A Milestone In Structural Engineering 🪽
🔎 Point of View: 875 Michigan North Michigan Avenue (formerly John Hancock Center)
The John Hancock Center isn't just important to Chicago; it's important to city skylines across the world. When it was completed 50 years ago, it changed what architects and engineers thought was possible."
The
John Hancock Center is a 100-story, 1,128-foot supertall skyscraper located in Chicago, Illinois. Located in the Magnificent Mile district, the building was officially renamed
875 North Michigan Avenue in 2018.
When the building topped out on May 6, 1968, it was the second-tallest building in the world after the Empire State Building and the tallest in Chicago. It is currently the fifth-tallest building in Chicago and the thirteenth-tallest in the United States, behind the Aon Center in Chicago and ahead of the Comcast Technology Center in Philadelphia.
With its mixed-use program and bold structural design, the former John Hancock Center transformed Chicago's skyline and set the tone for a new era of high-rise construction.
Key Facts: Status: 🟢
Construction Completed - Architectural Style - 📐
Structural Expressionism - Construction started: 1965 - Completed: 1970 - Total Cost: US$100 million/($798 million in 2022 dollars) - Owner: The Hearn Company - Rental Units: 703 - Architectural - Height: 1,128 ft (344 m) - Tip: 1,500 ft (457 m) - Roof: 1,128 ft (344 m) - Top Floor: 1,054 ft (321 m) - Observatory: 1,030 ft (314 m) - Floor Count: 100 - Floor Area: 2,799,973 sq ft (260,126 m2) - Lifts/elevator: 50, made by Otis Elevator Company. Expertise Commercial, Mixed Use, Residential, Structural Engineering - 📡 Antennas: 2 (Mismatched Tower Antennas) Transmitting signals from numerous radio and TV stations that rent space on the towers. ⚡️
Address: 875 North Michigan Avenue (additional entrances at 175 East Delaware Place and 170 East Chestnut Street)
🫗 Design and Construction ⛓️
🫧 Owner: The Hearn Company
"Building Success since 1974"
🛠️ Architect (s): Bruce Graham & Fazlur Rahman Khan - Skidmore, Owings and Merrill
(SOM)
⚙️ Developer: John Hancock Insurance
🏙️ Structural Engineer: Skidmore, Owings & Merrill LLP
(SOM)
📡 Main Contractor: Tishman Construction Co.
"Developing Tomorrow's Ideas Today"
John Hancock Center - 360 Chicago (A Magnicity Experience) - A Magnicity Brand - © 2023, All Rights Reserved.