Remove and Replace Lead toilet bend.

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Modulerics

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1965 Slab house. I'm remodeling my bathroom. The toilet was right next to the tub. Not even a 2 inch gap, I committed to moving the flange. Upon breaking the slab I learned the bend was encased in concrete, is lead and goes to a cast iron hub also encased in concrete. I've gotten back to the hub. I've seen Terry has cut out the lead then drilled all around and got it out. I'm thinking the same thing. Should I assume a standard 4" donut will work or wait till I get it out take measurements and order from Fernco? I know some folks will say go further back and cut the hub but I'm right up again the wall to a newly redone kitchen.

ABS or PVC?

Not really plumbing related but any reason the encase it all in concrete again or just support well w gravel fill w dirt and pack and just pour concrete as thick as the rest of the slab?
 

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Reach4

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Have you reached a cast iron hub yet? A magnet is attracted to cast iron.

While I would think sand topped with concrete, others might have a better idea.

The choice between ABS and PVC is not important. Being in NJ, PVC will be the norm. In WA, ABS is the norm.
 

Modulerics

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Have you reached a cast iron hub yet? A magnet is attracted to cast iron.

While I would think sand topped with concrete, others might have a better idea.

The choice between ABS and PVC is not important. Being in NJ, PVC will be the norm. In WA, ABS is the norm.
Yes, I put a magnet on it earlier. Just tough to see in the picture. The top of the pipe has a lead mess on it but on the right it's there. The picture w the hole in the pipe is before I got to hub, just put as an indication of what bad shape it was in. Some people told me just cut back the lead and fernco on that but in seeing Terry's posts about the donuts I believe that is the correct way.

Need to just get that lead pipe out and rebuild.

Thanks for the input on the piping and cement work. I think I'll go bed of gravel right under tip w sand and then put concrete on top
 

Modulerics

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A cast iron hub will take a rubber donut that will accept ABS or PVC pipe.

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Thanks Terry. The post where you originally posted those as well as your removal method inspired me to go this route.

Any reason not to melt the lead out with a proper p100 respirator and good ventilation vs the mechanical method you posted?
 
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