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Old 07-25-2013, 09:14 PM   #1
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Floor Joist Cut


Hi - a new member...so let me know if my explanation is unclear.
We recently purchased a small home. Prior to placing our offer, we discovered a floor joist had been cut completely through to accommodate the toilet waste line. This is causing the floor to sag in the bathroom in the floor above.

During a subsequent home inspection, the inspector was not too concerned about finding an appropriate fix.

However, I am stumped on how to fix this. We are unable to "box in the neighboring floor joists...as the waste line then runs parallel to the next floor joist.

Due to the location of the cut floor joist, placing a support post in the basement is not a preferred option.

Any suggestions will be welcome.
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Old 07-25-2013, 09:24 PM   #2
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Floor Joist Cut


As long as that one behind the waste drain is solid from the foundation wall to the beam in the middle of the basement, you are fine. My guess is that originally the waste was in the middle of the two joists, but somewhere down the road in a remodel job, whoever put up that PVC, decided to notch out that joist.

I would just place another in front of that PVC line and be done with it, as they should have done, when they did that work.

I have a picture somewhere of how mine is, and it is the same way, but not load bearing, because as in your case, the one behind the pipe actually physically carries the load (I checked with a GC to make sure, so I know that mine that is notched was not a load bearing beam, but you need to have yours checked out), not the one in the same spot as yours.

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Old 07-26-2013, 06:03 AM   #3
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Floor Joist Cut


Looks like there may be room on the back side of that drain to be able to at least sister in a piece that's narrower then the original floor joist once the old joist has been lifted so the floors level.
If I was buying this house I would make an allowance for the cost of replacing those old steel pipes when making an offer. At some point there going to close up on the insides and reduce flow, there going to leak, and the water is going to leave rust stains on your fixtures even if you add a water softener.
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Old 07-26-2013, 07:31 AM   #4
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Floor Joist Cut


Joe, I would just run it in front of it. If as I mentioned in my post, that they framed the floor correct, there should be a joist right behind that PVC, that is there to carry the load. The other is there for in case either the front or back one gets cut, so one or the other will carry the load.

Usually they try to go between them for the bath, but just like the OP, in my case, they had the Drum trap cut into that same joist, but still have the one other joist actually physically carrying the load, so no worry.
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Old 07-26-2013, 12:40 PM   #5
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Floor Joist Cut


Thanks for the advice guys. I will place a new joist to the one side of the toilet drain. If there is room, I may also add a smaller board behind/above the toilet flange.

Regarding steel water pipes...yup...this is on our list of "things to do". We are already experiencing lost water pressure and rust working loose and clogging our faucets. I will be replacing the steel pipes with copper. (no experience yet with PEX.)
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Old 07-26-2013, 12:59 PM   #6
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Floor Joist Cut


It looks like the toilet flange is leaking. Replace the wax ring.
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Old 07-26-2013, 01:04 PM   #7
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Thanks Seattle2k...
Once we get the floor back to level, we will be replacing the toilet - as it is an older model using "way too much water" for each flush.
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Old 07-26-2013, 01:04 PM   #8
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Quote:
Originally Posted by Seattle2k
It looks like the toilet flange is leaking. Replace the wax ring.
Probably from the old one they replaced that PVc with. Too dry for fresh leakage.

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