I’m installing a new main sewer line to my septic tank (due to remodel) and the new line needs to take a couple of turns to meet the tank. I have two concerns, which are, what should I be using to make the 90-degree turn and should I be running a 1/4 †or 1/8’ drop with the 4†pipe?
The new line is 4†PVC and follows this route:
- Exits side of house (3 feet)
- 90 degree turn
- Straight run (30 feet)
- 45 degree turn
- Straight run to septic tank (20 feet)
Thanks for your help.
-John M
Replies
Do you have to stay close to the house for that first 30 ft? If not, how about this?........on the 3 ft stub coming out of the house, put a 45, run about 10 ft and turn another 45. Now you've made your 90 with a much larger radius. Run parallel to the house about 30 ft, then turn 45 and run another 10 ft to the septic tank. If you ever have to run a sewer rod through the pipe, it'll be easier to get past 3-45's than a 90 and a 45. Use a minimum of 1/4" per ft slope, but no more than 1/2" per ft.
Edited 10/1/2002 7:54:34 PM ET by allaround
you need to do away with the 90 and try to go from three feet staight to tank. also watch out for you turn for every amount( i cannot remember) of turns you must have a cleanout. The 90 must be a sweep 90 not a vent 90