I'm no builder, but remember that joists are integral to the structure of the house. I'd make the holes as small as you can get away with, and try to put the holes (vertically) in joist centers.
From my research, there are recommendations on how large the holes and/or notches can be. And if there's more than one hole (for example, another hole or notch elsewhere in that joist) that also counts toward the total. There are other limitations as well (this is just a start!)....so again, please keep your holes centered and as small as possible.
good luck,
-k2 |
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