rickz
New Member
I’m stumped trying to figure out the best way to vent the new drains in my master bathroom remodel.
Background:
8” joists are freshly sistered. New shower, tub and vanity means some plumbing layout changes.
The tub and shower drain placements are pretty much in the same place as original and drains will parallel the joists to a consolidated drain pipe on one side of the room in a drop box under the joists that eventually heads down.
The old bathroom had most of the venting laid out horizontal above the floor to the nearest walls. The new layout requires them to be under the floor.
I’m thinking the best way to vent the shower and tub is to take 1.5” vents off the 2” drains with a wye 2 feet or so after the p-trap, but I’m afraid the trap slope will not give me enough vent rise to the wall since I have to go at least 6 feet with the vent, and 10+ feet in the other direction with the horizontal vent before i can go up.
1. Is this a suitable option?
2. Am I better to have a shorter trap to lessen the horizontal vent run?
3. Does it matter if the initial vent wye isn’t rotated up very much? There’s not much headroom to work with while maintaining correct upward vent slope and downward drain slope.
4. other comments? (this is my first post here).
note that in the picture of the new pipes I've not yet cut or included all the pieces...
Background:
8” joists are freshly sistered. New shower, tub and vanity means some plumbing layout changes.
The tub and shower drain placements are pretty much in the same place as original and drains will parallel the joists to a consolidated drain pipe on one side of the room in a drop box under the joists that eventually heads down.
The old bathroom had most of the venting laid out horizontal above the floor to the nearest walls. The new layout requires them to be under the floor.
I’m thinking the best way to vent the shower and tub is to take 1.5” vents off the 2” drains with a wye 2 feet or so after the p-trap, but I’m afraid the trap slope will not give me enough vent rise to the wall since I have to go at least 6 feet with the vent, and 10+ feet in the other direction with the horizontal vent before i can go up.
1. Is this a suitable option?
2. Am I better to have a shorter trap to lessen the horizontal vent run?
3. Does it matter if the initial vent wye isn’t rotated up very much? There’s not much headroom to work with while maintaining correct upward vent slope and downward drain slope.
4. other comments? (this is my first post here).
note that in the picture of the new pipes I've not yet cut or included all the pieces...