I missd this from last Friday, the New York Times has an op-ed about Dubai and specifically the Burj Khalifa: “The Age of Concrete.”
Key quote:
From a technological standpoint, it’s profoundly impressive that a reinforced concrete frame has outperformed the steel of Taipei 101 — the previous record holder for height — by 1,050 feet. This achievement suggests a new era in structural engineering: the compressive strength of concrete has tripled in the last four decades, allowing concrete structures to be thinner, lighter and far, far taller.
Tags: Burj Khalifa, Dubai, NY Times