Blaine Brownell
3/13/2010
Dubai’s Burj Khalifa, now the world’s tallest building, is made of reinforced concrete, a material that has surpassed the use of steel used to build the previous recordholder for height. This engineering achievement shows that the strength of concrete has tripled in the last four decades, allowing concrete structures to be thinner, lighter, and far taller.
Brownell, the author of “Transmaterial: A Catalog of Materials that Redefine our Physical Environment,” is an assistant professor at the University of Minnesota School of Architecture.
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