Boaz, Following from ...

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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