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The AON Center in Chicago. Left image courtesy Cristoffer Crusell / Flickr.

  • COMPLETION DATE
    2003

Overview

AON Center is an 83-story, landmark, Class-A office tower built in 1972, with more than 2.7 million square feet of net rentable space and a below-grade, 620-car parking garage. Thornton Tomasetti performed a limited due diligence study as part of an evaluation of the building for potential lease or purchase by a third party.

Thornton Tomasetti evaluated the existing condition of the building’s superstructure and foundation systems, as well as the parking garage. The study included a walk-through survey, document review and research, and opinions of probable costs for suggested remedies of the physical deficiencies identified.

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