Rijkskantoren Westraven

Utrecht

This project was renovated in 2008 and replaced by Rijkswaterstaat Westraven

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    Metrics
Height 85.1 m / 279 ft
Floors 23
Official Name
The current legal building name.

Rijkskantoren Westraven

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

1977

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

Netherlands

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

Utrecht

Address

Griffioenlaan 2

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."

85.1 m / 279 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).

23

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.
Lucas & Niemeijer

About Rijkskantoren Westraven

The Westraven Office Complex in Utrecht, the Netherlands, is a combination of a renovated existing building and a new extension for the use of several divisions of the Dutch Department of Public Works. The program includes office space, conference facilities, a national meeting center, a communications center, and a "future center" named LEF for the Department of Public Works. This existing 85-meter (279-foot) tall construction has been radically renovated and reorganized, and a stretched out four-story podium has been designed around the base of the building. See Project Case Study