Electrician mistake


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Old 11-22-22, 08:41 AM
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Electrician mistake

I was having a new light run and for some reason they didn't cut the drywall back enough for them to drill a proper hole. Instead they drilled 2 1" holes very close to the edge. This same pattern was repeated in 6 straight joists, which is roughly half the room. The joists support my master bathroom and master closet. These holes are in some cases around 1/4" from the joist edge and all are no more than 1/2" from the edge. I know it is a code issue but I don't know if that code is strictly to prevent nails/screws going into the electrical or if they have now created a structural issue. I probably wouldn't be worried about a single beam, but again, this is 6 beams from.

Any idea how concerned I should be?
 

Last edited by PJmax; 11-22-22 at 07:43 PM. Reason: picture corrected
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Old 11-22-22, 09:58 AM
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It's not a structural issue as the holes fall withing the guidelines for drilling holes and notching joists. Such a hole would not be allowed in the middle of the joist span, but is OK near the end. Actually, holes are supposed to be at least 2" from the edge of the joist, but those holes are going to act more like shallow notches, which are allowed there. There should be narrow protector plates added at each location before the ceiling is fixed to prevent a nail or screw from piercing the cable.
 
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Old 11-22-22, 10:30 AM
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Welcome to the forums.

Picture restored to original orientation.
 

Last edited by PJmax; 11-22-22 at 07:57 PM.
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Old 11-22-22, 10:36 AM
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Thank you but I am very aware of the difference between a joist and a wall stud. That is a 2x10 floor joist and was correctly orientated it is just zoomed in so the holes are visible for anyone looking. below is a pic at distance showing them making the mistake. Please change it back.



 

Last edited by humannewman; 11-22-22 at 10:42 AM. Reason: Adding image
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Old 11-22-22, 10:39 AM
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CarbideTipped...can you please clarify by what you mean that the holes fall within the guidelines of drilling holes? From what I can tell the code is 2" min off joist edge. Also note, this is not the end of a joist, this is about 5' off the end of the joist, not quite the center of the room, but closer to center than end.
 
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Old 11-22-22, 01:21 PM
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2x10 joists can be notched up to 1 1/2 inches deep provided the notches are not in the center third of the span. A hole closer than 2" to the edge of the joist is essentially a notch. (it's less damaging than a notch, so it can be treated as a notch)

I just estimated from your photo that the holes did not get farther than 1 1/2 inch from the edge.

If the holes are in the center third of the span, then I think your concerns are reasonable.
 
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Old 11-22-22, 07:58 PM
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Old 11-23-22, 05:31 AM
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Looks like you have I joist. If it is actually 2x10, than disregard this. I joist is more generous about holes than 2x lumber. But, notching is not allowed.
Each manufacturer has slightly different specification, but below is what one of the manufacturer recommends.
Basically, the hole you have is not ideal, but allowed.



 
 

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