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To the regular posters on the site who recommended Hemp’s book… GREAT call. Outstanding reference. Here’s something that I can’t gleen from the text:
My customer wants to add a 1/2 bath on his third floor almost directly above the 2nd floor bath which we’ll be gutting to remodel. He’d like to add a pedestal/wc while we have the ceiling open below. Seems like great timing and solves the “one toilet” problem I posted about earlier.
My plumber, upon hearing the idea, suggested that it would more than double the cost of the job, b/c he’d have to run a separate waste pipe all the way down to the basement. I have to admit, I’m having trouble understanding wye (get it?:).
The run between the proposed WC and the main stack is less than 6 feet, and the customer has no problem giving up some ceiling space on the second floor remodel to allow for the drain.
Any idea what the plumber could be getting at?
Appreciate some thoughts,
Brian
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PS. The main stack is 4" or better cast iron, so I don't think it has to do with limiting the number of fixtures on the line.
Brian
*Brian, I'm far from being a plumber (I can flush a toilet however).. Would it be that he (the plumber) is concerned that the main stack is acting as a vent for the lower floor bath and now it would not "breathe" as easily with waste coming from another level above the existing bathroom. If my theory "stinks", "flush" it. Sorry for the puns but Brian started it with his 'wye' joke...Mike
*TO- BRIAN HBK&BBFROM JIMBO PTDC.ORG YOUR PLUMBER WAS RIGHT ON THE MONEY.BY ADDING FIXTURES ABOVE EXISTING BATHROOMS YOU KILL ANY FIXTURES THAT ARE STACK VENTED[DRAINS THAT ARE OVERSIZED AND SHORT RUN TO NEGATE THE NEED FOR SEPARATE VENT PIPING]BELOW THE NEW INSTALLATION.I KNOW THEY USED TO DO IT THIS WAY.JUST TRY EXPLAINING THAT TO THE PLUMBING INSPECTOR..
*Mike...I would'nt flush it, it may get "trapped". Better put it in the "disposal".
*TO- BRIAN HBK&BBFROM JIMBO PTDC.ORG YOUR PLUMBER WAS RIGHT ON THE MONEY.BY ADDING FIXTURES ABOVE EXISTING BATHROOMS YOU KILL ANY FIXTURES THAT ARE STACK VENTED[DRAINS THAT ARE OVERSIZED AND SHORT RUN TO NEGATE THE NEED FOR SEPARATE VENT PIPING]BELOW THE NEW INSTALLATION.I KNOW THEY USED TO DO IT THIS WAY.JUST TRY EXPLAINING THAT TO THE PLUMBING INSPECTOR..
*Connecting into the vent stack from above, even if it's a large one, creates what is called a wet vent. In some instances it is allowable but when you try to add a toilet you are asking for trouble. When you flush, a large slug of water (and stuff) comes barreling down the vent, pushing a wad of air which could (will) have enough pressure to blow out the contents of the fixture traps below. You could get a nasty surprise while brushing your teeth. Your plumber could investigate the possibility of reventing or back venting the lower fixtures.
*Thanks Ralph. That explanation was alot better than my lack of breathing ability post.Like I said, I just flush 'em.Mike
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To the regular posters on the site who recommended Hemp's book... GREAT call. Outstanding reference. Here's something that I can't gleen from the text:
My customer wants to add a 1/2 bath on his third floor almost directly above the 2nd floor bath which we'll be gutting to remodel. He'd like to add a pedestal/wc while we have the ceiling open below. Seems like great timing and solves the "one toilet" problem I posted about earlier.
My plumber, upon hearing the idea, suggested that it would more than double the cost of the job, b/c he'd have to run a separate waste pipe all the way down to the basement. I have to admit, I'm having trouble understanding wye (get it?:).
The run between the proposed WC and the main stack is less than 6 feet, and the customer has no problem giving up some ceiling space on the second floor remodel to allow for the drain.
Any idea what the plumber could be getting at?
Appreciate some thoughts,
Brian