new bathroom drains

[diyjoe]

I'm planning to add a first floor bathroom and have a couple questions:
1. What is the best way to tie into an underground cast iron drain pipe (I'm planning on using PVC)?
2. What are the maximum distances to the main stack from a toilet, sink and bathtub for a 3" main stack?

[DUNBAR PLUMBER]

I'm planning to add a first floor bathroom and have a couple questions:
1. What is the best way to tie into an underground cast iron drain pipe (I'm planning on using PVC)?

Use the rubber ferncos that are sized similar to the piping you are connecting to.



2. What are the maximum distances to the main stack from a toilet, sink and bathtub for a 3" main stack?


6 foot on the toilet, the other two can go up 42" and branch together and tie into the stack @42" if there is not another bath group above it.