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Old 04-01-2008, 08:40 PM   #1
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A boring question -


I, as some of you well know, am rewiring my porch. I ran into this today. The horizontal two by four sits in front of another piece of non-dimensional lumber - total depth of the space = 2 3/4 inches. Together they make a nice solid mass that I need to run some wires through. I need to run 2 12/3s and 2 12/2s to a switch - imagine it for the time being.

Since I am trying to measure twice cut once - or not drill anything without thinking about it first, I ask: Is drilling through it totally a bad idea? Against code? Morally corrupt?

Rant - I've had a *************** of a time figuring out how the genius before me wired the exterior wall of the porch. Found out today - they just ran the wire outside and down to the basement - Is it possible that all the coats of paint ameliorated the fact that it wasn't outdoor rated cable? Lazy -hole.
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Last edited by Leah Frances; 04-01-2008 at 08:41 PM. Reason: To add apology to the forum for using pg-13 language - sorry.
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Old 04-01-2008, 10:43 PM   #2
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A boring question -


Leah, drill it.

I've actually had paint that was holding up a small piece of moulding. As it has been said: drywall conceals a multitude of sins. Sometimes, so does paint!

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Old 04-01-2008, 11:28 PM   #3
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A boring question -


If you drill in the center 1/3 of a horizontal beam, it'll have the least effect on its strength.

The effect of a load on a horizontal beam is to pull the bottom apart, and mash the top together. It doesn't really affect the middle much at all. Consider the 'I-beam' type of manufactured joist. Thick on the top and bottom, and thin plywood in the middle.

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Old 04-02-2008, 12:39 AM   #4
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A boring question -


If you drill it you won't be recessed the required 1 1/4 inches form the back side. I would notch it and nail plate it. Simple.
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Old 04-02-2008, 09:49 AM   #5
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A boring question -


In this case, fiberboard covers a multitude of sins. I'm replacing it with drywall inside and hardiplank outside.

I think I'll notch and protect. Thanks for the help. I've got one of my three circuits run. I hope to get the rest of my rough-in done in the next week!
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