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FORUMS Photo Sharing & Visual Enjoyment Nature & Landscapes 
Thread started 22 Jan 2008 (Tuesday) 22:03
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post your pictures of bridges

 
Grand ­ Dad
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Jan 29, 2019 12:54 |  #2056

San Diego–Coronado Bridge

IMAGE: https://lateapexphoto.com/img/s/v-3/p3274869889-5.jpg

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Larry

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avondale87
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Jan 29, 2019 13:37 |  #2057

Inspeqtor wrote in post #18800631 (external link)
Richard,
How is it possible to "measure the expansion of the bolts"? What is the reason to need to know this information?
Thank you

Probably should have said tension, and I meant nuts, not bolts. Long time ago, but I'd take a micrometer and measure something.
Someone familiar with these type of constructions would know.
Here's that bridge

avondale87 wrote in post #18665834 (external link)

There's a lot that goes on with bridges we are completely ignorant about, thankfully.
I once sat under a bridge all night to record temperature and deflection of a newly opened bridge that used post tressed beams.
Another time had to measure the underside of beams for variations due to expansion of concrete due to rust of reinforcing rods inside them.
Also measurements to check the hog of beams as they are stressed against their theoretical calculated hog



Richard

  
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avondale87
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Post edited 16 days ago by avondale87.
     
Jan 29, 2019 13:52 |  #2058

Timphoto wrote in post #18800671 (external link)
Thanks! It wasn't for work, but just the opportunity to photograph from that vantage point.

There are more shots HERE (external link) of the Golden Gate. There are also some shots of the Bay Bridge when it was under construction.

The Bay Bridge was scary - the construction elevator only went to 500 feet. To get to the top there was 30 feet of scaffolding that wiggled like a belly dancer and looked like it was tied to the main structure with ribbons, and for added "fun" there was a 15 knot wind.

Those others are awesome and interesting.
Like the lane change midspan, construction photos. All of them :-)

Thanks for posting.



Richard

  
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Jan 29, 2019 14:33 |  #2059

Rebel Ti / 300v.
85mm f1.8.
Agfa Vista 200.

Mackinaw Bridge. 6/18

IMAGE: https://c2.staticflickr.com/8/7921/32901966508_3e192e6f4f_b.jpg

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Jan 30, 2019 18:50 |  #2060

avondale87 wrote in post #18800782 (external link)
There's a lot that goes on with bridges we are completely ignorant about, thankfully.

True that, but the amazing part is to see the engineering that was accomplished in the 1930's (Wikipedia tells me that the Golden Gate opened in 1937). It was designed with pencil and paper, math done by hand, I'll assume reasonably good materials but without the exhaustive QA, NDE and paperwork that is available today, and the design choices probably largely made based on one man's personal experience (as in "I used this feature on this bridge, so let's use it on this one). We do that today, of course, but then run it though solid modeling to validate the design, enjoy detailed peer review, have the work cross checked by our clients, and then check it all again. Frequency and Harmonic analysis simply wasn't available to any large extent without computers that could solve the math, and even today computer modeling is quite limited. Heck, we don't even have accurate torque wrenches today, and the equations to determine bolt stress are debated. Did they even have thread lubricants in 1937? All in all, brilliant engineering.

Cool pics; thanks for sharing 'em.


X100T

  
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philmar
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Jan 31, 2019 13:44 |  #2061

IMAGE: https://farm5.staticflickr.com/4903/45884949335_871609f6b6_b.jpg
IMAGE LINK: https://flic.kr/p/2cUG​mQ8  (external link) [1 minute long exposure] World's longest pier - Progreso, Mexico (external link) by Phil Marion (external link), on Flickr

A photo I took HERE published in National GeographicTime on your hands? Then HERE'S plenty more photos to nibble on (external link):
http://https …photos/phil_mar​ion/albums (external link)

  
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Capn ­ Jack
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Feb 07, 2019 17:04 |  #2062

This bridge is a road in the Barberini Garden. Italy is down below, the road on the bridge is a part of the Vatican.


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Feb 10, 2019 15:58 |  #2063

Photo taken at sunset last night, this is the Agassiz-Rosedale Bridge near Vancouver British Columbia.


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itsallart
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Feb 10, 2019 19:17 |  #2064

By no means my best but just a crazy bridge in Houston


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Renata
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P ­ Taylor
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Feb 10, 2019 20:52 |  #2065


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Feb 10, 2019 22:05 |  #2066

Bridge on the W track in Patagonia.


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Feb 10, 2019 22:30 as a reply to  @ djr81's post |  #2067

Did you ask what time?


-Dane
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Post edited 4 days ago by bidkev.
     
Feb 11, 2019 07:05 |  #2068

IMAGE: https://farm8.staticflickr.com/7848/46239090834_6d0e35c2f5_h.jpg
IMAGE LINK: https://flic.kr/p/2drZ​qL3  (external link) Story Bridge (2) (external link) by Kevin Dickinson (external link), on Flickr

IMAGE: https://farm8.staticflickr.com/7847/46911545892_2d01894264_h.jpg
IMAGE LINK: https://flic.kr/p/2etp​WdL  (external link) Story Bridge (1) (external link) by Kevin Dickinson (external link), on Flickr

See my fishy photography here: https://kevindickinson​fineartphot.smugmug.co​m/Tropical-Fish-2/ (external link)
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Feb 11, 2019 07:41 |  #2069

A bit of a contrast here!

IMAGE: https://farm8.staticflickr.com/7910/40095993603_7dc57d1793_h.jpg
IMAGE LINK: https://flic.kr/p/2469​rYx  (external link) Wee bridge on the Airidh-drishaig path (external link) by Annie MacDonald (external link), on Flickr

flickr (external link)

  
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Feb 11, 2019 18:22 as a reply to  @ post 18022177 |  #2070

where in Bethlehem?


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post your pictures of bridges
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