Re: From commercial toliet to residential
Measure from the wall to the bolts holding the toilet to the floor. This is the "rough-in" measurement; standard rough-ins are 10", 12", and 14". 12" is most common; the others will be special order. Note that "rough-in" is the distance from the wall framing to the center of the toilet flange, so as long as the distance you measure is greater than 1/2" less than the standard sizes (allowing for thickness of the wall board), they'll work. For example, if you measure 11-1/2", a 12" rough-in will work. But if you measure only 11", you'll probably have to use a 10" rough-in toilet. There's no problem with having the tank sit out a few inches from the wall, except for appearance.
As for the supply lines, any guesses as to how it's installed will probably be wrong. Someone will need to look at the situation before recommending a course of action.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.