SPANS OF SPACE AND TIME
By Chris Daly
As I looked recently at the diagrams and photos of the collapsed section of the Big Dig connector in Boston I was reminded of a visit I took with my family to Rome last year.
We saw many examples of Roman architecture and engineering, including some that were quite ancient but still standing. It made me wonder about how our own public works will endure.
As I recall them, all the structures we saw in Rome were built of stone, not concrete. And all were built in the form of the arch or the dome. If there were cases of ancient Roman attempts to span space with flat roofs, we didn't see any. They must have all fallen down.
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