![plumbing - Why do I have extra copper tubing connected to each bathroom sink supply line? - Home Improvement Stack Exchange plumbing - Why do I have extra copper tubing connected to each bathroom sink supply line? - Home Improvement Stack Exchange](https://i.imgur.com/COuaWJK.jpg)
plumbing - Why do I have extra copper tubing connected to each bathroom sink supply line? - Home Improvement Stack Exchange
Sink drain into toilet drain right under the flange? | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
![2nd floor drainage questions 1) what is max distance toilet pipe can drop to closet arm (4 to 3” arm)? 2) is it better to tie in shower / sink drain to 2nd floor drainage questions 1) what is max distance toilet pipe can drop to closet arm (4 to 3” arm)? 2) is it better to tie in shower / sink drain to](https://i.redd.it/2jmjamqz1nf81.jpg)
2nd floor drainage questions 1) what is max distance toilet pipe can drop to closet arm (4 to 3” arm)? 2) is it better to tie in shower / sink drain to
![bathroom - Can a sink drain connect to toilet drain before toilet vent? - Home Improvement Stack Exchange bathroom - Can a sink drain connect to toilet drain before toilet vent? - Home Improvement Stack Exchange](https://i.stack.imgur.com/lfRtT.jpg)