My "Favorite" Structural Failure
My "Favorite" Structural Failure
(OP)
OK. I'll test the new step four.
Here is mine - an erection problem none the less, not dissimilar to the problem encountered at the Husky Stadium expansion failure in the '80's.
BRACE, BRACE, BRACE!
Here is mine - an erection problem none the less, not dissimilar to the problem encountered at the Husky Stadium expansion failure in the '80's.
BRACE, BRACE, BRACE!
Mike McCann
McCann Engineering






RE: My "Favorite" Structural Failure
RE: My "Favorite" Structural Failure
The next day when I took my wife to work, I saw that now on the job site there was just one huge pile of studs, joists and broken up roof trusses.
RE: My "Favorite" Structural Failure
911 dispatcher didnt know what a girder was and told cdot crew to look around. They thought it was a tranportation sign or something.
RE: My "Favorite" Structural Failure
Those beams are awful slender though.
I have seen many portal frames built where they erected the first two frames and then put the cross bracing between them. It is usually okay if you have a beam with a decent flange width.
In Australia, I never saw the first portal being braced. And in my experience the health and safety is stricter in Australia than in the US.
csd
RE: My "Favorite" Structural Failure
It appears to be due to lack of top chord stability at erection time, combined with member discontinuity at the splices.
For an unusual structure such as this the designer should have specified adequate bracing during erection.
RE: My "Favorite" Structural Failure
(If anyone's wondering it seems that only one file can be attached per post.)
RE: My "Favorite" Structural Failure
To me, it just looks so preventable, and so stupid.
Mike McCann
McCann Engineering
RE: My "Favorite" Structural Failure
EJL
RE: My "Favorite" Structural Failure
interesting pics - no cross bracing so it looks like they all rolled together.
msquared48,
The uk have a commitee aimed at learning from structural failures - I think ASCE is looking to join in on the initiative. Check out
http://www.scoss.org.uk/
csd
RE: My "Favorite" Structural Failure
NTSB report here:
http://www.ntsb.gov/publictn/2006/HAB0601.pdf
Hg
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RE: My "Favorite" Structural Failure
It seems that more and more contractors are going to be hiring engineers to review construction-related shoring, bracing, erection processes, etc.