This is my first attempt ever at installing underground pipes for a full bath in the basement and i don’t think it was done properly, but i’d like to know if:
Is the shower (far right 2" pipe) properly vented? Am i correct to assume that the shower is properly vented because the sink drain is between the toilet and the shower?
If the shower trap looks good? Or did i create an s-trap?
When I pour the 4" of concrete in the shower area to close it, whats the best way to do it? the concern is that the majority of the trap would be concreted and enveloped in that area. is this method okay or is there an alternative way?
So from left to right it is sink, toilet, and shower. the sink will drain into the main stack. the main stack then goes down under the concrete and sweeps to the right and connects to the 3" toilet drain approx 1 foot to the right of where toilet flange would be. This would vent the toilet and the shower. The toilet drain then continues to the right and then the shower p trap appears and drains into the 3" drain that originates from the toilet drain. The distance from the shower drain to what I presume is the vent is approx 4 feet. The graph paper diagram shows it better.
Thanks in advance.