few questions about vent. I am in MA:
1. I want to add a vent in my horizontal counter sink drain. Can I use tee to branch a vertical vent or I have to use wye + 45?
2. vent will go up but can i start up but immediately go horizontal few inches and then go up?
3. can I horizontally U turn (the bottom of the U is more than 1 foot) the vent and then go up?
4. Is there any limitation on horizontal length of a vent? can run a vent 20 feet horizontally and then go up again?
5. what's the vent pipe size requirment? 1.5" for bath (what I have now)? 2" for others, 3" or 4" for main stack and entire house?
6. one 2" vent can serve how many fixtures?
7. when add a vent to my 7 feet long counter sink drain, can I add it anywhere less than 5 feet from the sink side or I have to add it immediately after the p-trap?
thanks,
1. I want to add a vent in my horizontal counter sink drain. Can I use tee to branch a vertical vent or I have to use wye + 45?
2. vent will go up but can i start up but immediately go horizontal few inches and then go up?
3. can I horizontally U turn (the bottom of the U is more than 1 foot) the vent and then go up?
4. Is there any limitation on horizontal length of a vent? can run a vent 20 feet horizontally and then go up again?
5. what's the vent pipe size requirment? 1.5" for bath (what I have now)? 2" for others, 3" or 4" for main stack and entire house?
6. one 2" vent can serve how many fixtures?
7. when add a vent to my 7 feet long counter sink drain, can I add it anywhere less than 5 feet from the sink side or I have to add it immediately after the p-trap?
thanks,