Drain waste vent system

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3
votes
1answer
664 views

Can I use a 1 1/2 vent for a toilet (3" drain) in CA (not a went vent, no other fixtures on it)?

Most of the info I have on code implies this would be OK, but one item I have says that a 1 1/2 vent can only serve 8 "non-WC" fixture units.
8
votes
2answers
9k views

How do I install a sink in a room that doesn't have a drain vent?

I want to install a sink in my attached garage where there is no existing plumbing. I will be running new water supply and drain pipes to mains behind a nearby wall. I'm concerned I will need a ...
4
votes
5answers
23k views

What is the best quick repair for a drain pipe?

In particular, a cast iron drain pipe. It doesn't have to be pretty, but needs to be effective and should last until it can be fixed properly.