Want to finish basement with rough in from builder

[hsiddall]

Ok, so 1. Im new here (from Dekalb, Northern Illinois) 2 I have a new construction home from 3 years ago with rough in plumbing for basement bathroom. Not only do they put the bathroom right in the middle of basement but I cant quite understand the intended layout. Please help and of course here is the pic...

Toward the fron would be the shower ans toilet drains, then the vents and the sink drain in back of pic. I confused as it appears id have to build a half wall to conceal the giant vent in middle of pic. Please help. I want this planned b4 i proceed with basement finish. thanx,
harley

 

[jwwing]

Is there a chance that the plan used for your home is from a subset of the plans that the subdivision builder used? If so, you might find another house in the area that has the layout completed or you might be able to get it from the builder or the city.

 

[phishfood]

Harley, sorry I missed this when you originally posted it.

If you are still with us, I think that I have your layout figured out.
I am thinking that the vent on the left is a vent for the toilet, the main vent stack on the right is intended to also serve as the drain for the lavatory in the basement bath. You could check this by cutting the vent on the left underneath the offset fittings, and using a flashlight to watch for water while someone pours water down the toilet drain.