2026-05-09 18:51 UTC
@amperage1963@poa.st a plumber's idea of structural engineering
when you pass something through a joist, it needs to go through the middle. putting a (reasonably sized) hole in the middle of a joist barely reduces its strength at all, whereas notching the top or bottom makes it dramatically weaker
in this case I would estimate the notched joists are about 40% as strong as they were before
Replies (1)
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@MCMLXVIIOTG@nicecrew.digital 2026-05-09 20:35
Ugh. It's bad enough to see a notch, but there's a whole series of them?!? That wire passing so very close to the floor (IIRC) is about as bad as a notch too. And because nails exist, I'm pretty sure code says mechanical protection is required.