Miami’s Waldorf Astoria residential tower, poised to be South Florida’s tallest skyscraper, is a test case for new techniques meant to enable the more than 1,000-foot tall building to withstand hurricane-force winds and remain stable near sea level. Developers broke ground on the building’s foundation in downtown Miami in October. The 100-story tower, which resembles a series of glass cubes stacked on top of each other, will feature 205 hotel guest rooms and 360 luxury condo residences. It would be the city’s first supertall structure, and the tallest residential building south of New York City when completed around 2027, according...