Repairing dime-sized hole in 4" CI pipe

Verdeboy

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• Jul 19, 2007

• #1

That's what I'm up against. The pipe is mostly buried and I'm in the process of building a sub floor. I need a quick repair on this so I can finish the floor tomorrow. It's a horizontal pipe and the hole is in the top. It doesn't leak now, but if there is ever a backup it will surely leak. Any ideas?

 

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Geniescience

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• Jul 19, 2007

• #2

PC-7 glues metal to metal. You could bend a bit of lead or aluminum into shape and glue it on.

David

 

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GrumpyPlumber

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• Jul 19, 2007

• #3

If that hole is from corrosion...you'd do well to dig it out and replace as much as possible.
If it's from an impact, you could snap a small section out and replace it with a piece of 4" PVC and no hub clamps.

 

Last edited: Jul 19, 2007

BAPlumber

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• Jul 19, 2007

• #4

dig it out, cut out a 12-18" section, replace with ABS or PVC using fernco couplers. cut the cast with snap cutters or angle grinder.

Brent

Crap, Grumpy got there before me

 

GrumpyPlumber

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• Jul 19, 2007

• #5

BAPlumber said:

dig it out, cut out a 12-18" section, replace with ABS or PVC using fernco couplers. cut the cast with snap cutters or angle grinder.

Brent

Crap, Grumpy got there before me

Click to expand...

Naaah...you threw in the grinder.

 

hj

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• Jul 20, 2007

• #6

hole

That looks like internal corrosion, and if so, 12" or 18" might not be enough pipe to remove before you find a good section. Use a snap cutter, because it will crush the pipe if it is weakened by corrosion.

 

Markts30

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• Jul 20, 2007

• #7

It was probably hit by a digging tool (pick etc)...
Cut out a section as described above and replace with some plastic...
You can use the rubber ferncos as it is underground...

 

Molo

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• Jul 20, 2007

• #8

Is that the new ultra-white line of plumbing shoes?

Just joking,
Molo

 

Verdeboy

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• Jul 20, 2007

• #9

Well, only 1 rental company in town even has a chain snap cutter and they said it is out of commission indefinitely until they can repair it. I don't have a face shield, so I don't want to try using a grinder.

I will use a PC epoxy to patch the hole and then take Rugged's advice from another forum:

Author: Dunbar (KY)
Determine the size of piping, go and buy a rubber fernco of that same size.
Take a utility knife and cut a vertical cut in boot so that it will open up.
Then wrap around pipe, with the leak directly centered in the fernco.
Then slip bands back over their regular spots on each end of boot and tighten up.This will buy you a great deal of time on this matter.