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EMT VS Rigid

10/23/2012 5:42 PM

EMT is too lightweight, yet Rigid is too heavy, is there anything in between?

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#1

Re: EMT VS Rigid

10/23/2012 5:51 PM

What's it do?

Would filling EMT with rigid foam be enough? 2 pound per cubic foot is about as light as it can be poured onto a tube. I'm talking about foam-in-place urethane. That will stick to the inside of the tube.

I suppose Titanium is out of the question? How long is a section?

Do you need a tubular structure?

Just a thought.

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#2

Re: EMT VS Rigid

10/23/2012 6:30 PM

I am guessing EMT is not related to an experimental music group (not unless Rigid is similar to German Trance).

Can you supply more information please.

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#9
In reply to #2

Re: EMT VS Rigid

10/25/2012 1:37 AM

Yet another CRIMINAL use of acronyms.

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#10
In reply to #9

Re: EMT VS Rigid

10/25/2012 5:29 AM

En Minä Tiedä (Finnish for I don't know).

I have linked to your CRIMINAL definition several times. GA BTW (Good Answer, By The Way).

The big problem is that if you use acronyms which are specific to your area of knowledge then the only people who will respond are people who are also specialists in your area, and, you would probably be better off going to a specialist forum.

With CR4 you are much more likely to pull in information from other walks of life unless you exclude those others by the use of acronyms.

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#11
In reply to #10

Re: EMT VS Rigid

10/25/2012 6:33 AM

Unless I've missed it, we still don't know what the TLA (3-letter abbreviation) stands for.

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#14
In reply to #11

Re: EMT VS Rigid

10/25/2012 9:31 AM

Theatre of Living Arts (TLA)

334 South St, Philadelphia, PA 19147

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#16
In reply to #14

Re: EMT VS Rigid

10/25/2012 10:33 AM

One of the craziest acronyms I ever came across was AMD in a manual from a certain large American computer manufacturer. It turns out that AMD stands for Air Movement Device or in other words a fan.

Great, take a perfectly understandable three letter word and replace it with a perfectly confusing three letter acronym.

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#18
In reply to #11

Re: EMT VS Rigid

10/25/2012 1:34 PM

I think it's probably Electrical Metallic Tubing i.e. conduit

Compared with Galvanized Rigid (GRC) Conduit And

Intermediate Metal Conduit: there's a link below

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#19
In reply to #18

Re: EMT VS Rigid

10/26/2012 12:29 AM

Could also be Extruded Metal Tubing

Plus a whole plethora of things that range from

Emergency Medical Technician

to

Epithelial-Mesenchymal transition

Anyway my point is it's ok to use acronyms, but for Pete's sake remember you're corresponding with people from all over the world and there's a good chance that many of them that could help you will not understand what you are talking about, so at least in the first instance use the full words.

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#20
In reply to #19

Re: EMT VS Rigid

10/26/2012 4:46 AM

Exactly: I couldn't agree more

And I'd just like to re-iterate a point I made in that thread

"The point is that for every post there is one writer and many readers: so, it seems more efficient to me if the writer puts in a bit more effort so that the readers can each put in a bit less."

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#22
In reply to #20

Re: EMT VS Rigid

10/27/2012 11:26 PM

Here-here! I would like to repeat at least three more times the things I've been reading for the last five posts. Unidentified acronyms are not good. Does anyone agree?

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#3

Re: EMT VS Rigid

10/23/2012 6:37 PM

According to Goldilocks, Intermediate Metal Conduit (IMC) should be "just right".

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#4
In reply to #3

Re: EMT VS Rigid

10/23/2012 10:29 PM

Perfect setup - I couldn't resist.

Here's a link http://www.steelconduit.org/index3.htm to dimensions of all 3. If weight is the consideration, aluminum rigid conduit is available. Those should be available at an electrical supply store. Also, a multitude of sizes of steel (and other materials) mechanical tubing is produced. You can see some of what's available here: http://www.mcmaster.com/#standard-steel-hollow-tubing/=jupvvc . Unless you have a local steel supplier, and depending on the quantity, shipping costs can be astronomical.

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#5
In reply to #4

Re: EMT VS Rigid

10/23/2012 11:04 PM

Thanks Big,

awesome info thanks.

Joe

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#6

Re: EMT VS Rigid

10/24/2012 3:12 AM

Triangles?

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#7
In reply to #6

Re: EMT VS Rigid

10/24/2012 2:46 PM

Ha, just watched BBC's Red Dwarf episode "Meltdown" again yesterday.

Einstein to Pythagorous........"Everything is always triangles with you Pythagoras! You can't solve everything with triangles you know, your driving me mad!"

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#8

Re: EMT VS Rigid

10/24/2012 10:41 PM

Not sure what your trying to do with these materials, but Aircraft grade 4130 comes to mind. You can purchase many different sizes and weight to strength is un-comparable. Look up Aircraft Spruce or Wicks for the sizes available for use.

Hope this helps

Fixit

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#12

Re: EMT VS Rigid

10/25/2012 7:56 AM

Is EMT too heavy to protect 4 thwn conductors from a bush hog? no it isn't. Is it too heavy to use for a clothes hanger in your car? yes. It's hard if you are a tinkerer, but a friendly relationship with a large metal distribution company is a great way to talk to people with broad materials knowledge. They will require you to participate, with details, as opposed to a forum like this. There are free strength calculators like

http://www.engineersedge.com/beam_bending/beam_bending13.htm. There are countless posts on CR4 that relate to your question, do a search that more specifically addresses your problem. Lots of people will say call an engineer. I would say, be an engineer, and figure it out. GL

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#13

Re: EMT VS Rigid

10/25/2012 8:56 AM

Aluminum....

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#15

Re: EMT VS Rigid

10/25/2012 9:33 AM

"Inbetweenium"?

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#17

Re: EMT VS Rigid

10/25/2012 11:12 AM

I presume you are talking about electrical conduit.If so, IMT is recognized as equal to Rigid in most situations, but is much lighter.It is a higher strength alloy than Rigid, so can be thinner for same strength.The ID is slightly larger, but the OD is the same as Rigid.

Unless local authorities having jurisdiction disapprove, it can be used wherever Rigid would be used.

Check with your local inspector.

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#21

Re: EMT VS Rigid

10/27/2012 9:48 PM

"These dam- acronyms are getting out of hand, and they should be stopped ASAP!"

---Unknown Navy Admiral

DILLIGAF?

BOHICA?

BA 1100 N?

ID TEN ERROR?

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#23
In reply to #21

Re: EMT VS Rigid

11/02/2012 9:04 AM

EMT is the common name for electrical metalic tubing and is also called thinwall conduit or just thinwall. Rigid usually refers to rigid metal conduit which has same outside diameter as "iron pipe" (gas pipe, schedule 40, schedule 80, I don't know why they refer to it as iron pipe such as IPT[iron pipe thread] since it is almost always made of steel, not iron) but a thinner wall than schedule 40. I have used IMC (from a local electrical supplier who calls it intermediate metal conduit) which has same outside diameter as rigid but even thinner wall.

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