I going to run 1/2" EMT conduit on the bottom of a joist. The standard straps I have are too wide to get both nails/screws in. I would prefer to run the conduit down the center of the joist. I wouldn't be able to do this with a single nail/screw strap. I was thinking of using a thick metal tape with holes every inch or so in it. I have some holding up my gas line. Do they still make it? If so, what is it called? Or could I used plastic zip lock ties instead?
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Some call it plumbers tape or strap, they do make single hole straps that would look better and only take 1 screw, I know looks under the house don't matter but I have had inspections where they wanted listed straps. – Ed Beal Sep 20 '18 at 16:42
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The bottom of a joist is not a particularly well guarded place to run EMT, though it is fairly tough. Could you add a couple slight bends and have it ride along the side of the joist? – Harper Sep 20 '18 at 17:48
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It is called perforated strapping and it comes in steel or a plastic material. That would be OK to use.
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Try using a minerallac strap. I really not much for perforated strapping. See image although it is legal.
Hope this helps.
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What about something like this Conduit Hanger
