Shower drain vent advice

[azkevman]

I am doing my first major remodel and moving and enlarging my shower. I thought I was done with the plumbing but then happened upon a thread discussing how a vent cannot run horizontal under the floor. This is currently how I have it plumbed to hit an existing vent up through the roof. Looking for some expert advice to get it right before I have it inspected.
The new shower area is surrounded on 3 sides by vents, but I was planning on utilizing what was previously the washer drain vent for the shower drain. The problem is my drain line runs down to the 1st level basically in the middle of the room, so hitting a vent on the way to the drain line seems hard.
When I submitted my plans to the city I showed running a vent line opposite the drain line to hit the vent and they approved the permit, so I thought I was good to go...

I did get some feedback on another forum that I need to replace the sani-tee with a wye and 45 to tie the vent in with the drain line, so I will be doing that soon, assuming I stick with this configuration.

 

[frodo]

......................

 

[Matt30]

Where's the basin? Why couldn't you wet vent?

 

[azkevman]

Where's the basin? Why couldn't you wet vent?

From where I was standing to take the first picture, the basin is about 5 feet to my right...opposite direction from this side of the room.just to the right on the wall with the shower valves is the washer drain, but I don't believe I can wet vent with a washer drain?

 

[azkevman]

Ok, how's this...I have changed out the San tee with a wye and 45, and then used double 45's off the trap. Problem now is I've lost my slope on my vent. I do need to move the wye and trap downstream about 6" now so that will give some slope back, but I'm worried it won't be enough. Would I be better off tying into the vent on the left? That is the vent from the kitchen sink on the 1st level.

 

[frodo]

that looks a lot better. but....why the 2, 45's before the p-trap?

that p-trap swings?


nice job