Emt fastening

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Praedatus1

Praedatus1

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Portland, Oregon
Alright guys, I've got a question and I'm tired of arguing with my boss. We've got a job, and he is having the guys run conduit between boxes, through metal studs. The boxes are 20" off the floor, and he is running the conduit up to 48" and 90* through the metal stud holes. He is NOT strapping, saying that 'code says the holes in the studs are a securing means'. PLEASE tell me I'm not crazy, I've been securing the conduits within 3' like I was taught, before they 90 through the studs. Isn't that what the law requires?
 
Re: Emt fastening

358.30(B) Supports. Horizontal runs of EMT supported by openings through framing members at intervals not greater than 3 m (10 ft) and securely fastened within 900 mm (3 ft) of termination points shall be permitted.
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Re: Emt fastening

Yup, usually the EMT is run vertical from the box then 90 thru hole, horizontal, then 90 vertical to next box. The verticals get the support within 3' of box.
 
Re: Emt fastening

Bob hit the hail on the head. You need to have it secured within 3' of the box. The horizontal run through the hole(s) is fine.
 
Re: Emt fastening

quote:
358.30(B) Supports. Horizontal runs of EMT supported by openings through framing members at intervals not greater than 3 m (10 ft) and securely fastened within 900 mm (3 ft) of termination points shall be permitted.


Does that mean the conduit has to be in contact with the bottom of the opening in the metal stud to be "supported".

Also do you still have to be a 1 1/4 inch from the nearest edge of the framing member. (300.4)
 
Re: Emt fastening

Also do you still have to be a 1 1/4 inch from the nearest edge of the framing member. (300.4)
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The answer is no. Take a look at 300.4(D) Exception No. 1.
 
Re: Emt fastening

I guess emt would not have to be 1 1/4 back, if it can be used in notches with out protection
 
Re: Emt fastening

Originally posted by russ:
I guess emt would not have to be 1 1/4 back, if it can be used in notches with out protection
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Yeah, that's right. It is a little puzzling, since the same screws that go through the steel studs will go through EMT with equal ease.

Ran some EMT on top of some bar joists a while back, in the corrugation of the roof tin. Big mistake. Roofer's big long screws that they secure the styrofoam on the roof with hit the EMT in several places. Lesson learned... I won't choose that particular location to run EMT in for the future.
 
Re: Emt fastening

Originally posted by apauling:
nail guns go thru nail plates, doesn't mean it still isn't safer.
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Sometimes they do; other times, the nail curls around almost into a full circle when it hits the plate.
 
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