ABSTRACT
A commercial building was constructed in Kagoshima City, Japan in 2003 to 2004. The building is 7-storied building with a basement floor, having a building area of 9000 m2, a floor area of 50000 m2 and a maximum height of 45 m (Figure 1). The building has a composite structure consisting of steel reinforced columns and steel beams. Piled raft foundation was employed for this building to reduce the average settlement as well as the differential settlements. The raft supported by 160 piles was placed on a sandy ground The building was constructed using reverse construction method, in which construction of the superstructure (building) and the substructure (foundation) were constructed simultaneously, in order to reduce the construction period.
