Some HVAC duct collapsed in the swimming pool area of a hotel in Denver over the weekend. No one was killed but injured several. Looks like some pretty heavy-duty duct work. No word on cause but one has to think corrosion whatever was used to hang the duct is a likely culprit.
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HVAC Duct Collapse - Gaylord Hotel - Denver 6
- Thread starter Rabbit12
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- #2
SWComposites
Aerospace
corrosion above an indoor pool? nah.
Since the fallen ducting is below the ceiling, it's interesting that it's noted that "black sludge" poured out of that ceiling.
Here's a pretty nice before shot:
and another:
I'm kinda suspecting the supports for the duct were too weak. The place is only 5 years old, and I just don't believe the dreaded chlorine could have destroyed the supports that quickly.
Think: crap design
spsalso
Here's a pretty nice before shot:
and another:
I'm kinda suspecting the supports for the duct were too weak. The place is only 5 years old, and I just don't believe the dreaded chlorine could have destroyed the supports that quickly.
Think: crap design
spsalso
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TugboatEng
Marine/Ocean
The black sludge came from a fire sprinkler pipe that broke.
SCC can certainly cause supports to fail rapidly. Cold drawn support members of SS alloys such as wire hangers are not recommended.
SCC can certainly cause supports to fail rapidly. Cold drawn support members of SS alloys such as wire hangers are not recommended.
- Thread starter
- #8
5 years is a long time spsalso. I've personally seen a 316 SST hose clamp corrode and fail on a vent fan for WTP clearwell in a couple weeks.
Here's an interesting thing to me. The Gaylord hotel is in charge of the "investigation". Seems to me that should be independent.
Here's an interesting thing to me. The Gaylord hotel is in charge of the "investigation". Seems to me that should be independent.
EdStainless
Materials
It isn't legal to use SS overhead in public pools.
There are books about the issues, in Europe mostly.
People forget that it isn't the Cl, it is the volatile chloramines that drive rapid pitting and SCC.
And those are what you smell in a pool room.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
There are books about the issues, in Europe mostly.
People forget that it isn't the Cl, it is the volatile chloramines that drive rapid pitting and SCC.
And those are what you smell in a pool room.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed
TugboatEng
Marine/Ocean
EPA.gov said:
Dang kids whizzing in the pool.
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