Not quite a disaster but interesting
Not quite a disaster but interesting
(OP)
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
Not quite a disaster but interesting
|
RE: Not quite a disaster but interesting
Those are large bolts! (size of a human arm).
I think there were falling bolts discovered many years ago by a custodian inside the Kemper Arena (I think) and that lead to a major repair/response.
Check out Eng-Tips Forum's Policies here:
FAQ731-376: Eng-Tips.com Forum Policies
RE: Not quite a disaster but interesting
RE: Not quite a disaster but interesting
Check out Eng-Tips Forum's Policies here:
FAQ731-376: Eng-Tips.com Forum Policies
RE: Not quite a disaster but interesting
Yup, nothing to see here. [sarcasm]6-inch thick bolts 2 or 3-feet long are inconsequential to any design, and we really didn't need them. The engineer just spec'd them so he could look smart.[/sarcasm]
RE: Not quite a disaster but interesting
In one of his books, J.E.Gordon mentions a ship's cook who noticed a crack in the floor of his kitchen (galley?). He reported it to the captain, who told him not to worry about it. "Being of scientific bent", the cook started to mark the dates next to the end of the crack as it propagated along the floor. When the ship split in half, the dates turned out to be on the half that stayed afloat. This has provided much knowledge of crack propagation.
No mention of whether the cook survived.
--
JHG
RE: Not quite a disaster but interesting
Assuming
RE: Not quite a disaster but interesting
Probably, he survives if he is on the part that floats. He has some change, possibly very small, of scrambling to the floating half if he is in the water.
--
JHG
RE: Not quite a disaster but interesting
http://www.architectsjournal.co.uk/buildings/broke...
RE: Not quite a disaster but interesting
Check out Eng-Tips Forum's Policies here:
FAQ731-376: Eng-Tips.com Forum Policies
RE: Not quite a disaster but interesting
RE: Not quite a disaster but interesting
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Not quite a disaster but interesting
RE: Not quite a disaster but interesting
That cook probably survived only to be fired.
"If you don't have time to do the job right the first time, when are you going to find time to repair it?"
RE: Not quite a disaster but interesting
I have never heard of hydrogen embrittlement in a non-process environment, but I not a metalurgist. Anyone got any info. on this?
http://www.telegraph.co.uk/finance/newsbysector/co...
RE: Not quite a disaster but interesting
IHE typically is process related, and EHE typically is environment related. A recent civil engineering example of EHE is the occurrence of fractured threaded rods for the San Francisco-Oakland Bay Bridge, with information here:
http://baybridgeinfo.org/rods
RE: Not quite a disaster but interesting
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Not quite a disaster but interesting
After reading further into the article, HE was the factor.
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Not quite a disaster but interesting
environmental hydrogen embrittlement (EHE)—hydrogen embrittlement caused by hydrogen introduced into a steel/metallic alloy from an environmental source coupled with stress either residual or externally applied.
internal hydrogen embrittlement (IHE)—hydrogen embrittlement caused by absorbed atomic hydrogen into the steel/metallic alloy from an industrial hydrogen emitting process coupled with stress, either residual or externally applied.
RE: Not quite a disaster but interesting
http://mtc.ca.gov/projects/bay_bridge/A354.htm
RE: Not quite a disaster but interesting
Yep, and one heck of a retrofit using PT in every-which-way of directions...
RE: Not quite a disaster but interesting
http://www.fastenerandfixing.com/fastenerandfixing...
RE: Not quite a disaster but interesting
http://www.sacbee.com/news/investigations/bay-brid...
John R. Baker, P.E.
Product 'Evangelist'
Product Engineering Software
Siemens PLM Software Inc.
Digital Factory
Cypress, CA
Siemens PLM:
UG/NX Museum:
To an Engineer, the glass is twice as big as it needs to be.