74
Global
Height rank
875 North Michigan Avenue
Chicago United States
Height

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

1
To Tip:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest point of the building, irrespective of material or function of the highest element (i.e., including antennae, flagpoles, signage and other functional-technical equipment).

456.9 m / 1,499 ft
2
Architectural:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

343.7 m / 1,128 ft
3
Occupied:

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.

321.3 m / 1,054 ft
1 2 3 875 North Michigan Avenue Outline
Floors

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

Above Ground

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

100
Height 343.69 m / 1,128 ft
Floors 100
Official Name

The current legal building name.

875 North Michigan Avenue
Other Names

Other names the building has commonly been known as, including former names, common informal names, local names, etc.

Big John, 175 East Delaware Place, John Hancock Center
Type

CTBUH collects data on two major types of tall structures: 'Buildings' and 'Telecommunications / Observation Towers.' A 'Building' is a structure where at least 50% of the height is occupied by usable floor area. A 'Telecommunications / Observation Tower' is a structure where less than 50% of the structure's height is occupied by usable floor area. Only 'Buildings' are eligible for the CTBUH 'Tallest Buildings' lists.

Building
Status
Completed
Architecturally Topped Out
Structurally Topped Out
Under Construction
Proposed
On Hold
Never Completed
Vision
Competition Entry
Canceled
Proposed Renovation
Under Renovation
Renovated
Under Demolition
Demolished
Completed, 1969
Country

The CTBUH follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.

City

The CTBUH follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.

Postal Code
60611
Function

A single-function tall building is defined as one where 85% or more of its usable floor area is dedicated to a single usage. Thus a building with 90% office floor area would be said to be an "office" building, irrespective of other minor functions it may also contain.

A mixed-use tall building contains two or more functions (or uses), where each of the functions occupy a significant proportion of the tower's total space. Support areas such as car parks and mechanical plant space do not constitute mixed-use functions. Functions are denoted on CTBUH "Tallest Building" lists in descending order, e.g., "hotel/office" indicates hotel function above office function.

residential / office
Structural Material

Steel
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from steel. Note that a building of steel construction with a floor system of concrete planks or concrete slab on top of steel beams is still considered a “steel” structure as the concrete elements are not acting as the primary structure.

Reinforced Concrete
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from concrete which has been cast in place and utilizes steel reinforcement bars.

Precast Concrete
Both the main vertical/lateral structural elements and the floor spanning system are constructed from steel reinforced concrete which has been precast as individual components and assembled together on-site.

Mixed-Structure
Utilizes distinct systems (e.g. steel, concrete, timber), one on top of the other. For example, a steel/concrete indicates a steel structural system located on top of a concrete structural system, with the opposite true of concrete/steel.

Composite
A combination of materials (e.g. steel, concrete, timber) are used together in the main structural elements. Examples include buildings which utilize: steel columns with a floor system of reinforced concrete beams; a steel frame system with a concrete core; concrete-encased steel columns; concrete-filled steel tubes; etc. Where known, the CTBUH database breaks out the materials used in a composite building’s core, columns, and floor spanning separately.

steel
Official Website
Height

Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the architectural top of the building, including spires, but not including antennae, signage, flag poles or other functional-technical equipment. This measurement is the most widely utilized and is employed to define the Council on Tall Buildings and Urban Habitat (CTBUH) rankings of the "World's Tallest Buildings."

Architectural
343.69 m / 1,128 ft
To Tip
456.9 m / 1,499 ft
Occupied
321.31 m / 1,054 ft
Observatory
313.81 m / 1,030 ft
Floors Above Ground

The number of floors above ground should include the ground floor level and be the number of main floors above ground, including any significant mezzanine floors and major mechanical plant floors. Mechanical mezzanines should not be included if they have a significantly smaller floor area than the major floors below. Similarly, mechanical penthouses or plant rooms protruding above the general roof area should not be counted. Note: CTBUH floor counts may differ from published accounts, as it is common in some regions of the world for certain floor levels not to be included (e.g., the level 4, 14, 24, etc. in Hong Kong).

100
# of Parking Spaces

Number of Parking Spaces refers to the total number of car parking spaces contained within a particular building.

717
# of Elevators

Number of Elevators refers to the total number of elevator cars (not shafts) contained within a particular building (including public, private and freight elevators).

50
Tower GFA

Tower GFA refers to the total gross floor area within the tower footprint, not including adjoining podiums, connected buildings or other towers within the development.

260,126 m² / 2,799,973 ft²
Rankings
#
74
Tallest in the World
#
12
Tallest in North America
#
12
Tallest in United States
#
5
Tallest in Chicago
#
35
Tallest Mixed-use Building in the World
#
3
Tallest Mixed-use Building in North America
#
3
Tallest Mixed-use Building in United States
#
3
Tallest Mixed-use Building in Chicago
#
7
Tallest Steel Building in the World
#
5
Tallest Steel Building in North America
#
5
Tallest Steel Building in United States
#
3
Tallest Steel Building in Chicago
Construction Schedule
1965

Construction Start

1969

Completed

Owner

Current

Hearn Company; Mount Kellett Capital Management; The Lynd Company

Past

Golub & Company; John Hancock Mutual Life Insurance Co.; Shorenstein Company, LP; Whitehall Street Real Estate Fund
Developer
Jerry Wolman Associates; John Hancock Mutual Life Insurance Co.
Architect
Structural Engineer
Tishman Construction

Property Management

Sudler Property Management

Wind

Alan G. Davenport Wind Engineering Group

Cladding

Cupples

Elevator

Otis Elevator Company

Fire Proofing

Grace Construction Products

Sealants

Dow Corning Corporation

Steel

American Bridge Company; Arbed

Videos

07 November 2013 | Chicago

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Interview: Fazlur Khan Winner: Clyde Baker

Clyde N. Baker, Jr., Fazlur R. Khan Lifetime Achievement Medal Winner, discusses his lifetime work as a geotechnical engineer including working on 7 of the...

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Research

25 June 2020

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Curtain Wall Façades on the New Generation of Supertall Buildings Present and Future Directions


Sae Hwang Oh, Adrian Smith + Gordon Gill Architecture

Beginning in the late 19th century, construction of skyscrapers spread throughout Chicago, New York City, and then the world as demand of space in buildings...

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Global News

29 July 2019 | Chicago

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Elevator Malfunctions Continue in Chicago Skyscraper


A group of people on floor 96 of the former John Hancock Center in Chicago became entrapped on their elevator to the ground floor over...