Seismic Retrofit of Yamanashi Press and Broadcasting Center

Yamanashi Press and Broadcasting Center, designed by Kenzo Tange and completed in 1966, will be reinforced with a base-isolation retrofit constructing method.  The building is supported by 16 circular communication shafts with a diameter of 5 meters.  By installing isolation layers around the bases of the shafts in the basement, the original design and concept of the building will be maintained and the construction will be undertaken without obstructing the activities on the aboveground floors.

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