Tokyo Midtown Residences > Disaster Prevention
The 4 residential towers are built on a single giant foundation that measures 230m on each side and is solidly supported on a stratum with a penetration resistance value (“N” Value) exceeding 50.
The dual power reception approach is supplied by power supply lines in a loop configuration. If the primary supply line suffers a problem, the auxiliary line is ready to supply uninterrupted power.
Featuring high-strength pillars, walls and other structural elements, the entire building boasts a structure that is highly resistant to shaking. In addition, the adoption of buckling-restrained tube-in-tube energy dissipative braces and other advanced seismic engineering technologies prevent damage to the major structural framework of the building.
In the event of the inability of Tokyo Electric Power Company to supply power, a backup power generation system is ready to supply sufficient electric power for the needs of common areas and disaster response facilities. Emergency power can be supplied for approximately 72 hours.
※The quantity of water that can be supplied will vary depending on the amount consumed for fire-fighting activities.
The earthquake early warning alarm will go off in the entire building when an earthquake of intensity 4 and over is forecast by the Japan Meteorological Agency.
Even if the city water supply is interrupted due to an earthquake or other disaster, reserve water will be available in the receiving storage tank.
※The quantity of water that can be supplied will vary depending on the amount consumed for fire-fighting activities.
The Building diagnostic system was introduced and commenced operations in March 2010. When an earthquake strikes, seismometers and other equipment installed in the building collect and analyze various data related to building vibrations. Building management is able to make a more accurate assessment of the degree of damage than is possible with only a visual inspection, and then use this information to determine whether and where severe damage has occurred and whether there is a need to evacuate the building.
In the Disaster Center located on 1F, experienced security personnel are on duty around the clock. In addition to conducting regular patrols, security staff are ready to swiftly respond to disasters or any trouble.
The elevator will stop at the closest floor when the Earthquake Early Warning System alarm goes off.
This will protect people from being trapped inside and prevent elevator wires from becoming entangled.
The Yodobashi Terrace is bordered by the Kanda River in the north and the Meguro River in the south. It is part of the Musashino Upland and is historically known to be stable. Tokyo Midtown is constructed on a site in this area.
According to the Tokyo Metropolitan Government’s comprehensive assessment of earthquake area vulnerability, “Akasaka 9-Chome”, where the Tokyo Midtown Residences are located, is recognized as a “Safe Area” with a low risk of building collapse and fire. In addition, all of Minato Ward has been designated a “Stay-in” area, which means that residents are advised to “stay in” this area where there is low risk of fire spread and there is no need to seek shelter at one of the wide area evacuation sites.