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Discussion Starter · #1 ·
I have a floor joist I want to drill through for some electrical wire. There is already an existing hole drilled for some current wiring that came with the house. The floor joist is a particle board type nailed together. I attached a photo of the joist.





marly
 

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Discussion Starter · #3 ·
There should be holes inteh joist ready to be knocked out with a hammer.
I'm not talking about the I-beam floor joists with the knockouts. I'm talking about the one that is nailed together in the picture. It's made out of what looks like partical board.

marly
 

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Discussion Starter · #4 ·
I guess the correct name for the floor joist is, "Laminated Strand Lumber". There are two of them nailed together.

marly
 

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Discussion Starter · #6 ·
Measure the two LVL's, if 1-32/4" each, that is what they are, pp. 23: http://imgs.ebuild.com/xCat/ebuildWebB/15?ObjectID=32941&Variant=Original

If they measure 1-1/8" or 1-1/4", they may just be rim boards; http://www.ilevel.com/literature/TJ-4000.pdf (I hope not....)

Gary
They measure 1-3/4" (assume you meant 1-3/4 instead of 1-32/4"). They'are also used exactly how they're used in the picture on pp. 23 in the link you gave. They're buit around the stairs going into the basement.

I also have another joist similar that measure 3-1/2" that's labeled iLevel Truss Joist.

marly
 

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Correct, I usually spell check myself, but have been sick at home today. That is my excuse and I'm sticking by it.... LOL.

Follow the guide or find the U.S. version on-line.....

Gary
 

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Discussion Starter · #8 ·
Correct, I usually spell check myself, but have been sick at home today. That is my excuse and I'm sticking by it.... LOL.

Follow the guide or find the U.S. version on-line.....

Gary
I attached another picture. I found on the back side it says, "Trus Joist" and it also says "hole zone". I assume that's where it's ok to drill.


 

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