Removing water from P trap/drain

[moobiker]

Hi,

I'm remodeling an upstairs bathroom, have demo'd the old (concrete) tub/shower and am preparing to install a jetted tub and freestanding shower, either Kerdi, Wedi or maybe Tile-Redi pan. I have to move and extend the existing shower bath drain, and I’m concerned about causing a flood to the 1st floor when I cut the connection to the P trap, with the water that is now standing in the drain. Can anyone tell me how much water I can expect to drain out, and does anyone have any tricks/tips for removing the standing water?

Mike

[prashster]

It's not that much. A few cupfuls (assuming it's a 2" pipe").

Try a turkey baster.

Or stuff a coiled hand towel down the drain.

[jdkimes]

Tape a pipe or tube to a wet vac and suck it out...with the vacuum.

[moobiker]

All good ideas, thanks - and sorry again for being a noob and accidentally double posting

[jadnashua]

The trap is normally a U about 4-6" across at the top, so you can figure the volume.

[Lakee911]

Tape a pipe or tube to a wet vac and suck it out...with the vacuum.

Thanks for the clarification ... I was wondering what the wetvac was for if I was gonna suck on it

Jason