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#122196 - 10/03/05 09:35 AM Hybrid Installation  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,262
Fullerton, CA USA
Well, not really, but it looks like the fittings were supplied by the plumber.

When are these required?


[Linked Image]


Tools for Electricians:

#122197 - 10/03/05 11:30 AM Re: Hybrid Installation  
Lostazhell  Offline
Member
Joined: Feb 2004
Posts: 1,431
Bakersfield, CA (Originally Or...
Looks like someone's creation to buffer vibration from the conduit run or possibly for expansion/contraction....


#122198 - 10/03/05 11:39 AM Re: Hybrid Installation  
sandsnow  Offline
Member
Joined: Sep 2004
Posts: 167
Irvine, CA, USA
I've seen the rubber ones used in bridges. Normally for seismic joints FMC or LTFMC is used.

Maybe using these is cheaper than LTFMC for machinery vibration.


Larry LeVoir
Inspector
City of Irvine, CA

#122199 - 10/04/05 01:45 PM Re: Hybrid Installation  
ghost307  Offline
Member
Joined: May 2005
Posts: 916
Chicago Illinois USA
Those are called "deflection couplings". They're used when the conduit on one side may end up misaligned with the other due to movement or vibration. You can find them in the Appleton catalog.


Ghost307

#122200 - 10/05/05 01:31 PM Re: Hybrid Installation  
Ryan_J  Offline
Moderator
Joined: Aug 2003
Posts: 1,374
West Jordan, Utah, USA
How does the conduit stay bonded with these?


Ryan Jackson,
Salt Lake City

#122201 - 10/05/05 07:15 PM Re: Hybrid Installation  
Redsy  Offline
Member
Joined: Mar 2001
Posts: 2,056
Bucks County PA
Probably bonding is accomplished with a flexible braid or strap.


#122202 - 10/05/05 08:50 PM Re: Hybrid Installation  
Nick  Offline
Member
Joined: Aug 2001
Posts: 599
Riverside, CA


#122203 - 10/07/05 12:37 AM Re: Hybrid Installation  
Tesla  Offline
Member
Joined: Jun 2004
Posts: 1,273
Sacramento, CA
They look like the technology developed by the USAF for ICBM and command bunkers for nuclear war.

In such systems, everything -- I mean everything -- is on flexi-mounts so as to work after a Richter 15 earthquake.

Specified normally in government contracts only.


Tesla

#122204 - 10/18/05 08:07 AM Re: Hybrid Installation  
electure  Offline


Member
Joined: Dec 2000
Posts: 4,262
Fullerton, CA USA
Nick,
I'm not surprised that you recognize these! [Linked Image]

This is insisde the parking structure at Treasure Island, Las Vegas......One of your little projects.



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