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Japanese architectural firm Endo Shuhei Architect Institute has designed the Looptecture F in the Port of Fukura, Japan. The main function of this building is to control and secure all the floodgates located at the port. It is also designed to provide a place of refuge in case of a tsunami warning. The unique shape of the structure, which resembles a ribbon coiling in on itself, is designed to withstand a tsunami and drift.
Main floor of the building is higher than the assumed maximum height of tsunami waves and the ground floor opens to allow the waves to pass through. The curved outside walls disperse the stress efficiently. The two-storey building consists a central control room, a machinery room, a hall, a disaster learning room and an exhibition room.