Tougher building rules for skyscrapers have been drawn up by the City of London because of concerns that a high-rise, urban microclimate will generate winds capable of knocking over cyclists and pedestrians.
Developers will have to provide more comprehensive safety assessments of how proposed buildings will affect people on street level, with more robust testing of roadways and pavements using detailed scale models in wind tunnels and computer simulations.
— The Guardian
After a series of high-profile skyscraper design controversies, including documented incidents of pedestrians being knocked off their feet and cyclists being pushed sideways into the path of vehicles due to strong skyscraper-generated winds, London is moving to regulate the wind-driven impacts of new high-rise towers in the city.
Moving forward, the city will require tower projects to meet a tougher set of wind regulations at the start of the design development phase, according to The Guardian. Those tests will be coupled with later “micro-level” examinations of a given tower’s design that will test the magnitude and degree of wind generated by the forms of new skyscrapers, as measured from “36 wind directions, using separate consultants for computer and physical simulations,” according to The Guardian.
Under the new rules, the speed of downdrafts created by new towers will be capped at 18 miles per hour. Measured speeds at that level and above will be classified as being “uncomfortable” in the new guidelines, forcing developers to pursue mitigating plans to cut down on the amount and force of the winds generated by their projects.
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Remarkable how a city can trash and soil itself. In any event I thought Brexit was going to make London a vast wasteland?
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