Re: anyone repair underground water line
Posted by:
say
()
Date: November 15, 2010 10:10PM
Orangeburg Sucks Wrote:
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> For a few years after WWII, they used a substance
> called "Orangeburg", which is basically the same
> stuff that shingles are made. They used it instead
> of the iron pipes for the line that runs to the
> sewer because iron was still in such high demand
> and expensive.
>
> Well, this orangeburg last only 50 years and then
> it starts to buckle, which means backups and
> eventually the sewage backs up into your house. We
> found that out the hard way and had to pay $4200
> to get 35 feet of it dug up in front of our
> house.
>
> The worst thing is that you don't know you have it
> because the outgoing lines are iron, but from
> outside the foundation to the sewage line was
> orangeburg. So when I went under the house, it
> looked like we had cast iron pipes, but only until
> it got out of the house.
>
> Our neighborhood has had several houses have to
> have their lines replaced in the front lawn in the
> last few years. Wish I had known that when we
> bought the house.
Bituminized fiber pipe (orangeburg) was invented in the 1860's but not widely used as sewer pipe until (as you said) after WWII until the early '70s, when PVC came into common usage. Before that it was mainly used as electrical conduit.
Orangeburg (like PVC) is susceptible to pressure deformation. That is why "bedding" it in sand or pea gravel was critical to it's durability. No doubt this wasn't done in many cases...leading to premature failure.
There's no perfect sewer pipe material, even cast iron rots out and is very prone to root intusion. We don't know how long PVC is going to last, the oldest installations are less than 40 years old.
My cast iron sewer line is on it's last legs, and I think I'm going to go with the "pipe bursting" method to replace it. A cone is pulled hydraulically through the old pipe bursting it. At the same time, a new HDPE pipe (better than PVC IMO) is pulled through. It costs more, but instead of digging up your whole yard, all they have to do is dig two small holes....saving your landscaping.