Typically, a sewer would pass under the footing if the depth allowed. A septic line would pass through wall as they are much shallower. Here in Michigan our water needs to be 4 ft. deep. So on a full basement thru the wall, crawl space under the footing.
Last night I put a 2 pack of bucket lid mouse traps in my cart, price $9.99
Today log in to order, price $15.99
So much for prime day. Guess I should have order last night.
On the systems I install we drill 1/8 inch hole in the pipe in pump vault or tank. When running it sprays out a little, when pump shuts off it drains the line. A little loss of pump efficiency, but beats frozen line. I am surprised you are getting temperatures that would freeze. Our access lid...
Ok, I've worked on septics for 45 years. Need to drill 1/16 or 1/8 inch hole in the pipe, inside pump tank above the water. It will spit a little effluent when pump is energized. When pump shuts off water drains, hole allows air to follow, so you only drain what is left in pipe. We do a lot...
Get an LB 1 or LB 2. They are great made by lazer alignment. I have a few, these are real work horses. No longer made but can be sourced though pawn shop, Ebay, or market place. The original employees just installed a new battery pack in mine last year. First battery pack lasted close to 30...