Cracked vertical waste line
I own a four family house, one tenant notice a leak. I went to the property and removed the drywall , to my surprise the vertical waste ( cast iron )was cracked from the bottom entering the hub to the top just below the hub. Here is my problem , 1st what do I use to support the above hub it has a couple branches connected ? 2) can I use a no hub band to connect the hub to pvc at the top? 3) can I just sleeve the pvc into the hub below or do I need a special connector?
Thank you
Dave