director of structural engineering. During his tenure, he garnered a reputation as a man who often pushed the limits by turning visions of ultra-high structures into reality.

Read more about Iyengar’s phenomenal career and contributions to steel in this May 2000 Modern Steel Construction article.