View Full Version : Specicifications on sewer pipes
burroughs
Apr 12, 2007, 12:39 PM
Does anyone know what the minimun allowed sag in a sewer pipe is?
ballengerb1
Apr 12, 2007, 01:16 PM
I guess you are talking about the slope which should be 1/4" per ft.
speedball1
Apr 12, 2007, 04:53 PM
While 1/4" to the foot is the best the absolute minmun fall allowed on a sewer line is 1/8 inch to the foot.
iamgrowler
Apr 12, 2007, 05:02 PM
While 1/4" to the foot is the best the absolute minmun fall allowed on a sewer line is 1/8 inch to the foot.
1/8" grade is only allowed if you increase the pipe by one full pipe size, right?
speedball1
Apr 12, 2007, 05:09 PM
We just "crack the bubble" on all our 4" installations. No complaints over the years as yet. Cheers, Tom