Opinions On This 50m Steel Span Bridge Without Supports

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  • #1
morrobay
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The bridge sections in photo are being welded / bolted ? together on site. Is this going to be structurally
strong enough for a pedestrian bridge ?
750x422_812013_1535965137.jpg
 

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  • #2
phinds
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Do you seriously think that nothing but the "information" in that picture is enough to base an engineering judgement on???
 
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  • #3
berkeman
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I see a squirrel, what a cute squirrel. What is that he's eating? :oldeyes:
 
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  • #4
BvU
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It will certainly be safer than crossing a ten-lane racing circuit ... :rolleyes:
 
  • #7
Tom.G
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I have only light knowledge of structural design but that truss made of 8 inch (20cm) I-beams and box-beams looks very sturdy. If there had been a center support, the bridge would only remain until a vehicle crashed the center support; a somewhat likely thing to happen.

I agree the assembly of the three pieces is critical.

(Dimensions were estimated assuming the bus is 10 feet (3m) high.)
 
  • #8
Baluncore
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Is this going to be structurally strong enough for a pedestrian bridge ?
That depends on how many students try to break the "greatest number of people on a bridge" record.
Where is it? India? Or will it be coated in ice during winter, then hit by a hurricane?
The pedestrians are the least of the problems.
 
  • #9
phinds
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I have only light knowledge of structural design but that truss made of 8 inch (20cm) I-beams and box-beams...
and you are getting this from the picture, how?
 
  • #10
cjl
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There are some more pictures linked in that forum in post 5. It looks pretty sturdy, but you really can't tell any detail without knowing a lot more about the design.
 
  • #11
phinds
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There are some more pictures linked in that forum in post 5. It looks pretty sturdy, but you really can't tell any detail without knowing a lot more about the design.
I assumed those were all just examples of the KIND of structure he's talking about
 
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  • #12
cjl
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Could be. I was under the impression that was the exact structure in question, but regardless, there's no way to say what the safe load and safety factor is without far more info.
 
  • #13
russ_watters
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Is this going to be structurally
strong enough for a pedestrian bridge ?
Based on the fact that it is a real bridge under construction I conclude that it has been designed by a qualified engineer and the plans reviewed and approved by a qualified code enforcement agency and therefore will be structurally strong enough. Anything beyond that - as others indicate - is pointless speculation. Thread locked.
 

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