Structural Engineer's Eye Candy
Structural Engineer's Eye Candy
(OP)
You can visualize the load path. Very nice old bridge.
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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Structural Engineer's Eye Candy
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RE: Structural Engineer's Eye Candy
RE: Structural Engineer's Eye Candy
RE: Structural Engineer's Eye Candy
This photo is from www.shorpy.com
RE: Structural Engineer's Eye Candy
http://en.
Mike Halloran
Pembroke Pines, FL, USA
RE: Structural Engineer's Eye Candy
RE: Structural Engineer's Eye Candy
It says that this type of structure was used in Europe at that time. I can't think of any European arches of that type from as early as 1908.
Any suggestions?
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: Structural Engineer's Eye Candy
RE: Structural Engineer's Eye Candy
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I thought it was much more recent than that (don't know why, as it was a Gustaf Eifel design).
Also Brunel's Royal Albert Bridge, from 1859, has some similarities:
http://en.wikipedia.org/wiki/Royal_Albert_Bridge
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: Structural Engineer's Eye Candy
http://en.wikipedia.org/wiki/Hell_Gate_Bridge
RE: Structural Engineer's Eye Candy
http://en.wikipedia.org/wiki/Maria_Pia_Bridge
http://en.wikipedia.org/wiki/The_Iron_Bridge
RE: Structural Engineer's Eye Candy
http://
(The first and only bridge designed by Eads)
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: Structural Engineer's Eye Candy
RE: Structural Engineer's Eye Candy
Rail Tunnel: 278' long rail tunnel which runs directly under downtown. I was involved with lowering the track (for the third time in the tunnels long history) in 2007. Cool project.
RE: Structural Engineer's Eye Candy
RE: Structural Engineer's Eye Candy
The Wikipedia article goes on to say: "As a departure from a normal three-hinged arch, the design incorporates a compression joint in each arch instead of the third hinge. He apparently did this to provide a continuous visual curve through the arches."
BA
RE: Structural Engineer's Eye Candy
Tacoma narrows anyone...
tg
RE: Structural Engineer's Eye Candy
I liked the Maria Pia Bridge. Very nice "feel" to it.
All of these bridges seem to give me a sense that the lateral resistance to wind (per trainguy's comment) sort of makes you wonder how the calculations would come out with today's wind provisions.
Perhaps the bridges, despite their "airy" look, had enough mass to simply counteract any Tacoma Narrows effects.
RE: Structural Engineer's Eye Candy
RE: Structural Engineer's Eye Candy
I did read that, but would have to see the detail to be convinced that he had a real hinge. Perhaps he just assumed a hinge to make the analysis easier.
RE: Structural Engineer's Eye Candy
http://bridgehunter.com/vt/windham/bellows-falls/
The demolition of this beautiful and historic structure seems yet another example of the way in which the products of engineers are seen as less important than those of architects.
I wonder if the original design calculations and drawings are filed away somewhere.
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: Structural Engineer's Eye Candy
http://loc.gov/pictures/item/nh0001/
The photographs are available for viewing or download in high res or very high res (20 MB!).
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: Structural Engineer's Eye Candy
RE: Structural Engineer's Eye Candy
The lateral bracing at the hinge is not connected to the bottom chord. It is connected to the top chord and a vertical member half way between top and bottom chords, so how is the lateral bracing compromised?
BA
RE: Structural Engineer's Eye Candy
http://ne
Doug Jenkins
Interactive Design Services
http://newtonexcelbach.wordpress.com/
RE: Structural Engineer's Eye Candy
The brace you are describing is the transverse sway brace. The lateral bracing truss, tension only diagonals, is all in the plane of the top chord, and I thought the top chord was discontinuous at the joint, but the latest view which Doug attached shows a gusset there, so the "hinge" is just a half height connection.
RE: Structural Engineer's Eye Candy
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Structural Engineer's Eye Candy
The bridge had a badly damaged portal frame at one end. We had to run some analysis for the demo guys.
Anyway....
You might be surprised by this...there was a total of 3 drawings for the bridge and, here is the kicker, the design calculations were included on one of the drawings.
Bridge stood, in service, for 100 years.
RE: Structural Engineer's Eye Candy
In NYC back in the late 19th/early 20th C. the railroads were responsible for constructing vehicular bridges if their trackage was to be installed on a city street.