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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
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
Most of the time it is 4 inch.
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"