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Old 09-17-2010, 04:19 PM   #1
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Acceptable cuts in 2x10 band joist


I need to cut a semi-circle out of 2x10 band joist so I can run conduit up from my first floor (I'm installing coax and network cable). Can I safely cut a 1 inch diameter semi-circle out of the inside edge of the 2x10 or will that ruin the integrity of the board? This cut will fall about center between two joists.

Here's a link to a rough drawing of what I'm talking about in case I can't figure out how to attach the picture to this post. Thanks for any help!
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Acceptable cuts in 2x10 band joist-joist-cut.jpg  


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Old 09-17-2010, 09:29 PM   #2
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You should be fine with that.


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Last edited by BigJim; 09-17-2010 at 09:35 PM. Reason: Old age
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Old 09-17-2010, 09:37 PM   #3
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Originally Posted by jiju1943 View Post
You should be fine with that.
In NY, this would be a rim joist over a sill plate.
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Old 09-18-2010, 12:19 AM   #4
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I doubt you need to use conduit for coax and network cable. If you want to set it up so you can add additional cables later you could just include a pull line with the initial bundle you snake through.
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Old 09-18-2010, 09:56 AM   #5
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The primary things to watch for would be the attachment of something (for example a porch ledger) through the thinned portion of the band joist, or a highly concentrated point load (for example the post supporting one end of a heavily loaded header) applied at that point.

Not likely problems, but still things to keep in mind....
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