Hey couple questions on this plumbing
Is the sanitary Tee and Wye being used properly on the combination drain?
Both sinks are on outside walls where I would like to use a an AAV, this is on a septic system by the way ( do not know if that matters )
There is a 4" "Cleanout" outside with a cap on it on the ground should that be used as a vent? Figured not since it was on the ground.
What packing should I be using for where those rags are on the cast iron?
That cast iron main appears to be 4 1/2"
I began installing a vent as per code for my laundry piping so it has began but I do not have these other sinks or shower added to this vent.
Everything is draining at this time. Just wondering about all of this because trying to not siphon these traps; and allow for good drainage for the future.
If there is a better way to do this please let me know as I am obviously not a plumber. Thank you.