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Toranomon development, Tokyo, Japan

Friday 22 Apr 2016
 

Tokyo’s towering garden city

 
Toranomon development by ingenhoven architects in Tokyo, Japan
Alexander Schmitz/ingenhoven architects 
 
Toranomon development by ingenhoven architects in Tokyo, Japan Toranomon development by ingenhoven architects in Tokyo, Japan Toranomon development by ingenhoven architects in Tokyo, Japan Toranomon development by ingenhoven architects in Tokyo, Japan
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A new vertical garden city is being created in Tokyo that features the latest sustainable technologies to cut energy use 

In the Toranomon area of Tokyo, a new business and lifestyle precinct is being developed for The Mori Building Corp. Designed by ingenhoven architects, a new office tower (height approx. 185 m) and a residential tower (height approx. 220 m) will be built on both sides of the existing Toranomon Hills Mori Tower (height approx. 250 m). The design of the two new towers respects the taller central tower but they will create their own identity as nodes in the larger green urban network. The residential tower will be Tokyo´s highest residential building.

Lushly planted pedestrian decks fan out from the central tower. The terraced decks create a stepped urban landscape and an area for exchange and movement, bringing the greenery of the surrounding gardens of the historic Atago Shrine up and onto the buildings. The result will be an international hub for businesses, residents and visitors alike, based on ingenhoven architects and Mori Building’s shared urban vision of the “vertical garden city”. Planting on the rooftops helps reduce the urban heat island effect while also enhancing the buildings’ appearance.

Fundamental to the concept for both towers is a shared architectural vocabulary of horizontal ledges. The horizontal ledges help shade the fully glazed façades of the buildings and balance the desire for maximum daylight with the energy performance requirements of a high-performance building envelope.

The terraces and decks provide public spaces and landscaped areas for recreation, activity or relaxation, and seamlessly merge with the horizontal ledges of the upper floors. The horizontal ledges fulfil multiple functions as shading, planters and balconies. The integration of green spaces on multiple levels adds outside spaces, reduces air pollutants and enhances the microclimate. The landscape stimulates the senses with colour, fragrance and sound. Waterfalls will both reflect natural light and enhance the urban soundscape through the sound of moving water.

The decks also allow for an uninterrupted connection between the buildings and the parks in front of the two towers provide generous open spaces to the public. The stepped terrace design allows onlookers to enjoy events as they occur on the levels below, creating a truly multi-layered urban landscape of lush greenery and public space. The façade design plays an important role in the office tower’s overall energy efficiency (the project aims to achieve a CASBEE Class ‘S’ rating); however, other green technologies like a cogeneration system, grey water recycling, high-performance glazing, rainwater harvesting, photovoltaic panels as well as high-efficiency lighting and mechanical equipment are critical in ensuring that the buildings are as green as possible.

Sustainable Buildings Award 2016 is open for entries. For information on entering contact: christina.ingram@builtenvironmentmedia.com +44 (0) 1273 201 123

Nick Myall

News Editor

Key Facts

Client The Mori Building Corp
Status planned
Value (m€)
ingenhoven architects
www.ingenhovenarchitects.com

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