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
High-rise Construction | Feb 8, 2019
Dubai’s newest supertall will be covered in digital displays
SOM designed the tower.
High-rise Construction | Jan 18, 2019
‘Paramount’ will become Nashville’s tallest tower
Goettsch Partners is the project’s architect.
High-rise Construction | Jan 14, 2019
AS+GG-designed tower will be the tallest in China
The tower is at the center of the Shimao Longgang Master Plan.
High-rise Construction | Jan 10, 2019
Indoor-outdoor amenities open leasing value at a San Francisco skyscraper
The amenities that set this 605-foot-tall building apart are its 50,000 sf of outdoor and open spaces that include 14 skydecks and large terraces on its 12th and 28th floors.
High-rise Construction | Dec 13, 2018
Record number of 'supertall' towers were completed in 2018
Citic Tower in Beijing and Vincom Landmark 81 in Ho Chi Minh City are among 18 "supertall" skyscrapers completed this year—a record number, according to the Council on Tall Buildings and Urban Habitat.
High-rise Construction | Aug 27, 2018
The world’s tallest buildings with dampers
The CTBUH created the list as part of a recent study.
High-rise Construction | Aug 8, 2018
Bjarke Ingels Group’s new Shenzhen tower includes a folded building envelope
The new skyscraper is the home of Shenzhen Energy Company.
Multifamily Housing | Aug 7, 2018
Even after redevelopment, the iconic 'Chicago Tribune' sign will remain at 435 N. Michigan Ave.
The newspaper and the building's new owners reached a settlement.
Lighting | Aug 1, 2018
Willis Tower upgrades antenna lighting
The new lights will save Willis Tower more than 70% in antenna-lighting energy costs.
High-rise Construction | Jul 31, 2018
A 350-foot waterfall splashes down from a skyscraper in China
The tower is located in Guiyang’s central business district.