5 December 2018 - Awards
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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."
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).
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."
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
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).
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).
The number of floors below ground should include all major floors located below the ground floor level.
The current legal building name.
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.
The CTBUH follows the United Nations's definition of Country, and thus uses the lists and codes established by that organization.
The CTBUH follows the United Nations's definition of City, and thus uses the lists and codes established by that organization.
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.
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.
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."
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).
The number of floors below ground should include all major floors located below the ground floor level.
Number of Parking Spaces refers to the total number of car parking spaces contained within a particular building.
Number of Elevators refers to the total number of elevator cars (not shafts) contained within a particular building (including public, private and freight elevators).
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.
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Civil
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Acoustics
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Vertical Transportation
Wind
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2019 CTBUH Awards
2018 CTBUH Awards
5 December 2018 - Awards
19 November 2018 - CTBUH News
19 November 2018 | Chicago
James Goettsch is the Chairman and Co-CEO of Goettsch Partners as well as the firm's design director, responsible for developing the firm's design talent and...
26 October 2015
At the turn of the century, building design began to evolve. Improvements included indoor plumbing, the advent of escalators, and creation of the “Chicago window.”...
The 150 North Riverside site is located prominently at the confluence of the three branches of the Chicago River and less than one block away from one of Chicago's busiest commuter train stations. With exposed railroad tracks on the west side of the site and the city requirement for a public right-of-way on the east side, the remaining area on which to build was considered impossibly narrow, and the site sat undeveloped for decades.
Utilizing a unique core-supported structure with a very small footprint at grade, the design resolves the site challenges and provides a Class A office tower with efficient, column-free floor plates. The building’s unusual core-supported design results in a 221-meter tower resting atop a base that is merely 12 meters wide. The building is most noticeably significant for the narrow aspect ratio of its core; at 20:1 it is among the world’s thinnest. In consideration of this, the building also contains the first-ever application of a 12-tank tuned liquid mass damper (TLMD) at the tower’s top to manage both building drift and acceleration. With a total of 605,665 liters of water, the TLMD also provides city-approved fire protection storage tanks to supply the building’s sprinkler system, a creative dual purpose that is a Chicago first. The 16 sloping columns at the cantilevers feature the largest rolled-steel shapes ever used in a high-rise building in the U.S. The shapes are 1,092 millimeters deep and weigh 1,377 kilograms per meter.
This narrow building footprint accomplishes several strategic goals, in addition to facilitating column-free office space. It also creates a dramatic interior space in the lobby, while allowing for more than 75 percent of the property to be unenclosed outdoor space. The tower’s limited footprint and the angled sweep of its underside appear to usher the river past the site, breaking down the tower’s considerable mass and presenting a balanced composition.
Tenants and visitors enter through a dramatic, 27-meter-high lobby enclosed by a glass-fin wall hung from the structure above. The lobby features the “150 Media Stream,” a one-of-a-kind curated multimedia wall that showcases the work of local and other digital artists. The 46-meter-long, site-specific installation provides a lobby focal point while also addressing the transition between the opaque wall over the parking deck and the glass-fin wall above, using 89 LED blades, carefully choreographed in varying lengths and widths.
Building amenity spaces include a restaurant, bar, fitness center and conference center – all with water views. The condensed lobby and elevator cores open the majority of the 8,093-square-meter site as a landscaped public park, plaza and riverfront promenade.
Outside, the park and plaza provide more than 300 linear meters of seating, multiple assembly/event spaces and 110 meters of at-grade Riverwalk frontage, which has already become one of the most populated walkways for downtown commuters. Those who negotiate the grade change of the landscaped plaza on the west side of the tower find themselves in the unique position of being outdoors and at eye level with Chicago’s famous elevated train, without being in a station.
The structural acrobatics performance has paid off commercially as well as urbanistically, taking what was once deemed an unbuildable site and creating an optimal mix of leasable floor space, public outdoor space, and semi-public indoor space, complemented by custom-designed artwork.
2019 CTBUH Awards
2018 CTBUH Awards
19 November 2018 | Chicago
James Goettsch is the Chairman and Co-CEO of Goettsch Partners as well as the firm's design director, responsible for developing the firm's design talent and...
30 May 2018 | Chicago
The 150 North Riverside site is located prominently at the confluence of the three branches of the Chicago River and less than one block away...
03 November 2016 | Chicago
As Chairman and CEO of Magnusson Klemencic Associates, Ron Klemencic has played an active role in shaping the direction of the structural engineering community. His...
26 October 2015 | Chicago
In urban centers dominated by tall buildings, access to outdoor space is important. We will explain how two urban office building developments provide valuable outdoor...
26 October 2015
At the turn of the century, building design began to evolve. Improvements included indoor plumbing, the advent of escalators, and creation of the “Chicago window.”...
26 October 2015
In urban centers dominated by tall buildings, access to outdoor space is important. We will explain how two urban office building developments provide valuable outdoor...
5 December 2018
These projects will be represented at the CTBUH 2019 Tall + Urban Innovation Conference, where they will compete in real time for winning distinctions in each category.
19 November 2018
James Goettsh, Goettsch Partners, and Anthony Scacco, Riverside Investment & Development, sat down with CTBUH to discuss the drivers and challenges behind 150 North Riverside.
22 August 2018
CTBUH has released a Tall Buildings in Numbers (TBIN) interactive data study on the world's tallest buildings with dampers.
16 December 2016
As an annual tradition, CTBUH HQ staff are given a tour of tall building during their holiday celebrations. This year, the staff visited 150 North Riverside by Goettsch Partners.
30 October 2015
CTBUH 2015 delegates toured Chicago and its architectural marvels. From recently constructed skyscrapers to the modern marvel of Willis Tower, which held the tallest title for 25 years.
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