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  • Writer's pictureAdam German

Nine story partial wood frame office building in Tameike Sanno released by Nomura Real Estate

On November 21st, Nomura Real Estate unveiled to the media the Nomura Real Estate Tameike Sanno Building located in Minato-ku, Tokyo.

 
Key Takeaways:

  • The building's structure integrates steel frame with wood frame portions, reducing CO2 emissions compared to reinforced concrete construction and providing fire-resistant wooden floors.


  • Office spaces offer flexible layouts, utilizing wooden elements to minimize tenant partitioning interference and restoration costs.


  • The entrance boasts Japanese cedar louvers, greenery, and a tenant-exclusive lounge with fire-resistant wooden ceilings.


  • Prior to completion, the entire building secured a lease agreement, underscoring significant tenant interest.

 

Situated a 4-minute walk from Tokyo Metro Ginza Line's Tameike Sanno station and a 6-minute walk from Toranomon station, Nomura’s building stands nine floors above ground with one below, and was built with combined steel and wood framing. 


Brown indicates wood sections, light gray indicates steel and dark gray indicates concrete foundation, courtesy of Nomura Real Estate.


The total floor area spans 5,594.97 square meters, with a standard floor area of 535.86 square meters.


This wood used in the framing utilizes 470 cubic meters of timber, achieving a reduction of approximately 125 tons in CO2 emissions during construction and solidifies the fixation of approximately 285 tons of CO2 absorbed during the growth stage of the timber used.


The timber used for floors 2 to 5 provides a fire resistance of 2 hours, while floors 6 and above offer 1 hour of fire resistance. The combination of builder Shimizu Corporation's proprietary technology with steel frames ensures seismic resistance and construction feasibility while creating wooden spaces.


The exterior features exposed wood frames, treated with highly weather-resistant clear coating on wooden lattice sections covered with glass casings, ensuring long-term aesthetic preservation.


Courtesy of R.E. Port News.


Regarding the interior office floors, a hybrid structural design capitalizes on the characteristics of both steel and wooden frames, offering pillar-free wooden office spaces measuring 21 meters by 18 meters with a ceiling height of 2.6 meters under the support beams.


Realized 21m x 18m pillar-free office interior space courtesy of Nomura Real Estate. 


By incorporating structural timber in the ceilings and beams, tenant partition work interference and high costs for restoration work during lease expiration are minimized when compared to traditional interiors offered by reinforced concrete buildings.. 


Innovative measures include embedding artificial wood beneath the Cross Laminated Timber (CLT) surface to enable partitioning without cutting the timber itself. 


Additionally, the adoption of floor air conditioning vents and easily attachable/detachable lighting enhances layout flexibility.


Prior to completion, the entire building has secured a lease agreement by one tenant, indicating high tenant demand in response to the eco-friendly nature of the structure.


Source:

R.E. Port News (Japanese only)


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