150 North Riverside
150 North Riverside Plaza is a highrise building in Chicago, Illinois, completed in 2017 and anchored by William Blair and Co. The building is 54 stories tall and was designed by Goettsch Partners. The building occupies a two-acre site on the west bank of the Chicago River, whose size and location demanded an unusually small base for the building. The building features of leasable office space. Due to its unique superstructure design, it encompasses just 25 percent of the lot. In 2019, the building was given the Chicago Chapter of the American Institute of Architects' highest award for design excellence.
Among the building's tenants is the Hyatt Corporation, who moved their headquarters to the building upon its completion.
Background
As required by the city of Chicago for any new riverfront building, the developer was required to set aside part of the lot size for public park space; 75 percent of the project site is reserved for a public park, amphitheater, and riverwalk. The site is built with air rights over tracks that carry Metra and Amtrak trains into Chicago Union Station.The building has achieved LEED gold and WiredScore Platinum certification.
Design
The west side of the building features a lobby with a glass wall that is nearly tall at its peak. The architect's intention is to connect the interior and exterior visually.One signature aspect of 150 North Riverside building is the way the office floors cantilever out from the central core. The building is constructed with a smaller base for a height of 8 stories, and cantilevers out to the full size of the office floor space. This gives it a slenderness ratio of 1:20 at its base.
With its slender profile, the building was designed with a "tuned liquid damper" system. This system consists of two water-filled concrete vaults, located near the top of the skyscraper. As strong winds push up against the face of the building, the water sloshes in the opposite direction. These counteracting forces eliminate any sway that could occur during harsh weather.
Standing 752 ft tall, it is the tallest building in Chicago that is located west of the Chicago River.