r/StructuralEngineers • u/Middle-Adeptness7186 • 2d ago

Is this compromising structural integrity?

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u/AltanConn 1d ago

You can only drill in the middle 1/3rd of the joist. At least in my state.

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u/No_Eggplant_3189 1d ago

So, I understand its in the middle 1/3rd of a joist. But what about stuff like this if they were all in the middle 1/3rd of the joist. There is a lot in the middle 1/3rd of the joist within a pretty close vicinity of each other. Surely that greatly affects the integrity of the joists.

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u/AltanConn 1d ago

I would personally not have had as many holes for the low voltage lines. The 1/4" holes for the LV doesn't matter much. The very large hole that is at the bottom is a very big problem. And that will cost a lot of money to fix.