Re: Hole Diameter for running cable

["Robert L Bass" <sales@xxxxxxxxxxxxxxxxxxxxx>]

> I need to run some cabling in my basement before I finish it. Right now I
> have 2x10s supporting the first floor. What is the maximum diameter hole
> that I can drill to run cable through? How about the 2x4 studs for
> walling? Are there any gotchas for code requirements?

For non-bearing walls the maximum hole size is 60% of the stud width.
If it's a load bearing walls, do not exceed 40% of stud width.

When drilling joists, keep the hole less than 1/3 the height of the
joist.  Also, it's best to keep the holes near the center rather than
the ends of the joists.  Center the hole in the joist and stay better
than 2" from the top and bottom of the joist.  You can make multiple,
small holes in a joist.  Sometimes this is better than a single, large
hole.
--

Regards,
Robert L Bass

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