Greetings! I am building my first home and the septic and drain field are going in next week. I need to stub a drain line through my basement wall and had a few questions. I live in mid Michigan and am wondering, how deep do I burry the stub in the wall? And when I stub through the wall, should I slope it or put it in level? I’m not sure if the following is relevant or not but my basement walls are 9 ft tall and about 3 ft of the wall is above ground, I have a sewage crock in the basement for the bathroom and laundry.

Thanks,

Nate

the tank installer will set the tank at whatever depth they need it to be at.
the inlet hole in the tank will determine how deep the pipe is under the ground.
it doesn't need to be below the frost line as it is not subject to freezing.
you do want a slope in the pipe from the house to the tank.
ask the installer if they can put a cleanout that extends a few inches above ground just outside the foundation wall.

Quote

..... ask the installer if they can put a cleanout that extends a few inches above ground just outside the foundation wall.

BE CERTAIN the installer leaves a CO near the foundation wall.

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638