To ensure that residents can be confident of safety, the Chikusa Tower Hills is built using a combination of advanced construction techniques, including high-strength concrete, which is up to twice as strong as regular concrete. As a result, its structural framework will not collapse or crumble even during an earthquake of level 6 on the Japanese scale. Its earthquake resistance and durability will protect the lives and property of residents even in the rare event of a major disaster.
The structure uses Shimizu ready-mixed high-strength concrete for increased earthquake resistance and durability. In comparison with regular concrete its load-bearing strength is up to twice as great, ensuring that it will not collapse even if a maximum load of around 4,800 tons is applied to a 1-m2area. *Excluding pillars.
To support the high-rise condominium structure, the piles driven into the supporting foundations use expanded-resistance technology, giving them wider ends. Driving 25 expanded-resistance piles with a diameter of about 2.0 m into robust foundations combines both foundations and building into a single structure, which combined with use of the cast-in-place concrete pile construction method increases the strength of the buildings.
The building is built not to collapse or crumble even during the size of major earthquake that occurs only once in several hundred years. It has the same level of earthquake resistance as public facilities designated as evacuation centers, such as schools and police stations.
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The Chikusa Tower Hills has received a Housing Performance Evaluation on the basis of an inspection carried out according to common standards by a third-party institution (a Designated Evaluation Body for Housing Performance) designated by the Ministry of Land, Infrastructure, and Transport . The project was issued a Design-Stage Performance Evaluation at the design stage, and is scheduled to receive a Construction-Stage Housing Performance Evaluation as the result of evaluations during implementation and completion.