Sumitomo Forestry Co., Ltd, a member of the Sumitomo Group, has big plans to celebrate the Group’s 350th anniversary in the year 2041: a 350-meter wooden tower that comprises retail, office, hotel, and residential space. The Tokyo-based tower would become Japan’s tallest building and the tallest wooden skyscraper in the world.
The overall goal of the high-rise, dubbed W350, is to help realize an environmentally conscious city of wooden buildings that would transform Tokyo into a “forest.” Sumitomo describes the tower as “a living place of living things.”
Courtesy of Sumitomo.
The mixed-use building, which is being designed in collaboration with Japanese architecture firm Nikken Sekkei, will be a wood and steel hybrid that consists of 90% wood. The interior will be made entirely of wood. It is designed to rise 70 stories and 350 meters (1148 feet) into the Tokyo sky. The total floor area will be approximately 455,000 sm and will use 185,000 cubic meters of wood. The company says using this amount of wood would have a two-pronged effect: it will equip the tower to remove about 100,000 tons of carbon dioxide from the air and will also be a catalyst to encourage reforestation.
The tower is designed with a braced tube structure. This system forms a cylindrical shell with columns/beams and braces. The braces are placed diagonally in a set of shafts assembled with columns and beams to prevent the building from deforming against lateral forces like earthquakes and wind. Balconies will wrap the exterior of the building to provide fresh air, nature, and sunlight.
Courtesy of Sumitomo.
W350’s cost is estimated at 600 billion yen, or $5.6 billion. For comparison, One World Trade Center cost $3.6 billion. Sumitomo says the cost of the wooden tower is almost twice that of conventionally constructed high-rise buildings. In order to bring those costs down, the company is accelerating its research and technology development in an attempt to increase the construction and economic feasibility of the project.
Courtesy of Sumitomo.
The current tallest wooden building in the world is the Brock Commons on the University of British Columbia campus. The building stands 53 meters, almost 300 meters shorter than the planned W350.
Japanese architecture firm Nikken Sekkei is helping to design the tower.
Courtesy of Sumitomo.
Related Stories
Codes and Standards | Jul 10, 2017
New mass plywood panel project moves ahead with federal grant
New material is substitute for concrete and steel in multi-story projects.
Wood | Jul 10, 2017
University of Idaho Arena plans to make timber a focal point
The project received a Wood Innovation Grant that will help spur construction of the Hastings + Chivetta-designed project.
Wood | Jun 13, 2017
The first timber high-rise in the U.S. set for construction in Portland
The building’s design, building materials, and commercial tenants are all focused on the key aspect of sustainability.
| Jun 13, 2017
Accelerate Live! talk: Next-gen materials for the built environment, Blaine Brownell, Transmaterial
Architect and materials guru Blaine Brownell reveals emerging trends and applications that are transforming the technological capacity, environmental performance, and design potential of architecture.
Wood | Jun 6, 2017
Shigeru Ban-designed residential structure poised to become world’s tallest hybrid timber building
The wood, concrete, and glass building will rise approximately 233 feet when finished.
| Jun 5, 2017
Fire-rated frames deliver the natural look of wood
The TimberLine Series pairs a high-strength steel subframe with a wood-veneered metal cover cap to produce a slender fire-rated frame.
Multifamily Housing | May 17, 2017
Swedish Tower’s 15th floor is reserved for a panoramic garden
C.F. Møller’s design was selected as the winner of a competition organized by Riksbyggen in Västerås.
Sponsored | Ceilings | Apr 4, 2017
Wood ceilings and walls help convey energy of college football
Real wood veneer panels evoke warmth, texture, and color of a football.
Sustainability | Apr 4, 2017
Six connected CLT towers create an urban forest in India
The mixed-use towers would each rise 36 stories into the sky and connect via rooftop skybridges.
Wood | Mar 16, 2017
Wood wall system delivers that rich, natural look
The use of Douglas fir glulam beams can obviate the need for steel beams, even for walls up to 14 feet in height.