The tower’s tapered shape was chosen to match the different floor space requirements that decrease from bottom to top - from the entrance and commercial zones at the base to the clusters of small apartments at medium height and finally to the large apartments on top, where relatively less space is needed for ancillary rooms with artificial lighting. Therefore, it was decided to construct a single tower where the offices would be on the lower floors and the apartments on the higher levels. Moreover, the lower-level apartments would have suffered from noise nuisance from the street. But the two towers would have occupied most of the site and would have impaired each other’s privacy and daylight conditions. The wish to continue this mixture initially gave rise to the idea of building a 70-story apartment tower and a 45-story office tower. Known locally as “Big John,” the tower is situated on North Michigan Avenue in a prestigious district with expensive apartments, shops, offices, hotels, restaurants, and art galleries. The building remains an archetype for the collaborative ideal that continues to make SOM a leader in a wide spectrum of design disciplines. – Bruce Graham, Skidmore, Owings and Merrill John Hancock Center Photographs © Dave Burk, Courtesy of SOM © Dave Burk, Courtesy of SOM © Kim Eriksson, Courtesy of SOM © Dave Burk Construction, 1967 Text by the ArchitectsĨ75 North Michigan Avenue, formerly known as John Hancock Center, the world’s first mixed-use tower, is an architectural icon representing the close collaboration between architect Bruce Graham and structural engineer Fazlur Khan. The John Hancock Center is gutsy, masculine, and industrial reflecting the tradition of Chicago, where structure is of the essence. Photographs: © Dave Burk, Flickr Users: © Kim Eriksson, © Ben Schumin, © Scutter Hohn.Topics: Mixed Use, Skyscrapers, Steel Structure.Owner/Developer: Jerry Wolman Associates. ![]() Location: 875 North Michigan Avenue, Chicago, Illinois, USA.Architects 1: Skidmore Owings & Merrill.John Hancock Center Technical Information The building’s structural, programmatic, and architectural innovations combine to create a design that has become a city symbol. Over fifty years after completion, the John Hancock Center, designed by American architecture firm Skidmore Owings & Merrill, has established itself as one of the world’s most recognized skyscrapers and an iconic example of late 20th century Chicago design, construction, and engineering.
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