Don mentored under Eli Cohen, a structural engineering pioneer who helped forge the Chicago skyline.

In his more than 25 years with Thornton Tomasetti, Donald Hamlin has worked on everything from a one-story addition to the Brookfield Zoo small mammal house in Chicago to the award-winning Great American Tower, the tallest building in Cincinnati. His tenure with the firm has included a broad range of new construction projects, renovations and modifications of commercial, educational, residential and institutional structures. Day to day, he is responsible for structural design, project management and coordination with architects, detailers, contractors and other consultants.

Learning from the Best
Don mentored under Eli Cohen, a structural engineering pioneer who helped forge the Chicago skyline and founded the consulting firm that became the Thornton Tomasetti Chicago office. One of their early projects together was the award-winning, 50-story RR Donnelley Building. Another notable project is the 180,000-square-foot corporate headquarters of retailer Crate & Barrel, just outside of Chicago.

Don is a master at collaborating with colleagues in all disciplines. He has worked on projects with leading architects including Tadao Ando, HOK, David Hovey, Dirk Lohan, Ralph Johnson, Cesar Pelli, Perkins + Will, Kenzo Tange and Rafael Viñoly.

Outside of Work
Don is a music lover. He is a record collector, audiophile and has played drums in various bands since the age of 15.

Expertise
• Technical office standards (typical details and specifications)
• Structural design
• Project management
• Construction administration