desithebuilder
New Member
I am adding a bathroom to the attic and have been working with the plans to get the plumbing done. Below I have attached a sketch showing the fixtures. The existing main stack of the 2 floors below is right below the toilet, but I can not add a 3" main stack there as there is no room. I have to open the floor right next to the chimney enclosure and box it out, so the 3" main stack will be almost 6ft away from the toilet. The toilet will be vented with a wye combo going back and connecting with the shower vent pipe. The shower will connect with the horizontal 3" pipe with a combo wye. A combo wye will be used to went the shower. I am not sure if the shower vent pipe can run horizontally for 3-4 ft before the vertical run. The lavatory will connect to the 3" pipe with a 2" x 3" x 3" combo wye with a 2x3 reducer. The 3" horizontal stack will connect to the vertical main stack with a 3x3x2 SanTee, with a vent pipe running vertical, then horizontal to the right and then diving down due to roof slope and connecting with all other vent pipes to the existing vent going thru the roof. The joist run horizontally to the plans.
Can anyone see anything wrong with this layout? Any suggestion on how to make it better?
Can anyone see anything wrong with this layout? Any suggestion on how to make it better?