Boaz, Following from ...
Published by Harry Beyer, Principal Water Engineer
Boaz,
Following from previous message, have a look at manufacturer's guidelines, practice manuals and standard drawings for sewers ... A good pipe supplier should also be able to advise you on how best to clean the pipeline. E.g. See section 4.7 ...
https://www.polypipe.com/sites/default/files/ridgistorm_xl_technical_guide_0.pdf