Cost Implications for Including Tsunami Design in Mid-Rise Buildings along the US Pacific Coast
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2019
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University of Hawaii at Manoa
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Tsunami design requirements for construction in the United States of America have been added to the current edition of ASCE/SEI 7-16, “Minimum Design Loads and Associated Criteria for Buildings and Other Structures”. This standard, including the new Chapter 6 on Tsunami Loads and Effects, was adopted by the International Building Code, IBC-2018, which will soon apply to most communities throughout the US. Tsunami design is required for all Tsunami Risk Category (TRC) III and IV buildings located in the mapped Tsunami Design Zone (TDZ) along the coastlines of the five US Western States, namely Alaska, California, Hawaii, Oregon and Washington. Local jurisdictions are encouraged to require tsunami design for TRC II buildings within the Tsunami Design Zone if they have sufficient height to provide “refuge-of-last-resort” for those who cannot evacuate to high ground. The improved performance of these structures during future tsunamis will also increase the resilience of these communities. This study evaluates the cost premium if tsunami design is required for mid-rise commercial and residential reinforced concrete buildings located in the TDZ.
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Tsunami resistant design
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North America--Pacific Coast
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