How much should a sewer line drop per foot?
Answers:
Sewer lines should drop 1/4" foot.
Other answers:
Call your local county inspection office because different areas have different requirements.
Call your local county inspection office because different areas have different requirements.
3 in.
Mine is (4") set 1" every 8' . My (6") long drain 120' was set 1" drop per 10'
hope this gives you some reference. I have no problems over the 20 years
the amount of slope depends on the size of the drain pipe..larger the pipe less slope.....on a norm, 4" drain line slopes 1/8" per foot but u can use larger pipe which would change this......
lic. gen. contractor
Depending on where you live, check your local codes.
3" and smaller should be 1/4" per foot, 4" and larger should be 1/8" per foot, 8" and larger can be 1/16" per foot or an approved velocity of 2 feet per second. This AR state code.
Hope it helps.
Per the International Mechanical Code, for 3" and less 1/4" per foot, above 3" is 1/8" per foot but local codes can be more restrictive.