De Karel Doorman

Rotterdam
Height 70.5 m / 231 ft
Floors 22
Official Name
The current legal building name.

De Karel Doorman

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

Linea Nova, Ter Meulen

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

2012

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.

Rotterdam

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 / Retail

Structural Material
All-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 an “all-steel” structure as the concrete elements are not acting as the primary structure.

All-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 and/or steel reinforced concrete which has been precast as individual components and assembled together on-site.

All-Timber
Both the main vertical/lateral structural elements and the floor spanning systems are constructed from timber. An all-timber structure may include the use of localized non-timber connections between timber elements. Note that a building of timber construction with a floor system of concrete planks or concrete slab on top of timber beams is still considered an “all-timber” structure as the concrete elements are not acting as the primary structure.

Mixed-Structure
Utilizes distinct systems (e.g. all-steel, all-concrete, all-timber), one on top of the other. For example, a Steel Over Concrete indicates an all-steel structural system located on top of an all-concrete structural system, with the opposite true of Concrete Over 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 within a composite building’s primary structural elements.

Concrete-Steel-Timber Composite Over Concrete

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."

70.5 m / 231 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).
71.2 m / 234 ft
Occupied
Height is measured from the level of the lowest, significant, open-air, pedestrian entrance to the highest occupied floor within the building.
66.1 m / 217 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).

22

Floors Below Ground
The number of floors below ground should include all major floors located below the ground floor level.

1

# of Apartments
Number of Apartments refers to the total number of residential units (including both rental units and condominiums) contained within a particular building.

114

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

156

# 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).

8

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.

26,950 m² / 290,087 ft²

Structural Material Concrete-Steel-Timber Composite Over Concrete
Structural Details:
Floors 1 – 6
Columns
Reinforced Concrete
Core
Reinforced Concrete
Floors 7 – 22
Columns
Steel
Core
Reinforced Concrete
Floor Spanning
Laminated Timber Floorplate
Floor Spanning
Steel Beam

Construction Schedule

2006

Construction Start

2012

Completed

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.

Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).

Aluminium
Formwork
Owner
ASR Nederland N.V.
Developer
DW Nieuwbouw; WM Projectontwikkeling
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.

Ibelings Van Tilburg Architecten
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.

MEP Engineer
Engineer of Record

The Engineer of Record takes the balance of the engineering effort not executed by the “Design Engineer,” typically responsible for construction documents, conforming to local codes, etc.

Wichers en Dreef
Project Manager

The CTBUH lists a project manager when a specific firm has been commissioned to oversee this aspect of a tall building’s design/construction. When the project management efforts are handled by the developer, main contract, or architect, this field will be omitted.

Objectum
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.

Van Wijnen
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).

Acoustics
Peutz
Fire
Peutz
Material Supplier

Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).

Aluminium
Cladding
Gras Houtproducten
Fire Suppression
Fire Resistant
Formwork
Steel
Oostingh Staalbouw
Structural Timber
Forger Houtconstructies; Heko Spanten

CTBUH Awards & Distinctions

10 Year Award 2022 Winner

2022 CTBUH Awards

 

CTBUH Initiatives

Tall Timber: A Global Audit

26 June 2017 - CTBUH Research

Considering the Whole Life Cycle Workshop, Shanghai 2014

16 September 2014 - Event

 

Videos

24 May 2022 | Rotterdam

De Karel Doorman, Rotterdam: An Ultra-Lightweight Vertical Extension Using Steel Beams & Stud Walls

This project adds 16 residential floors on top of an existing 1951 department store. The system is a combination of steel columns and beams, metal...

Research

23 May 2022

Interactive Study - The State of Tall Timber: A Global Audit

CTBUH Research

This data study represents the significant recent momentum of the mass-timber movement worldwide. There are now 139 mass timber buildings around the world of eight...

About De Karel Doorman

De Karel Doorman was constructed on top of the Ter Meulen store, originally built in 1948. To construct the additional floors, a lightweight alternative to traditional multistory framing was approached. The building utilizes two reinforced concrete cores inserted into the existing structure, a framework of steel columns and beams, a wooden floor system topped with 55mm of concrete and a wooden exterior wall clad with a glass facade. The resulting structure's floors weigh 250 kilograms per square meter, one fifth of the weight of a standard high-rise apartment building constructed entirely of reinforced concrete.

CTBUH Awards & Distinctions

10 Year Award 2022 Winner

2022 CTBUH Awards

24 May 2022 | Rotterdam

De Karel Doorman, Rotterdam: An Ultra-Lightweight Vertical Extension Using Steel Beams & Stud Walls

This project adds 16 residential floors on top of an existing 1951 department store. The system is a combination of steel columns and beams, metal...

16 September 2014 | Rotterdam

Ultra Light Weight Solutions for Sustainable Urban Densification

This presentation shows, through the realized case project “De Karel Doorman” in Rotterdam, how ultra lightweight solutions for apartments and other building types can be...

23 May 2022

Interactive Study - The State of Tall Timber: A Global Audit

CTBUH Research

This data study represents the significant recent momentum of the mass-timber movement worldwide. There are now 139 mass timber buildings around the world of eight...

04 April 2022

State of Tall Timber 2022

Daniel Safarik, Jacob Elbrecht & William Miranda, CTBUH

The past few years have seen tremendous interest in the development of mass timber buildings of increasing height, in urban settings, many of which are...

30 October 2017

Rethinking CTBUH Height Criteria In the Context of Tall Timber

Robert M. Foster, University of Queensland; Michael H. Ramage, University of Cambridge; Thomas Reynolds, The University of Edinburgh

Recent developments in the design and construction of progressively taller buildings using engineered timber as a structural material raise important questions about the language that...

16 September 2014

Ultra Light Weight Solutions for Sustainable Urban Densification

Maurice Hermens, Michiel Visscher & John Kraus, Royal HaskoningDHV

This paper shows, through the realized case project “De Karel Doorman” in Rotterdam, how ultra lightweight solutions for apartments and other building types can be...

26 June 2017

Tall Timber: A Global Audit

The CTBUH has produced its latest Tall Buildings in Numbers research study, entitled "Tall Timber: A Global Audit."

16 September 2014

Considering the Whole Life Cycle Workshop, Shanghai 2014

This session brought building environmental performance issues to the forefront in building design, a field that has been criticized in the past for its resource-heavy construction.