hi all.
On 22nd floor of 29 story building.
15 year old building
Plumbing was done hap hazardly to say the least. Emerging Market Stuff.
I am trying to remediate two vent problems which are both above me and below me.
Both relate to Vent lines serving a Lav and a WC with Drops and Sags (major Like 1.5 feet).
Also the Wyes into the WC Vent are backwards facing downstream...
Every apt in this zone that i have been able to access has this bad venting or some variation of it....
Four files attached
2 "schemes of what is really there"
2 "bathroom blue print plans" dont pay too much attention to those (backward fittings etc.
they are not really accurate and also dont plan the WC vent which is very much wrongly there with a backwards wye to boot (I flipped the wye in my my schematic).
So these saggy vent pipes are being ejected with poop from a backwacks wye to boot!
Both bathrooms have the same problem of Vents lines (of 22F lav connect to 23F WC) with a major major drop of some 1.5 feet.
***Key questions
1) because soil pipe is a dedicated soil pipe and has auxiliary and relief vents on the way up and down, do i even need these drains to be vented (????) or will the Soil Pipe Stack provide enough relief to move the packages provided there is enough (but not too much) slope? and confirming the aux vents.
If every other apt is also plumbed like this I know the vents are already a mess.
***2) Do the building vent stacks need to be replaced if they are literally full of it?
Kids bathroom
Cant be vented from within 2 feet of the as ideal trap there is too much concrete in the way.
Would require either moving the toilet in all 29 apartments or...
...some how running a vent through the floor cutting through a 12 inch slab and redoing 29 showers.
It's just a stupid design on the bathroom.
***3) At point *** in the "kids bathroom Scheme" which is 7.8 feet from the bottom of the 90 degree Bend (that is the trap weir correct?) it might be possible to run a rising horizontal slab with a wye rolled to 45 with a quarter turn to run its straight to the vent. Maybe....
Master vent can be re-piped, if advisable, but it will be invasive and i would want to do it as far from the trap weir as I could in order to make it easy to put in the combination Y-1/8 and then turn it another 45 to hit the Vent Stack. \
***4) Do I need to vent that WC - dedicated soil pipe as it goes into a dedicated waste line. If yes can i stretch it out to say 8-9.5 feet around the corner to make it easier to get a rising tie in to the Vent?
Any thoughts, code support and practical experience appreciated.
Going to be a major job dealing with cutting out all the ceiling boards and Stack cut ins etc...
I have pictures...if anyone really wants... but its a mess up there pipes going everywhere....
From Thailand....
Thanks
View attachment 11187View attachment 11188
On 22nd floor of 29 story building.
15 year old building
Plumbing was done hap hazardly to say the least. Emerging Market Stuff.
I am trying to remediate two vent problems which are both above me and below me.
Both relate to Vent lines serving a Lav and a WC with Drops and Sags (major Like 1.5 feet).
Also the Wyes into the WC Vent are backwards facing downstream...
Every apt in this zone that i have been able to access has this bad venting or some variation of it....
Four files attached
2 "schemes of what is really there"
2 "bathroom blue print plans" dont pay too much attention to those (backward fittings etc.
they are not really accurate and also dont plan the WC vent which is very much wrongly there with a backwards wye to boot (I flipped the wye in my my schematic).
So these saggy vent pipes are being ejected with poop from a backwacks wye to boot!
Both bathrooms have the same problem of Vents lines (of 22F lav connect to 23F WC) with a major major drop of some 1.5 feet.
***Key questions
1) because soil pipe is a dedicated soil pipe and has auxiliary and relief vents on the way up and down, do i even need these drains to be vented (????) or will the Soil Pipe Stack provide enough relief to move the packages provided there is enough (but not too much) slope? and confirming the aux vents.
If every other apt is also plumbed like this I know the vents are already a mess.
***2) Do the building vent stacks need to be replaced if they are literally full of it?
Kids bathroom
Cant be vented from within 2 feet of the as ideal trap there is too much concrete in the way.
Would require either moving the toilet in all 29 apartments or...
...some how running a vent through the floor cutting through a 12 inch slab and redoing 29 showers.
It's just a stupid design on the bathroom.
***3) At point *** in the "kids bathroom Scheme" which is 7.8 feet from the bottom of the 90 degree Bend (that is the trap weir correct?) it might be possible to run a rising horizontal slab with a wye rolled to 45 with a quarter turn to run its straight to the vent. Maybe....
Master vent can be re-piped, if advisable, but it will be invasive and i would want to do it as far from the trap weir as I could in order to make it easy to put in the combination Y-1/8 and then turn it another 45 to hit the Vent Stack. \
***4) Do I need to vent that WC - dedicated soil pipe as it goes into a dedicated waste line. If yes can i stretch it out to say 8-9.5 feet around the corner to make it easier to get a rising tie in to the Vent?
Any thoughts, code support and practical experience appreciated.
Going to be a major job dealing with cutting out all the ceiling boards and Stack cut ins etc...
I have pictures...if anyone really wants... but its a mess up there pipes going everywhere....
From Thailand....
Thanks
View attachment 11187View attachment 11188