The Citicorp tower design flaw that could have wiped out the skyscraper: 99% Invisible by Roman Mars.
Friday, April 25th, 2014Design Flaw That Almost Wiped Out an NYC #Skyscraper: “corner” winds on Citicorp building require reinforcement
http://www.slate.com/blogs/the_eye/2014/04/17/the_citicorp_tower_design_flaw_that_could_have_wiped_out_the_skyscraper.html