bet3z
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We've always had problems with our master bath drains. They're slow and clog easily. I always figured that it was the galvanized drain pipe inner diameter slowly shrinking from 60 years of use. Some repair work I'd done previously seemed to confirm this. Well, that may have been part of the issue, but not the whole issue.
I'm remodeling the bathroom, and figured I might as well replace the old pipes with PVC while I had everything apart. I got the old pipes out, and got the PVC dry fitted. I'm trying to fine tune everything and get the pitch right, and I'm noticing that the holes cut in the floor joists do not permit proper pitch of the tub drain. For most of the run (about 5 out of the 7 feet or so), the best I can do with the current holes is dead even - no pitch at all. The problem is the joists. They have sagged, except for the doubled joist in the center of the bathroom.
The way I see it, I have three real options:
1. Turn a couple of the holes into notches or otherwise enlarge them. The (approx 2" diameter) holes are about 1/2" down from the top of the 2x8 joists anyway, so I don't know that there would be much harm in cutting that out. I'd rather not do it, because I'm not sure of that.
2. Reduce the 1 1/2" tub drain pipe to 1 1/4" to give myself more room. It would go back to 1 1/2" after it turns the corner and starts toward the sink drain. I figure that with the buildup in the old pipes, I probably effectively had 1 1/4" pipes anyway.
3. Glue it up and hope that the slicker PVC and lack of buildup on the new pipes makes at least some improvement.
Any thoughts?
Thanks.
I'm remodeling the bathroom, and figured I might as well replace the old pipes with PVC while I had everything apart. I got the old pipes out, and got the PVC dry fitted. I'm trying to fine tune everything and get the pitch right, and I'm noticing that the holes cut in the floor joists do not permit proper pitch of the tub drain. For most of the run (about 5 out of the 7 feet or so), the best I can do with the current holes is dead even - no pitch at all. The problem is the joists. They have sagged, except for the doubled joist in the center of the bathroom.
The way I see it, I have three real options:
1. Turn a couple of the holes into notches or otherwise enlarge them. The (approx 2" diameter) holes are about 1/2" down from the top of the 2x8 joists anyway, so I don't know that there would be much harm in cutting that out. I'd rather not do it, because I'm not sure of that.
2. Reduce the 1 1/2" tub drain pipe to 1 1/4" to give myself more room. It would go back to 1 1/2" after it turns the corner and starts toward the sink drain. I figure that with the buildup in the old pipes, I probably effectively had 1 1/4" pipes anyway.
3. Glue it up and hope that the slicker PVC and lack of buildup on the new pipes makes at least some improvement.
Any thoughts?
Thanks.