[limiteddi]

We are finishing our patio in a new build and wanted to install a small outside kitchen with a sink. The closest drain is the drain stack from the second floor. I ran a 2" PVC pipe at 5% slope and I'm at a point where I need to drill into my foundation. My friend who is a licensed plumber was supposed to come by and assist but couldn't make it because of some emergency calls.

At this point, I have 2 grey areas:
I am aware that having a lot of 90s is not recommended but this sink won't be used often so I can try and dig a bit more and install 45s(in red) instead of 90s.
What would be the easiest way to cut my 2" PVC into the 4" drain?

Cheers

 

[dj3]

- Connecting to the main stack is one thing (you can find videos on youtube).
- Venting this drain is another.

 

[Ghostmaker]

Make sure you pull your plumbing permits. Inspectors love tearing out concrete to see piping.

 

[SeniorSitizen]

You do realize there are differences in 90s? The plumbing industry could do the public a favor and make drain 90's so only long radius 90's could be used for drains but i have my doubts that'll ever happen.