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Old 11-21-2007, 05:55 PM   #1
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lvl microllams


I had an addition put on and the contractor used 13/4 x 8 microllams spaced 12" on center, spanning 189". My question is this. Can I drill a 3/4" hole thru this beam to run electrical wires through?

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Old 11-21-2007, 05:58 PM   #2
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lvl microllams


Should not be a problem, ask your GC to be sure.
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Old 11-21-2007, 07:50 PM   #3
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lvl microllams


I would check... But usually microlams are not supposed to be drilled. I am assuming he used these as joists? Used these to span a greater distance with smaller members? Being that they are only joists it is much more likely to be allowed but still should be checked with the GC and/or the local building inspector.
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Old 11-21-2007, 09:20 PM   #4
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lvl microllams


Quote:
Originally Posted by robertcdf View Post
I would check... But usually microlams are not supposed to be drilled. I am assuming he used these as joists? Used these to span a greater distance with smaller members? Being that they are only joists it is much more likely to be allowed but still should be checked with the GC and/or the local building inspector.
I agree, that since it sounds like they are basically just used a floor joists from the description, there should be no problem. If they were used in a true "beam" situation, they could not be penetrated.

Even in this seemingly "overkill" situation, you are right, best to get the answer from the inspector; his opinion is the only one that matters.
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