Month: December 2018

Meticulous Records

Twice – in the 1940s and in the 1980s – the government of New York has photographed every single building in the city in order to improve tax records. The 1940s photographs have been digitized and are available online. The Times went with a then-and-now approach, which is somewhat interesting. More importantly, this makes researching …

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An Analysis of Rooftop Farming

The construction of buildings does not remove or destroy land acreage, it simply converts some of it to rooftops. People have had plantings on roofs for a very long time – the Hanging Gardens of Babylon, one of the seven ancient wonders of the world, were planted terrace roofs – and one of the reasons …

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An Old Problem Resurfaces

Innovations sometimes don’t work well. The Millennium Bridge in London, which was a new twist on suspension bridge design, moved noticeably when it was built and needed a retrofit to reduce the sway. An article on the intersection of structural dynamics, statistics, and the biomechanics of the human gait – Walking Crowds on a Shaky …

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