IMC - intermediate metal conduit
RGC- rigid galvanized conduit
Robie - AJ4F
> On Feb 20, 2017, at 18:24, Steve Maki <lists@oakcom.org> wrote:
>
> On 2/20/2017 19:07 PM, K7LXC--- via TowerTalk wrote:
>
>>> Thanks, but my question was not about tubing or masts. My question was
>> about GRC vs. IMC for mounting pipes.
>
>> Please elucidate what GRC and IMC are. I was unable to google either
>> of them and get the answer.
>
> What he's calling GRC is usually schedule 40 galvanized (either hot dipped or
> electro-galvanized as you find in electrical supply stores).
>
> The IMC is a thinner walled but stronger material that fencing supply places
> have been touting and selling for their top rail material. It's very good -
> we use it routinely on commercial sites when hot dipped galvanizing is not
> specifically specified :-) It's less expensive, so...why not?
>
> -Steve K8LX
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