I am building a bathroom on concrete slab, size 8' x 10'
1 Toilet
2 Sink
1 Shower
Sinks are 2" coming up through the sill plate for connection for drain and vent to continue up to the attic.
Toilet is 3" with 2" vent coming up through the sill plate for vent connection
Shower is 2" drain with a 2" vent coming up through the sill plate.
Now for the question. (whew!!)
I need to take all of the vent lines into the attic space and connect them together then penetrate the roof with vent pipe.
Q: What size ABS should I use for the vent pipe in the walls going into the attic space
Q: According to local code (WA) the vent has to be the same size or larger as the main drain leaving the structure which is 3". Should I put in a single 3" through the roof and connect all the vent lines to this 3" penetration
Q: any advice on proper fittings to connect the vent lines to the 3" penetration and supporting that assembly would be appreciated.
1 Toilet
2 Sink
1 Shower
Sinks are 2" coming up through the sill plate for connection for drain and vent to continue up to the attic.
Toilet is 3" with 2" vent coming up through the sill plate for vent connection
Shower is 2" drain with a 2" vent coming up through the sill plate.
Now for the question. (whew!!)
I need to take all of the vent lines into the attic space and connect them together then penetrate the roof with vent pipe.
Q: What size ABS should I use for the vent pipe in the walls going into the attic space
Q: According to local code (WA) the vent has to be the same size or larger as the main drain leaving the structure which is 3". Should I put in a single 3" through the roof and connect all the vent lines to this 3" penetration
Q: any advice on proper fittings to connect the vent lines to the 3" penetration and supporting that assembly would be appreciated.