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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."
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).
Le 1250 Boulevard Rene-Levesque
La Tour IBM-Marathon
Building
Completed
1992
office
concrete
226.5 m / 743 ft
47
900
28
95,237 m² / 1,025,123 ft²
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Construction Start
Completed
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.
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.
You must be a CTBUH Member to view this resource.
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.
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.
Warm Weather Spaces Walking Tours 2015
17 September 2015 - Event
CTBUH Research: Canada Grows Taller
1 December 2012 - CTBUH Research
21 October 2010 | Montreal
Lynn S. Beedle Lifetime Achievement Award: From New York to Shanghai: A Lifetime of Tall
William Pedersen, Partner, Kohn Pedersen Fox Associates. Mr. Pedersen’s approach to design has been one that weds formal and technical originality with a modesty informed...
01 December 2012
CTBUH Research
Twenty-six buildings taller than 150 meters have been built in Canada since 2005 and it added four buildings taller than 200 meters in 2012, the...
17 September 2015
The CTBUH Urban Habitat / Urban Design Committee organized guided walking tours of 16 cities around the globe, focusing on urban habitats around tall buildings.
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