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Old 04-20-2011, 08:29 PM   #1
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wood stove means modify floor joist


I want to install a new wood stove. But where I want the pipe to go through the second story floor requires me to cut a floor joist. I want to know if I can do that and if so how? My floor joists span from the outside wall to a beam 12 foot. My joists are at 16 inch centers. If I label the first effected joist as #0 the next as #16 and lastly as #32, I want to cut out 12 inches from #16. The section to be cut will be at 2 foot to the 3 foot mark on the joist from the wall. This leaves 9 foot hanging of #16 to the support beam. Can I just header #16 to #0 across to #32? This is the space I will be putting the ceiling support box for the double wall stove pipe to the stove.

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Old 04-20-2011, 09:41 PM   #2
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wood stove means modify floor joist


Can't you jog the pipe next to the joist without cutting it?
If not, you'll have to create the same type of opening as when a staircase is put in.
Do a goggle on "staircase framing" and you'll see what I mean.
Ron

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Old 04-20-2011, 10:07 PM   #3
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wood stove means modify floor joist


thanks for your response. I looked at the staircase framing (google) but all that I could find was when they are supported by an upright to the downstair floor. I could not find any on an open floor plan downstairs without a supporting the staircase where the joists were headered. Do you know of a special web site describing a staircase without support to the bottom floor. Thanks again for any help you can provide me. I just need to know that it would work to do a header across from the first joist to the third, without resulting in sagging at the second joist.
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Old 04-20-2011, 10:25 PM   #4
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wood stove means modify floor joist


Yes that is the correct way to do it. Just make a header. (a sandwich of 2 by X and plywood glued and screwed) Add a hanger if you can. (x = floor joist height.)

Last edited by UFoPilot; 04-20-2011 at 10:28 PM.
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