Gentle suspense. Tortured heroes. Mischievous heroines.

Sunday, February 2, 2014

historical trivia: the largest unsupported concrete span in the world

From its completion in 125 A.D. until 1958, the Pantheon's domed ceiling was the largest unsupported concrete span in the world. It was surpassed only with the construction of the CNIT building in Paris.
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Inexpensive carpet sweeper. When pulling out the vacuum isn't worth the effort.