Oak Island Bridge Collapse
Oak Island Bridge Collapse
(OP)
http://vid eo.google. com/videop lay?docid= -106607964 6396266260
Video of Oak Island Bridge collapse. I haven't been able to find much on what happened. It looks like they were setting girders at a splice and the splice bracket was bumped and gave way.
Video of Oak Island Bridge collapse. I haven't been able to find much on what happened. It looks like they were setting girders at a splice and the splice bracket was bumped and gave way.






RE: Oak Island Bridge Collapse
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RE: Oak Island Bridge Collapse
RE: Oak Island Bridge Collapse
I think something else was at work - the other hangers from the first girders set didn't fail.
RE: Oak Island Bridge Collapse
I haven't seen any photos, but tack welds on high strength steel do a lot more damage than just decreasing the area.
RE: Oak Island Bridge Collapse
RE: Oak Island Bridge Collapse
RE: Oak Island Bridge Collapse
RE: Oak Island Bridge Collapse
It depends on the chemistry of the bars, but tack welding on some types of high strength bars can cause embrittlement, and the tack weld creates a stress riser, essentially destroying the bar.
RE: Oak Island Bridge Collapse
The bars have a very coarse thread. I presume someone tacked the bars on one end to keep the coupler in place while the bars on the other end were screwed on.