Wrought Iron

Historic Structural Detail: Geometric Strength

Some structural forms are more efficient than others. For example, roof trusses tend to be deep (vertically) relative to their spans. Trusses can be examined at two scales: at a small scale, member by member and connection by connection, or at the overall scale, where they are analogues of beams. It’s at the overall scale …

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Historic Structural Detail: A Composite Arch

One of the earliest challenges for structural engineers – long before the profession formally existed – was how to support masonry walls over openings. The tight column spacing of Greek and Egyptian temples, for example, was based in part on the limited spanning capacity of stone beams. Masonry arches, as used by the Romans, could span …

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