cleanout spacing of a sewer line Post date Home › Forums › Sitework › Underground utilities › cleanout spacing of a sewer line This topic has 0 replies, 1 voice, and was last updated 5 years ago by atuter. Viewing 1 post (of 1 total) Author Posts August 30, 2018 at 10:17 am #20 atuterKeymaster does anyone have any idea what is the cleanout spacing for a 4\” sanitary sewer line? i have to calculate this for my change order as a rough order of magnitude Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In → Earthwork