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jennysjetta

What main sewer pipe to choose and what slope is OK?

jennysjetta
14 years ago

After umpteen estimates I'm still trying to figure out an affordbale way to get tied into the sewer.

My latest estimate for a gravity run calls for 250 feet of 4" SDR-35 pipe sloped at 1/4" per foot ($10,000). Unfortunately, based on the county's measurements, this will put us below our tie-in point. The county said using 1/8" per foot drop would work but the contractor doesn't think that's enough slope for a long run. The run is J-shaped with the long straight part of the J being about 180 feet. Otherwise we have to use a pump. Am I asking for trouble with the lesser slope on a long, straight run? Any other alternatives?

Also, is one type of pipe better than another? SDR-35 is allowed, contractor prefers SDR-26 because it won't deform at deeper depths (12 feet). Are any types of connectorts (glued vs. rubber seals) preferred?

I don't want to cut corners and have to do this again. The whole house and existing septic connection is cast iron but I can't afford to go that route.

Thanks. I wish this saga would end!

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