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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."
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 Hansar
Hansar Rajdamri, Ativa Hotel Bangkok
Building
Completed
2011
hotel / residential
concrete
173 m / 567 ft
43
196
80
298
11
3.5 m/s
46,167 m² / 496,937 ft²
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You must be a CTBUH Member to view this resource.
Proposed
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.
Usually takes on the balance of the architectural effort not executed by the "Design Architect," typically responsible for the construction documents, conforming to local codes, etc. May often be referred to as "Executive," "Associate," or "Local" Architect, however, for consistency CTBUH uses the term "Architect of Record" exclusively.
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.
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 refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
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.
Usually takes on the balance of the architectural effort not executed by the "Design Architect," typically responsible for the construction documents, conforming to local codes, etc. May often be referred to as "Executive," "Associate," or "Local" Architect, however, for consistency CTBUH uses the term "Architect of Record" exclusively.
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.
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.
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.
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.
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
Best Tall Building Asia & Australasia 2011 Award of Excellence
2011 CTBUH Awards
The Hansar Chosen as Featured Building
1 February 2012 - Featured Building
18 September 2014 | Bangkok
Mun Summ Wong of WOHA Architects is interviewed by Chris Bentley during the 2014 CTBUH Shanghai Conference at the Jin Mao Tower. Mun Summ talks...
16 January 2012
Case Study: The Hansar, Bangkok
Mun Summ Wong & Richard Hassell, WOHA
High-rise, high-density living has been embraced as a positive housing solution for many millions of people living in Asia’s growing urban metropolises. The Hansar, a...
The Hansar is located in the heart of Bangkok, surrounded by luxury hotels, shopping areas, and a large city park. The site is small and irregular, with a building plot ratio of 1:10. The design captures the value of the site by maximizing the building area. In Bangkok, living up high provides less noise, less dust, cooler breezes and privacy with full exposure to views. The small site limited the potential green areas on the ground level so sky gardens were introduced at height and are equal to 30% of the site area. These sky gardens are placed at every fifth floor, and are staggered across both the east and west elevations. Each unit has either a private lift lobby with an entry to the sky garden or a living room with sky garden views.
To negotiate between the desire for views and the need to provide shading, a metal mesh screen was utilized. These sun screens also serve as privacy screens for the units. The expanded mesh, which forms the building’s outer skin, is coated in a metallic bronze color to create a contrast to the usually grey Bangkok sky. The bronze screen, when combined with the sky gardens, gives a unique character to the development. The golden mesh and floating greenery allude to the glimpses of gilded temple and luxuriant gardens that hide amongst the concrete jungle of Bangkok.
Tropical living is all about the interaction between the interior and exterior, but in a dense urban site this is challenging. The design looked at ways of creating this tropical lifestyle in a high-density, high-rise development. Landscaping is incorporated in all the common areas throughout the building. Lower level units have private cantilevered gardens. These gardens create a rhythm of green elements which run vertically throughout the whole development. Sky gardens, sky pavilions and green walls have been created all the way up the building to increase the landscape area and interaction between interior and exterior. At the hotel, cantilevered sky pavilions project from the rooms. These are topped with sky gardens, which can be enjoyed by the nearby rooms. Internal light wells are planted with green walls, and give private garden views to every hotel room. The condominium apartments and hotel rooms are all accessed off naturally ventilated and naturally lit corridors, reducing the energy use of the building substantially.
At the podium the ground level consists of retail below six stories of above-ground parking (due to frequent flooding, underground parking is not a good option in Bangkok). Green creeper screens wrap around the car park podium, on top of which sits the cantilevered swimming pool.
Best Tall Building Asia & Australasia 2011 Award of Excellence
2011 CTBUH Awards
18 September 2014 | Bangkok
Mun Summ Wong of WOHA Architects is interviewed by Chris Bentley during the 2014 CTBUH Shanghai Conference at the Jin Mao Tower. Mun Summ talks...
18 September 2014 | Bangkok
Monthly Video: Five Minutes with Mun Summ Wong
Mun Summ Wong of WOHA Architects is interviewed by Chris Bentley during the 2014 CTBUH Shanghai Conference at the Jin Mao Tower. Mun Summ talks...
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