Need some sewer line help

[Hillfarmer]

SDR 35 and Sch 40 are usually the two alternatives. I agree with EddieW if you use fittings use the same schedule as the pipe. You may want to ask the utility if they want to inspect prior to closing the ditch and put a Y and 45 for a clean out at your house and at the point of connection to the city system. Good luck

 

[Dirthog]

Most areas around here they require sch35 pipe also you will need a clean out and a vent right at the house along with a clean out at least every 100ft and maybe closer that that depending on there spec and DEP. There will also have to be a inspection port right where your line connects to the main. In the 3 county area I work in i have never saw any sch 40 pipe used. Also the pipe has to be green in color!! That is state wide I believe because when we run the camera in the pipe to check for leakage or breaks all you get with white is a glare think of a bad snow storm.

 

[CurlyDave]

I have heard the 1/4" per foot slope (which works out to 1.2 degrees) also, but can tell you from experience that I lived for 35 years in a house where we had a 150' sewer line which followed the contour of the downhill slope to the main sewer.

The slope varied from plumb to 1/4" per foot, with about 60' at ~35 degrees. Some cast steel sections, some ABS plastic.

The only problem we ever had in that entire time was a root plug in the county-maintained section.

I used to think slope mattered, and bought into the liquid outrunning the solids story, but after that experience, I don't think matters very much as long as it is downhill.

The real reason is that it is humid in the sewer pipe and nothing ever dries out enough to block the water from the next flush. Running the clothes washer dumps a lot of soapy water down the pipe which flushes stuff out.

 

[Dusty1]

Around here septic systems call for a mininum fall of 1/8" per foot, and there is no max specification. Personally, I'd rather go steeper than too shallow.

 

[Freds]

Thanks for the additional info guys. My email notification must have quit working...
It started out 1/4" in 4' pitch, but then it got a little steeper. Around 3/4 to 1" in 4'. I think I'll be OK. And I did use 2-45s to step it down when I came to the driveway. It finished 38" below grade, which should give me plenty of drop when it comes time to run it to the road where they'll be 8-1/2' deep. I was pretty happy with that depth considering the ground was falling away. I'll put my cleanout in at that time. Right now I just capped the pipe (not glued of course) and set a 4x4 post in front of it cut flush with the ground. That should give me a good surface to dig against when it comes time to find it and trench again.
The guy at the town hardware store said everyone runs 4" drain for sewer around here, the kind with the flared ends like drain tile. When the time comes for the line up to the road I'll double check what the township wants me to use, or if I can even do that part myself, but the line under my new driveway is done anyway

I just had time for one pic with my cell phone.