supply lines in new bathroom

[amp]

i'm doing some planning and design work for a new bathroom and was curious about the distance the supply lines should be apart as they come through the floor. Does it just depend on the sink you bought? It's a sink on top of a closed vanity so where and how the supply lines poke through don't really seem to make any difference to me at first glance. I say this only because of the flex line I'll connect to it once i connect the sink. any thoughts? i suppose the rules would change if it was a pedestal sink. I ask all this because it would be nice to start the project before I actually have the sink in hand. Thanks folks!
also, as the supply lines come through the floor...should they really come through the floor as close as possible to the wall or should they go directly through the stud that's flat on the floor (bottom plate of new wall).

[foredeck1]

I am in the process of remodeling a bathroom as well. I am installing pedestal sinks, and the manufacturer recommends that the lines be 4" apart from each other. When doing an enclosed cabinet, it really doesn't matter, since it is going to be covered anyway, but if you are doing the lines from scratch, it might make sense to put them as close as possible in case some time in the future you or the next owner of your home would like to do a pedestal in the same place. Keep in mind that if you care to plan it out this way, the drain needs to be between the supply lines.

Check with local codes on where to run the supply lines. From a cosmetic standpoint, I would suggest running them through the bottom plate and inside of the new wall, then put a 90 degree angle on it and bring it into the room. This way, all that will be visible in the cabinet is the shutoffs, and to install the cabinet, you will just have to drill three holes into the back of it (two for the supply lines, one for the drain). I can't imagine what the installation would be like if the lines were coming through the floor of the room. - A thought - if the wall is exterior, take climatic conditions into account (it would not be fun to have your new sink lines freeze and burst)

Good Luck ;)

[amp]

that's my exact situation! I don't have a lot of room in this new 1/2 bath footprint so one of the fixtures (either the toilet or sink) will be on an exterior wall. It will probably be the toilet. That's a bonus now that i think about it...only one supply line. either way the threat of freezing pipes is a real one. do i try to run them through the floor or in the wall now? any thoughts on the best way to do this? thanks again!

[DUNBAR PLUMBER]

Inspectors will frown on water lines too closely together but it poses no harm unless they are touching. It is a rule to keep at least 4" between them so that you can install valves, use scussions where they penetrate a wall or cabinet. On pedestals they need to be uniform for appearance reasons.