I am installing a new Shower/Sink in a 2nd floor bathroom. I am not familiar with plumbing code (I am more of a fixitup guy) and wanted to know if the plumbing that existed when I tore up the floor is to code, and if my new layout will create problems. Would it be easiest to take pictures and post those or try to explain the situation?

Mike

Hi Mike,

"Would it be easiest to take pictures and post those or try to explain the situation?"

Try explaining first. If I develop a "brain lock" you can always add pictures.

The lavatory drain first. Is it vented through the roof? The lavatory vent connects to the toilets drain, right?
Does the tub/shower drain line connect into the lavatory drain where the lavs vent will wet vent it? If you can answer yes to those question then you don't have to change a thing. Cheers, Tom

The lavatory drain is not vented through the roof, it only connects to the same drain as the toilet (4" iron) which is connected to the stack. The tub/shower drain lines connect to the lavatory drain, (which again connects to the 4" toilet drain). The only vent is the main stack which is down the line from all of the fixtures. Sounds like I'll be adding a roof vent eh? Once we get this figured out I'd like to run by my new setup, to see if drainage will be OK.

Mike

One more thing, sorry to add this in here, but you seem so helpful :)

All of the drainage in this system is iron or other forms of metal (that apparently have been bent or shaped on corners. I obviously want to replace as much of the system as possible with PVC and wanted to know what would be easiest for starting my PVC. Should I cut the Iron and use the neoprene couplings, or try to remove the iron pipe at a joint and put in a male 3" PVC pipe with some type of "O" ring. The plumbing in the area is all very close together and the iron joints are all directly next to each other (no great spots to cut through a piece of pipe, only couplings).