Tsunami-proof building

A tsunami-proof building is a purposefully designed building which will, through its design integrity, withstand and survive the forces of a tsunami wave or extreme storm surge. It is hydrodynamically shaped to offer protection from high waves.

Examples

An example of such an architecture is where a laminar flow around a building will protect the walls. The structure can also rest on a hollow masonry block that for example can hold a body of water to sustain a family. A design can include battered walls, cantilever steps and a wooden superstructure with the walls jutting out. Bamboo ply panels can be added to cover the sides. A structure like this, concomitant with its mechanical strength, will provide its occupants with independent potable water storage for an extended period of time. The first example known has been constructed at Poovar Island in southern Kerala, India.[1]

United States

In the United States, there is a recognized lack of tsunami-proof design especially in vital installations such as aging nuclear reactors in vulnerable regions.[2] For instance, the Unified Building Code of California does not have any provision about designing for tsunamis.[3] There are few states, such as Hawaii, that began incorporating tsunami-proof design within its building code.[4] Some experts, however, doubt the efficacy of the tsunami-proof buildings, arguing that the force of the tsunami is unknown and that the impact is often so great that specialized building elements would be rendered ineffectual.[3]

Tsunami-proof buildings in Japan

There are important facilities in Japan, which is often inundated with tsunamis, that feature tsunami-proof design. The Hamaoka Nuclear Power Plant has a barrier wall designed to protect the facility from tsunami wave caused by an earthquake predicted along the Nankai Sea trough.[5] The barrier itself is made of continuous steel pipes and steel box frames. In other Japanese nuclear facilities, tsunami proofing includes building elements such as doors and balconies in the reactor and auxiliary buildings.[6]

The March 2011 Fukushima Daiichi nuclear disaster was caused by a tsunami wave 13 meters (43 ft) high that overtopped the plant's 10 m (33 ft) high seawall.[7] Despite its defenses, the Hamaoka plant has been shut down since May 2011 to avoid a similar disaster.

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See also

References
  1. Standing tall against tsunami
  2. Khan, Mohuiddin (2013). Earthquake-Resistant Structures: Design, Build, and Retrofit. Amsterdam: Elsevier. p. 164. ISBN 9780080949444.
  3. Beatley, Timothy (2009). Planning for Coastal Resilience: Best Practices for Calamitous Times. Washington: Island Press. p. 118. ISBN 9781597265614.
  4. Office of coastal Zone Management (1978). Hawaii Coastal Zone Management Program: Environmental Impact Statement. Washington, D.C.: U.S. Department of Commerce. p. 46.
  5. Hamada, Masanori (2015). Critical Urban Infrastructure Handbook. Boca Raton, FL: CRC Press. p. 9. ISBN 9781466592056.
  6. Kato, Yukita; Koyama, Michihisa; Fukushima, Yasuhiro; Nakagaki, Takao (2016). Energy Technology Roadmaps of Japan: Future Energy Systems Based on Feasible Technologies Beyond 2030. Berlin: Springer. p. 79. ISBN 9784431559498.
  7. Lipscy, Phillip; Kushida, Kenji; Incerti, Trevor (2013). "The Fukushima Disaster and Japan's Nuclear Plant Vulnerability in Comparative Perspective" (PDF). Environmental Science & Technology. 47 (12): 6082–6088. doi:10.1021/es4004813. PMID 23679069.
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