Can someone please explain wavin pipe to me ?

GreatOaktree

hi all we recently had a septic tank installed at an old stone house we are renovating. We're a young couple doing as much of the job as possible. We've been using a compost toilet for the past two summers so being so close to having a flush toilet is driving us mad. I have a few question regarding where to go from here.

1. Should I plumb my grey water to my tank ? is it on the same pipe as sewerage ?
2. Do I need an ajay for each toilet ?
3. How do i connect my toilets to the wavin ?
4. Do i need a Ventilation pipe going above my roof for each toilet ?
5. How do I connect the ventilation pipe to the wavin ? is the vent pipe just wavin too and do I join them at an ajay ?

Calahonda52

This would flush out better answers over in Plumbing: maybe some kind soul will move it over

GreatOaktree wrote: »

hi all we recently had a septic tank installed at an old stone house we are renovating. We're a young couple doing as much of the job as possible. We've been using a compost toilet for the past two summers so being so close to having a flush toilet is driving us mad. I have a few question regarding where to go from here.

1. Should I plumb my grey water to my tank ? is it on the same pipe as sewerage ?
2. Do I need an ajay for each toilet ?
3. How do i connect my toilets to the wavin ?
4. Do i need a Ventilation pipe going above my roof for each toilet ?
5. How do I connect the ventilation pipe to the wavin ? is the vent pipe just wavin too and do I join them at an ajay ?

Re 1, I don't know

Re 2, depending on whether it is through the wall or into the floor, you will usually use a multiwick in some shape or form: they are flexible and give some scope for small errors in alignment. http://www.raygrahams.com/category/4005-multiwick-bends.aspx
Re three: they must be vented, let me explain why:
if not then the flush down will suck the air out of the toilet pan/trap and let deadly fumes back into house.
depending on the layout of toilets in the house the easiest way is to do each one separately, so to avoid confusion lets do it that way
Re 4, yes vent pipe is same as wavin, orange in ground, black or grey over ground, however the connection is not from AJ, as it needs to be connected to the wavin from the toilet, let me get a link
http://www.boards.ie/vbulletin/showthread.php?p=96698588

look at the picture in post 1

describe the house a bit more and toilet locations if u can

GreatOaktree

Thanks for the reply, it is a one story extension and everything is on a straight line, what is a multipack ? I cant seem to find an image, and what is a gavin ?

Calahonda52

GreatOaktree wrote: »

Thanks for the reply, it is a one story extension and everything is on a straight line, what is a multipack ? I cant seem to find an image, and what is a gavin ?

Sorry for 2 typos, couldn't see in the sun while driving:D
Link added and spelling corrected.
Any chance of a picture or two

did the pic in other link make sense

dathi

http://www.environ.ie/en/Publications/DevelopmentandHousing/BuildingStandards/FileDownLoad,24906,en.pdf
relevant building regulations