3513
Global
Height rank

Accenture Tower

Chicago
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    Metrics
Height 179.2 m / 588 ft
Floors 42
Official Name
The current legal building name.

Accenture Tower

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

Northwestern Atrium Center, Union Pacific Railroad Station, Ogilvie Transportation Center, Citicorp Center, Citigroup 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

Completion

1987

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

United States

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

Chicago

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.

Office

Height
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."

179.2 m / 588 ft

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).
179.2 m / 588 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).

42

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.

157,934 m² / 1,699,987 ft²

Rankings

#
3513
Tallest in the World
#
61
Tallest in Chicago

Construction Schedule

1984

Construction Start

1987

Completed

2021

Retrofit Start

2022

Retrofit End

Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.

Structural Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.

Retrofit Companies Involved

Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.

Owner
Current
KBS
Occupier/Tenant
Accenture
Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.

Structural Engineer
Design

The Design Engineer is usually involved in the front end design, typically taking the leadership role in the Schematic Design and Design Development, and then a monitoring role through the CD and CA phases.

Other Consultant

Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).

Property Management
Transwestern

Retrofit Companies Involved

Developer
KBS
Architect
Design

Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.

Contractor
Main Contractor

The main contractor is the supervisory contractor of all construction work on a project, management of sub-contractors and vendors, etc. May be referred to as "Construction Manager," however, for consistency CTBUH uses the term "Main Contractor" exclusively.

Leopardo Companies
Other Consultant

Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).

Property Management
Stream Realty Partners

CTBUH Initiatives

Talking Tall: Engineering a Better Future

27 July 2018 - CTBUH Publication

 

Videos

11 June 2013 | Chicago

City-Scapes: Transformations + Interventions

In our journey from Chicago to New York, the United States, South Africa, Europe, the Mideast to Asia/China, the tall building has always been tied...

Research

28 July 2018

Engineering a Better Future

Aine Brazil, Thornton Tomasetti

Aine Brazil, Vice Chairman, Thornton Tomasetti, is the recipient of the 2018 CTBUH Fazlur R. Khan Medal. Through a 40-plus-year career, she has been responsible...

 

Global News

18 May 2021

Chicago Skyscraper Getting a Big Makeover

Accenture Tower in Chicago will undergo a US$22 million renovation, including indoor and outdoor amenities and the addition of 90,000 square feet (8,361 square meters)...

11 June 2013 | Chicago

City-Scapes: Transformations + Interventions

In our journey from Chicago to New York, the United States, South Africa, Europe, the Mideast to Asia/China, the tall building has always been tied...

18 October 2012 | Chicago

Lynn S. Beedle Lifetime Achievement Award: Archi-neering Tall

Never predictable, never simplistic, Helmut Jahn has developed a complex portfolio of iconic buildings around the world. Standout projects include the Sony Center in Berlin,...

18 May 2021

Chicago Skyscraper Getting a Big Makeover

Accenture Tower in Chicago will undergo a US$22 million renovation, including indoor and outdoor amenities and the addition of 90,000 square feet (8,361 square meters)...

15 July 2019

Tech Giant to Expand Into Chicago’s West Loop

Downtown Chicago’s booming tech scene is in for another big jump. Accenture will be expanding into seven floors of the newly named Accenture Tower, bringing...