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Posted by Michael Bulatovich on March 26, 2007, 11:45 am
show/hide quoted text
> bobprokop@yahoo.com wrote:
>> I've got a plumber (who I really trust) coming out tomorrow to
>> temporarily cut into one of my main cast iron waste stacks. Reason:
>> there is a crack in the foundation right behind the stack that is
>> going to be treated tomorrow with epoxy injection -- and the stack is
>> in the way.
>> Once the crack in the foundation has been treated, the plumber is
>> going to replace the cut-out section of cast iron pipe with PVC.
>> My worries: the waste stack runs all the way up to the 2nd floor (and
>> out the roof through the attic, so technically through to the 3rd
>> floor). Everything I read says you MUST support the stack when making
>> a cut like this.
>> I asked my plumber (very reputable company and he has done alot of
>> work in this house for me -- all of which has been good) if he would
>> need to support the pipe before making the cut. He said "no" -- but if
>> when he began to cut he though it needed it, he would support it from
>> below (in the basement, where he'll be cutting).
>> I am worried about this. It's a beautiful 1930s Tudor-revival era
>> brick & mortar home -- built like a tank -- and I don't want to have
>> all kinds of damage to the plumbing connections in the walls that
>> connect to this waste stack when it gets cut (I hesitated even doing
>> this, but the crack in the foundation is something that appears to
>> have needed attention for a long time -- it gets water, although I've
>> fixed most of that problem from the outside).
>> Help. What do I tell my plumber? Do I insist that he install a brace?
>> Does it need to be a permanent brace? I can't imagine how tying in PVC
>> w/neoprene gaskets is going to support the weight of this stack. How
>> does this work? Should I be worried -- or trust this guy (who has 40
>> years of experience in this area, working on these types of homes)?
>> Thanks for any guidance you can provide!
> If not supported, the burden of holding the waste stack from dropping
> would be the connections of the drain pipes from sinks, tubs, and toilets
> to the waste stack. Unless there is some strapping somewhere holding the
> waste stack, I would be concerned too.
In older buildings they are usually supported at each floor by some steel
welded to the side and bearing in the floor framing.
It's fairly easy to confirm from below.
--
MichaelB
www.michaelbulatovich.ca
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Posted by bobprokop on March 26, 2007, 8:51 pm
show/hide quoted text
> > bobpro...@yahoo.com wrote:
> >> I've got a plumber (who I really trust) coming out tomorrow to
> >> temporarily cut into one of my main cast iron waste stacks. Reason:
> >> there is a crack in the foundation right behind the stack that is
> >> going to be treated tomorrow with epoxy injection -- and the stack is
> >> in the way.
> >> Once the crack in the foundation has been treated, the plumber is
> >> going to replace the cut-out section of cast iron pipe with PVC.
> >> My worries: the waste stack runs all the way up to the 2nd floor (and
> >> out the roof through the attic, so technically through to the 3rd
> >> floor). Everything I read says you MUST support the stack when making
> >> a cut like this.
> >> I asked my plumber (very reputable company and he has done alot of
> >> work in this house for me -- all of which has been good) if he would
> >> need to support the pipe before making the cut. He said "no" -- but if
> >> when he began to cut he though it needed it, he would support it from
> >> below (in the basement, where he'll be cutting).
> >> I am worried about this. It's a beautiful 1930s Tudor-revival era
> >> brick & mortar home -- built like a tank -- and I don't want to have
> >> all kinds of damage to the plumbing connections in the walls that
> >> connect to this waste stack when it gets cut (I hesitated even doing
> >> this, but the crack in the foundation is something that appears to
> >> have needed attention for a long time -- it gets water, although I've
> >> fixed most of that problem from the outside).
> >> Help. What do I tell my plumber? Do I insist that he install a brace?
> >> Does it need to be a permanent brace? I can't imagine how tying in PVC
> >> w/neoprene gaskets is going to support the weight of this stack. How
> >> does this work? Should I be worried -- or trust this guy (who has 40
> >> years of experience in this area, working on these types of homes)?
> >> Thanks for any guidance you can provide!
> > If not supported, the burden of holding the waste stack from dropping
> > would be the connections of the drain pipes from sinks, tubs, and toilets
> > to the waste stack. Unless there is some strapping somewhere holding the
> > waste stack, I would be concerned too.
> In older buildings they are usually supported at each floor by some steel
> welded to the side and bearing in the floor framing.
> It's fairly easy to confirm from below.
> --
> MichaelBwww.michaelbulatovich.ca
Hi everyone -- thanks for the replies.
Well, the deed is done. The plumber came over early, I asked him to
please brace the pipe and he didn't object. He used steel strapping
and a masonry anchor -- but still insisted it wasn't going to move. He
decided to cut with a grinder/saw first, then finish with a Sawzall.
The cuts were made -- and the pipe never moved even a hair. Stood
firm. PVC with a new, lower, clean-out was soon in place with neoprene
gaskets/steel bands.
So, I guess this pipe was indeed supported at each level -- but those
supports were not visible from the basement (finished ceiling).
Plumber also said that since the sink, tub, and toilet of the 2nd
floor bath tie into this stack -- all of those wyes are supported by
the floor joists as well.
Everything seems fine so far. This was complete at 11:30am this
morning (its now nearly 9pm EST) -- so I'm assuming I don't have to
worry about the pipe crashing through all levels and taking everything
with it.
These homes were built by German Catholics just before WWII -- they
are built like tanks, and I guess the plumber just knew that the pipe
was properly supported at each level.
Still a scary thought, though. But the cracks have been treated
(reason for cutting the pipe in the first place), and the replacement
PVC seems to be working fine.
Can I stop worrying now?
;-)
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>> I've got a plumber (who I really trust) coming out tomorrow to
>> temporarily cut into one of my main cast iron waste stacks. Reason:
>> there is a crack in the foundation right behind the stack that is
>> going to be treated tomorrow with epoxy injection -- and the stack is
>> in the way.
>> Once the crack in the foundation has been treated, the plumber is
>> going to replace the cut-out section of cast iron pipe with PVC.
>> My worries: the waste stack runs all the way up to the 2nd floor (and
>> out the roof through the attic, so technically through to the 3rd
>> floor). Everything I read says you MUST support the stack when making
>> a cut like this.
>> I asked my plumber (very reputable company and he has done alot of
>> work in this house for me -- all of which has been good) if he would
>> need to support the pipe before making the cut. He said "no" -- but if
>> when he began to cut he though it needed it, he would support it from
>> below (in the basement, where he'll be cutting).
>> I am worried about this. It's a beautiful 1930s Tudor-revival era
>> brick & mortar home -- built like a tank -- and I don't want to have
>> all kinds of damage to the plumbing connections in the walls that
>> connect to this waste stack when it gets cut (I hesitated even doing
>> this, but the crack in the foundation is something that appears to
>> have needed attention for a long time -- it gets water, although I've
>> fixed most of that problem from the outside).
>> Help. What do I tell my plumber? Do I insist that he install a brace?
>> Does it need to be a permanent brace? I can't imagine how tying in PVC
>> w/neoprene gaskets is going to support the weight of this stack. How
>> does this work? Should I be worried -- or trust this guy (who has 40
>> years of experience in this area, working on these types of homes)?
>> Thanks for any guidance you can provide!
> If not supported, the burden of holding the waste stack from dropping
> would be the connections of the drain pipes from sinks, tubs, and toilets
> to the waste stack. Unless there is some strapping somewhere holding the
> waste stack, I would be concerned too.