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It's GOT to be more than that. It's got to be at least a 9 degree slope. All that crap and toilet paper would HAVE to clog up a 2% slope. How can a 2% slope get rid of all the waste? It just doesn't seem possible.

Who has a septic tank? I'll bet you have more than a 2% slope.

It's GOT to be more than that. It's got to be at least a 9 degree slope. All that crap and toilet paper would HAVE to clog up a 2% slope. How can a 2% slope get rid of all the waste? It just doesn't seem possible. Who has a septic tank? I'll bet you have more than a 2% slope.

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Plastic drain pipes are not 100% straight, most have a bit of a bend/warp/curve. But if the run is mostly a drop of .25 inches per foot, it will work out.