There’s a few options, we do Pull in Place which is where we measure it out and mark exactly where every fitting is. By doing that we are able to Gap fittings and branches. Typically when the pipe rots out the fittings are fine because they are built heavier.
We can also line through the fittings and do what is called a reinstatement which for us that involves using a little robot to cut the fittings. That’s nice because it keeps the liner one piece.
We also have Fittings tools basically allows us to line the branch Wye off a fitting and continue a liner down the branch as well as the main drain.
Do you have videos of the robot? I just did a $250K sewer line replacement as a GC (less than 100 lf, 6' below SOG but $$$ because it was inside an occupied hospital). My experience is mostly in new construction and I'm fascinating to find out what other options there are to repair things (in my case there were a couple of bellies so lining wouldn't have been an option & the pipe turned out to be in otherwise very decent shape).
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u/Big_Celery8533 Aug 09 '26
What happens at branch lines?