What's this for???

[Mike Morgan]

Any ideas what this is for? It is under the home on the commode drain line.

Maybe the plumbers had some leftovers they wanted to get rid of??

[Jeffrey R. Pope]

Looks like a sorry attempt at an island (or high loop) vent.

And the AAV is serving what?

This system is fubar and needs some correctin'.

[Paul Pendley]

Mike,

It looks as though that pipe is in the crawl space....Did you map it out? Im curious to know what it is connected too.

Paul Pendley
Premier Property Inspections

[jeffghooper]

How far away is the nearest vent, VTR? We used to do that when we were pressure testing, and then would later connect the vents.