Steel

The Nevius Street Bridge – Member Design

See here for part 1 of this dive into archaic bridge design. In a pure truss, all of the members are loaded only in axial tension or axial compression. No bridge is composed only of pure trusses – the deck beams that support the roadbed from the side trusses are loaded in bending – but …

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Interesting Because It Is Ordinary

Today’s post and a few more to follow are going to focus on the Nevius Street Bridge in Raritan, New Jersey. It’s simultaneously historic and interesting, and utterly common and boring. It was built in 1886 during an era when thousands of similar truss bridges were constructed across the United States. There is nothing in …

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A Code Change Made Visible

The picture above is a storefront on the Upper West Side. The building in question was constructed in 1899 and is seven stories tall, which make it quite likely that the structure consists of masonry bearing walls and wood-joist floors. The remarkable thing about the picture is that the big riveted built-up plate girder supporting …

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Simultaneous Developments

That picture shows the condition of a terra-cotta cornice on a steel-framed apartment house that I was examining some 23 years ago. You can’t see the cornice proper, which is above the frame of the picture; the big curved piece of terra cotta that occupies most of the shot is a decorative bracket below the …

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