Great forum - thanks for providing it!
I am remodeling a kitchen, and adding an island with a sink. Half the room is over a fairly short crawlspace, the other half is slab. The island straddles the two, with the sink in the middle but mostly over the slab side. I'm in VA, so IPC, so I could use an AAV, but would prefer to use an island vent if I can.
There are two main challenges:
1) the 2x8 joists sit on top of a block wall in the crawl (and are too small to put big holes in, I think) and the vent and drain both need to run perpendicular to the joists (not in the joist space). So I need to go under the joists, but there isn't a ton of space vertically for the 1/4" slope up/down.
2) the sink cabinet is sitting basically on the slab, I'd like to avoid cutting the slab and block wall if I can, but want to get the sink as far on the slab side as possible to allow for walkways around the island.
I'm thinking about adding 45's to both the drain and the vent loop, maybe inside the cabinet. I'm pretty sure this is ok, but would like advice.
Then, ideally, I'd like to add a second 45 to each line below the foot vent combo/above the lower drain/return combo fitting. This results in both of the 2" combos for the drain laying on their side. Below is a maybe the world's worst sketch of the situation (with a view from the end, kinda), along with the standard island vent picture showing where I'd like to put the 45s.
Laying the lower combos on their side feels wrong, but I can't put a finger on what code it would violate. Thoughts?
-Matt
I am remodeling a kitchen, and adding an island with a sink. Half the room is over a fairly short crawlspace, the other half is slab. The island straddles the two, with the sink in the middle but mostly over the slab side. I'm in VA, so IPC, so I could use an AAV, but would prefer to use an island vent if I can.
There are two main challenges:
1) the 2x8 joists sit on top of a block wall in the crawl (and are too small to put big holes in, I think) and the vent and drain both need to run perpendicular to the joists (not in the joist space). So I need to go under the joists, but there isn't a ton of space vertically for the 1/4" slope up/down.
2) the sink cabinet is sitting basically on the slab, I'd like to avoid cutting the slab and block wall if I can, but want to get the sink as far on the slab side as possible to allow for walkways around the island.
I'm thinking about adding 45's to both the drain and the vent loop, maybe inside the cabinet. I'm pretty sure this is ok, but would like advice.
Then, ideally, I'd like to add a second 45 to each line below the foot vent combo/above the lower drain/return combo fitting. This results in both of the 2" combos for the drain laying on their side. Below is a maybe the world's worst sketch of the situation (with a view from the end, kinda), along with the standard island vent picture showing where I'd like to put the 45s.
Laying the lower combos on their side feels wrong, but I can't put a finger on what code it would violate. Thoughts?
-Matt