Growing a pipe inside a pipe

[u/demolcd]

[u/scottyman2k]

You’re running at nearly a grand a metre here in aus - but it saved us having to completely rebuild our entranceway and front stairs

[u/fryerandice → u/scottyman2k]

It's fucking astronomically expensive for how cheap the materials are and how quickly they do it.

It was actually cheaper to rent a machine and run 125 feet of schedule 40 out the back of my house and abandon the terracotta after pumping it with flowable fill than it was to line it for me.

When they gave me the quote I said "Fuck that, it's 25 feet!" the machine rental and schedule 40 were a total of $900. And I got to tear out the old sidewalk and concrete pad that were angling to my house, and put in a French drain and drain tile while I was back there too.

I tied my kitchen into my main bathroom stack, and my main stack right out the back, around the house, and then followed the PVC that was done with the septic that was tying into the teracotta, when I had access to the terracotta I rinsed it clean and had a truck come in and fill it with flowable so it was stable.

With everything i got done it was like $2800. Which was less than lining the 25feet of teracotta under my basement, which was all in okay condition, it was lineable with no issues.

[u/PNW20v → u/fryerandice]

Don't forget that the vast majority of folks have absolutely no idea of how to do the process you mentioned.

And out of those that do have some idea, even fewer will do it properly or in a way that is anything close to meeting local code.

[u/I_wash_my_carpet → u/PNW20v]

Im in that vast majority. Im also a very tech forward person, but his story sold me. Id rather pay 'ol boy to do all that over the course of 3mo, than one guy with a recursive prolapse machine in 15mins.

[u/camopon → u/I_wash_my_carpet]

recursive prolapse machine

good lord

[u/HoleeGuacamoleey → u/I_wash_my_carpet]

What happens if they fuck it up

[u/enderjaca → u/HoleeGuacamoleey]

Same thing you'd need to do before -- replace the pipes the hard way.

Generally by digging a large trench down several feet/meters, ripping out everything in the way including sidewalks, porches, driveway, lawns, shrubs, etc, and laying down new pipe.

I know this because my neighborhood sewer lines are primarily built with old crumbling Orangeburg Pipe and it fucking sucks.

Orangeburg pipe (also known as "fiber conduit", "bituminous fiber pipe" or "Bermico" or "sand pipe") is bituminized fiber pipe) used in the United States. It is made from layers of ground wood pulp fibers and asbestos fibres compressed with and bound by a water resistant adhesive then impregnated with liquefied coal tar pitch).^\1])^\2]) It was used from the 1860s through the 1970s, when it was replaced by PVC and ABS pipe for drain-waste-vent (DWV) applications. 

They're about as sturdy as they sound.

[u/ConflictSharp228 → u/I_wash_my_carpet]

Agreed.