2"
No and yes. Amendment (not from a professional plumber!): If you were simply running the sink drain into the shower drain and if there was not a reduction in pipe size, I would think you would be able to do that. I think the reason you need a trap for the sink has to do with code that requires a trap be no more than 24" from the basin to the trap arm. That being said, the pedestal sink in my house does not have a trap until after it drains below the floor.
Depends on the mateiral you already have (PVC) Galvanized nippe and brass P trap or rough brass connectiong to the trap and then of course what size of drain basin, KS, Slop Sink
Most of the time it is 4 inch.
downstream of a closet bend within 8 ft for three inch pipe and 10 feet for 4 in pipe at least half the size of the drain... unless it is stack vented then it would be full size of the stack right
standard size for bathroom sink drain is 1-1/4 standard size for kitchen sink drain is 1-1/2
If the drain is used as a wet vent for another fixture 2". Otherwise 1.5".
2"
No and yes. Amendment (not from a professional plumber!): If you were simply running the sink drain into the shower drain and if there was not a reduction in pipe size, I would think you would be able to do that. I think the reason you need a trap for the sink has to do with code that requires a trap be no more than 24" from the basin to the trap arm. That being said, the pedestal sink in my house does not have a trap until after it drains below the floor.
Standard would be about 16.5 inches. You may have each sink be smaller if putting in a double sink.
The only issue would be the drain hole. I couldn't find a measurement of what it is. I would imagine a new sink would have a standard size hole. I do not know about an older one. I have never seen a smaller drain for a garbage disposal but that doesn't mean they are not available.
If you don't have a disposal, you can get a Tail piece, the section of drain right below the bottom of the sink that has a Y on it that is the size of the drain from the dishwasher.
a 3 inch pipe
At least 3 in. drain pipe
americanNPT pipe thread i want how much taper it has depends on the pipe size/diameter
Depends on how much is flowing into the pipe. One bathroom sink, 1 1/4"
I never use any pipe under 11/2"