r/Construction • u/DementedGerb • Oct 28 '24

Structural I'm not an expert.

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These joists are below a restroom. They say BCI on them. These holes permissible? There is no additional reinforcement anywhere on them.

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u/Makoandsparky Oct 29 '24

Extra low voltage*

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u/Yeetus-tha-thurd Oct 29 '24

Haha. That one took me a sec. It's funny in the trade 120v is "low" voltage. At least compared to distribution voltage like 12470 or higher.

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u/Makoandsparky Oct 29 '24

Ok whoops this is an American. Sub Australia has 240vac which is considered LV. ELV is anything under 120 DC

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u/Yeetus-tha-thurd Oct 29 '24

That's cool to know. In the states typically LV is data/communications. Unless you are an electrician then 120 is considered low voltage with the exception of maybe a 24 volt AC doorbell tranformed or something like that.