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The John Hancock Center |
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Stephanie Harris &
Holly Pope
Honors Geometry
Ms. Wamser's 2nd Hour |
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The John Hancock Center was designed by architect Bruce Graham. Mr. Graham is also well known for designing the Sears Tower and First Wisconsin Plaza. The Hancock Tower was constructed in 1970 in Chicago, IL. It stands 100 stories tall and is located on North Michigan Avenue. To local Chicagoans it is known as "Big John." It is used as a multi-purpose building including 48 stories if apartments (711 apartments total), 29 office stories, shops, a hotel, a swimming pool, an ice rink, a restaurant, and televison and radio facilities. The apartments, located at the top of the tower, are so high that inhabitants have to call someone on a lower level to find out what the weather is like because they are above the clouds.
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Links: |
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U.S. Map: Find Chicago, IL |
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Map To Hancock Tower |
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Views from Hancock Observatory |
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Chicago City Diagram |
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Pictures from the
scaffolding collapse |
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Style and Design: |
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The Hancock Tower is of modern design. The large, bracing criss-crosses on each side of the building demonstrate its new design and modern architecture. They are used not only for support but also to give the building its unique look. The building was created using the "steel tube system" designed by engineer Fazlur Kahn. This new system allows buildings to withstand great winds by absorbing the forces using all three dimensions of the building. The diagonals (criss-crosses) are connected to the exterior columns, allowing forces to be carried over the diagonals to the the columns and back. This new system also allows for the use of 50% less steel than in other skyscrapers with interior columns. |
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Click here to link to Greatbuildings.com!!! |
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Fast Fact!!
The Hancock
Center is Building of the Month!! |
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Architectural Details: |
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The structural system is composed of spandrel beams, columns, and diagonal cross-braces. It boasts a tapered design, creating a 50,000 square foot base and a 16,000 square foot summit. Approximately $2.5 million was spent on purchasing air-locks, energy management computers, and a variable air-system in order to deter a potential energy-wasting situation. The building includes parking garages on the base level to radio towers on the upper levels. The main building materials are steel, aluminum, and glass. The body-length windows were created using bronze-tinted glass. The foundation is a pile foundation. The height at its tip is 450m or 1,476ft. By the end of construction, the building cost totaled to $95,000,000. |
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Mathematical Facts: |
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- The building weighs 384 million pounds!!
- Its gross floor area is 260, 126 square meters or 2,799,996 square feet.
- Its height at the roof is 344m or 1,127ft.
- It took 4 years to build, from 1965 to 1969.
- It has a total of 50 elevators and 750 parking spaces.
- It has 100 multi-use floors. |
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Fast Fact!!
The Hancock Center is the 12th tallest building in the world!! |
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Interesting Story!! |
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On April 18, 2002, the City of Chicago filed a lawsuit against the owner of the John Hancock Center. The city's claim stated that the buildings contractors were responsible for the 3 deaths and 8 injuries that occured when the scaffolding fell from the 42nd floor of the building to the streets below. Chicago is asking for $150,000 in reimbursement for the costs involved in cleaning the mess from Chestnut Street below. The city is also fining the building for 100 alleged building code violations that were discovered in the city's investigation after the incident. These fines could reach up to $2,500 per day. The violations deal mainly with issues with the buildings windows. The city is now considering issuing new standards regarding scaffolding. |
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Click here to link to
free pictures of skyscrapers!! |
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Webpage created by:
Stephanie Harris
Ms. Wamser's
Honors Geometry Class
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