Toilet Retrofit (long)
Posted by Jim on September 27, 2002 at 10:33:14:
I'm renovating my half bathroom and am trying to determine if I will have a compatibility problem with a 1.6GPF toilet and the existing plumbing. The rough-in is 14", so I anticipate using the Toto Carrollton (comments?) *BUT*, the exiting waste line after the closet bend is 5" copper sloped at about 0.5-0.75" per foot (total run is probably 8-10') until it gets to the soil stack. Will a 1.6 GPF toilet work OK with large diameter copper? If not, I'll replumb with smaller PVC, change the rough in and use the Toto Dartmouth (any comments on that one?)...but I'm happy to avoid those modifications.

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