Ms. Ptrap&Claptrap
New Member
I'd like to install a two-piece courtesy lavatory on the main floor of my one-story. I'm guessing it'll only get used a dozen times a year but my house was built in 1890 with one large bathroom off the kitchen and I know the location bothers some visitors. (I live alone and my best friend didn't even have a door on her bathroom for four years due to a construction error so it's really not a big issue for me or regular visitors!)
The problem is the sewer line disappears into the rear-most exterior wall in the basement. (Photo attached) Concensus is the sewer likely goes around the exterior of the building - I have the entire original lot and the original house so, unlike my severed neighbours in new construction, there was never any need to relocate it.
I do have a laundry in the basement and the grey water makes a fanciful 40 foot journey from the laundry tub around a corner where it discharges into a small, below-grade concrete cistern and then is sent back up via sump to the rafters, back around the corner and into the sewer pipe located directly behind the washer. (Government plumbing?!)
I'm not at all opposed to hiring a licensed plumber - I actually had one in a few weeks ago to install a new vanity and was going to ask him to quote but the vanity ended up noticably off-centre to the mirror and light bar and not level. (His response was he "wished I'd mentioned it sooner". ) The next one I contacted for a rough-in price didn't like the sound of no basement floor access and started quoting on a pit and a sewage ejector. (This was over the phone. He hadn't seen anything.) When I mentioned that I was rather hoping to use a conventional waste drain and vent, or perhaps install a macerating unit rather than cut up the floor, he said he wouldn't even consider installing an above ground unit.
Now I'm feeling a bit ornery and think I might like to do all the grunt work myself and just hire someone for the technical bits.
I think the correct slope is achievable from the location where I want to place the toilet. It's nearly 30 feet away and there is one corner involved. I come up with 7.5 inch drop but then I think there's a penalty of a couple of inches for the corner? The existing PVC connection is way too high for the required slope and the lower copper outlet is too small, so any slope depends on a pro being able to open the lower discharge to the required size for a toilet, or tap into the pipe at a differnt point.
If I go with a macerator I think the lower connection is the correct size, but is it actually permissable to add a wye so that the grey water and the sewage enter the sewer at the same point? (I was also wondering if anyone knows if a Sanipak - which I realize is for horizontal discharge units - can be piped to work with a gravity toilet? They are much cheaper and if I could install one in the rafters under a conventional w/c with an elbow that would save a considerable expense, but I don't now if the different water behaviour would create flow problems for the Sanipak unit.)
I really don't want to ask another plumber ANYTHING until I have a pretty good idea of what's feasible, given that my first two forays into professional assistance didn't go too well. Any thoughts as to whether my slope calculations are close, or if it's looking like a huge job to get into the sewage pipe, or if it's just not technically possible withour an ejector would be appreciated.
Apologies if I sound like an idiot - I don't FEEL like an idiot...Probably the cause of 90% of my problems !
Rachel
The problem is the sewer line disappears into the rear-most exterior wall in the basement. (Photo attached) Concensus is the sewer likely goes around the exterior of the building - I have the entire original lot and the original house so, unlike my severed neighbours in new construction, there was never any need to relocate it.
I do have a laundry in the basement and the grey water makes a fanciful 40 foot journey from the laundry tub around a corner where it discharges into a small, below-grade concrete cistern and then is sent back up via sump to the rafters, back around the corner and into the sewer pipe located directly behind the washer. (Government plumbing?!)
I'm not at all opposed to hiring a licensed plumber - I actually had one in a few weeks ago to install a new vanity and was going to ask him to quote but the vanity ended up noticably off-centre to the mirror and light bar and not level. (His response was he "wished I'd mentioned it sooner". ) The next one I contacted for a rough-in price didn't like the sound of no basement floor access and started quoting on a pit and a sewage ejector. (This was over the phone. He hadn't seen anything.) When I mentioned that I was rather hoping to use a conventional waste drain and vent, or perhaps install a macerating unit rather than cut up the floor, he said he wouldn't even consider installing an above ground unit.
Now I'm feeling a bit ornery and think I might like to do all the grunt work myself and just hire someone for the technical bits.
I think the correct slope is achievable from the location where I want to place the toilet. It's nearly 30 feet away and there is one corner involved. I come up with 7.5 inch drop but then I think there's a penalty of a couple of inches for the corner? The existing PVC connection is way too high for the required slope and the lower copper outlet is too small, so any slope depends on a pro being able to open the lower discharge to the required size for a toilet, or tap into the pipe at a differnt point.
If I go with a macerator I think the lower connection is the correct size, but is it actually permissable to add a wye so that the grey water and the sewage enter the sewer at the same point? (I was also wondering if anyone knows if a Sanipak - which I realize is for horizontal discharge units - can be piped to work with a gravity toilet? They are much cheaper and if I could install one in the rafters under a conventional w/c with an elbow that would save a considerable expense, but I don't now if the different water behaviour would create flow problems for the Sanipak unit.)
I really don't want to ask another plumber ANYTHING until I have a pretty good idea of what's feasible, given that my first two forays into professional assistance didn't go too well. Any thoughts as to whether my slope calculations are close, or if it's looking like a huge job to get into the sewage pipe, or if it's just not technically possible withour an ejector would be appreciated.
Apologies if I sound like an idiot - I don't FEEL like an idiot...Probably the cause of 90% of my problems !
Rachel