Month: August 2015


Because we live in an era of rapid technological change, we are used to (if not necessarily comfortable with) the idea of obsolescence. When I started my first job as an engineer, our office relied on a mini-computer for heavy-duty analysis, and on paper and calculators for everything else. We had one phone for every …

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Something You Don’t See Every Day

That is a picture (click to enlarge) of a Guastavino vault floor supported on a Guastavino arch “girder.” Guastavino construction – thin-shell vaults made from layered tiles – was Catalan vaulting adapted to American practice. It’s famous for long spans and impressive structures. At this building, it’s used for all of the interior floors, and …

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Bow Bridge

The construction is done and getting press. The work went well from start to finish, even if it did take four years from when we first got involved. This blog, of course, is a place to discuss the engineering details that tend to be overlooked while people are staring at beautiful architecture. In this case, our …

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