Soundness Survey

Since the second preservation project, in order to better grasp the level of the Dome’s deterioration, a soundness survey has been carried out as a rule once every three years since fiscal year 1992.
Since the first soundness survey, the following aspects have been inspected regularly:

1. Exterior survey – visual inspection of deterioration condition
2. Sinkage measurement - investigation of sinkage condition
3. Vertical measurement - investigation of wall angle
4. Permeability examination - investigation of wall permeability to water
   *Not conducted at the first survey.

Inquiries regarding this site

都市整備局　緑化推進部　公園整備課
Phone:082-504-2393/Fax：082-504-2391
Mail:[email protected]