Re: Curved steel bridges--they exist

Ray Haddad wrote:
[...]
A thousand or so years ago, as a young engineering student, we had
to be multi disciplined after a fashion by being exposed to a
variety of engineering subjects. I was an Electronics Engineer but
had to suffer through some Mechanical, Civil, Hydraulic and
Electrical before I was allowed to choose my final discipline.

We designed bridges of all types but none of them were curved, I'm
afraid. I know it can be done as we have seen proof in the photos.
It strikes me as odd that in the face of evidence, we still cannot
agree that a curve bridge can and does exist.

It reminds me of the Flat Earth Society in a strange way.
--
Ray


Ah, it's just a semantic problem. Most people think of the deck when they think of a bridge, is all. What we actually have is:

a) straight spans, straight decks, straight track --> a straight bridge
b) straight spans, curved decks, curved track --> a curved bridge
c) straight spans, straight decks, curved track --> a straight bridge (usually single span***), or a curved trestle bridge
d) curved spans, curved decks, curved roadway or track --> a curved bridge

I think I've covered all cases.

***MR some years ago published a photo of a wide through girder bridge with a curve over it. Span looked to be about 40ft, inside width about 20ft. An overpass carrying a spur into a factory, IIRC.

HTH
.

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