Seattle boosts seismic construction standards for new skyscrapers, but older high-rises are biggest concern


Researchers found the sedimentary basin under [Seattle] can amplify the type of ground motion that’s hardest on high-rises by a factor of two to five — much more than previous estimates. In response, Seattle and Bellevue are boosting seismic standards for new buildings 240 feet or taller [...] But the prospect of stronger shaking also raises concerns about older high-rises



Justine Testado via Archinect - News http://bit.ly/2Vis1Vz

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